Corrosion resistant titanium silicide film coating glass and preparation thereof

The invention discloses anticorrosive titanium silicide (Ti5Si3) film-plated glass and a method for preparing the same. Silane and titanium tetrachloride are used as a reaction precursor; nitrogen gas is used as dilute gas and protective gas; and the reaction precursor is deposited on the surface of the glass at a temperature of between 650 and 740 DEG C to generate the Ti5Si3 film-plated glass. The prepared Ti5Si3 film-plated glass has thickness of between 200 and 300 nm, infrared reflectivity of between 85 and 93 percents and transmissivity in a visible light region of between 30 and 20 percents and is the anticorrosive titanium silicide film-plated glass with functions of light dimming, heat insulation and low radiation. Compared with the prior TiSi2 film-plated glass, the titanium silicide (Ti5Si3) film-plated glass has good corrosion resistance and wider application prospect. The preparation of the film-plated glass is carried out in a tin groove, a transition roller or the front end ...

Method for preparing composite film of silver Nano granule / titanium dioxide

Preparation method of titanium dioxide bydrophilic film blended with vanadium

一种掺钒的二氧化钛亲水薄膜的制备方法

A process for preparing the hydrophilic V-doped TiO2 film includes preparing the V-doped TiO2 sol from titanate, organic vanadium salt, ethanol, water and depressant in mole ratio of (0.9-1):(0-0.1):25:1:0.2, dipping the clean glass plate as carrier in said sol, pulling it up vertically, heat treating at 450-800 deg.C, repeating several times and annealing. Its advantages are high self-cleaning and antifog effect and wide application range.

Nanometer line bottom electrode and dielectric medium composite film capacitor and preparing method thereof

The invention discloses a nano wire bottom electrode and a dielectric compound film capacitor, wherein, a titanium silicide conductive film layer, a titanium silicide nano wire bottom electrode layer and a dielectric film layer are deposited on a substrate from the top down. The capacitor is prepared by adoption of the sol-gel method, has low requirements on equipment, and is convenient to operate and easy to realize. The dielectric compound film capacitors utilizes the high specific surface area of the titanium silicide nano wire bottom electrode, greatly increases the contact area of dielectrics and the electrode, and improves the capacitance of the film composite structure which is over three times of the capacitance of a common electrode film with the same scale.

Preparation method for nanometer barium titanate

This invention relates to a method for preparing nanometer barium titanate. The procedures comprise: preparation of precipitate of hydroxyl oxide of titanium and de-ionized water as reactants, using ethylenediamine or ethanolamine or the mixture of both as solvent, adding potassium hydroxide solution in proper concentration as crystallization accelerator under the temperature of 100-200deg.C, processing hydro-thermal reaction to obtain monodisperse nanometer barium titanate powder. This invention has advantages of: simple process, easy to be controlled, no pollution, low cost, easy to realize commercial production; product with high pureness, well crystallinity, well dispersity, narrow size distribution, easy to be controlled of the size by changing the production parameters. Said product can be used in fields of: micro-electronic device, electro-optical device, storage material, high permittivity material and air-sensitive material.

Preparation method of nanometer barium zirconate

The invention discloses a method for preparing nano barium zirconate, comprising the following steps that: the zirconic oxyhydroxide precipitation and a de-ionized water solution of barium acetate are prepared and are taken as reaction raw materials, a mixing solution of quadrol and mono ethanolamine, diethanolameine or trolamine is taken as a solvent, potassium hydrate with an appropriate concentration is added to accelerate the crystallization at a temperature of between 150 and 230 DEG C, the thermal reaction is performed on the solvent and the barium zirconate nano powder body with good dispersivity is obtained. The method has the advantages of simple process, easy control, low cost and easiness for mass production. The prepared nano powder body has good crystallinity and dispersivityand narrow grain size distribution; moreover, the grain diameter can be adjusted by changing the technological parameter. The product has wide application prospect in the fields such as a microelectronic ...

Method for preparing calcium titanate nanospheres

The invention relates to a method for preparing calcium titanate nanospheres. The method comprises the following steps of: adding a mineralizing agent, namely potassium hydroxide, into hydrothermal reaction materials, namely titanium hydroxide coprecipitate and deionized water solution of calcium nitrate; introducing solution obtained by hydrothermally decomposing glucose into a hydrothermal system to influence nucleation and control the shapes of products; and synthesizing the calcium titanate nanospheres of which the diameter is 200 to 1,000nm by hydrothermal reaction. The calcium titanate nanospheres are synthesized for the first time; the process is simple and is easy to control; the method is environment-friendly and low in cost; and the products are easy to produce.

Method for preparing porous balls of strontium titanate

Cobalt material doping with ferrous acid bismuth multi-iron and preparation method thereof

The invention discloses cobalt doping bismuth ferric material, the chemical formula of which is BicoxFe1-xO3; x is not more than 0.07 while is more than 0. The preparation method is that: oxyhydroxide precipitation of iron, bismuth and cobalt is made as the reaction material; potassium hydroxide with suitable concentration is added to promote crystallization; cobalt doping bismuth ferric powder is then obtained by hydrothermal reaction under the temperature of 120 degrees to 200 degrees. The invention dramatically enhances the magnetism of the bismuth ferric by doping cobalt; furthermore, theinvention has simple technique, has no pollution, low cost and is suitable for mass production. The cobalt doping bismuth ferric material of the invention has stable crystallization quality and has wide application prospect in the fields such as information storage, satellite communication, precise control, circuit measurement of high voltage transmission lines and magnetoelectric sensors.

Method for preparing TiN nano-powders

The invention discloses a method for preparing TiN nano-powder, which adopts a chemical vapor deposition process. A cleaned substrate is put into a vapor deposition reaction chamber; NH3 and preheated Ti source are directed to the reaction chamber by taking inert gas as carrier gas to prepare the TiN nano-powder. The method of the invention has the advantages of simple process, low production cost, continuous production, high efficiency and high yield, with the size and the shape of the particle capable of being controlled conveniently and effectively; the TiN nano-powder produced has even particles, and can be spherical, cubic and nanorod-shaped, etc.

Method for preparing similar bone bioactivity coatings medical material by galvano-chemistry method

The invention discloses bone-like bioactive coating medical material which is prepared by adopting an electrochemical method. The invention adopts an electrolytic deposition method and imitates the forming process of a natural bone. Electrolyte solution contains calcium, a phosphorous compound and bone matrix collagen, a medical metal transplant body is taken as a working electrode, platinum is taken as a reference electrode, the electrode reaction causes partial pH value of the electrolyte solution around the medical metal transplant body to ascend, thereby leading collagen to be gelatinized, in cooperation with the deposition of calcium phosphate mineral, the bone-like bioactive coating is formed on the medical metal surface. Through the adoption of the invention method, the bioactive coating acquired on the surface of the metal transplant body is similar to the natural bone in the component and the structure, and has favorable biological activity, thus the disadvantages that the biological ...

Dielectric adjustable thin film based on implantation type nano line electrode and preparation thereof

The invention discloses a dielectric adjustable film based on an implantable nano-wire electrode. Titanium silicide conductive film layer, titanium silicide conductive nano-wire layer and dielectric medium film layer are orderly deposited on a basic board from bottom to top. The film can be prepared by magnetron sputtering deposition and sol-gel method. The dielectric adjustable film based on an implantable nano-wire electrode implants silicide conductive nano-wire into the inner of the dielectric film, makes full use of the marginal electric field of the nano-wire electrode, gets a high adjustability under a very low modulating voltage and reduces the modulating voltage of the dielectric adjustable film without nano-wire electrode, which is from 1/6 to 1/10 of in the ordinary course. The dielectric adjustable film based on an implantable nano-wire electrode of the invention has good compactness, little defects and loss. The dielectric film based on an implantable nano-wire electrode is ...

Nanometer Ag particle-(Ba0.65, Sr0.35)TiO3 seepage-type composite ceramic film and preparation method thereof

The invention discloses a nanometer Ag particle-(Ba0.65, Sr0.35)TiO3 seepage-type composite ceramic film and a preparation method thereof. The ceramic film takes polycrystal perovskite phase ceramic as a substrate in which nanometer Ag particles are distributed, the polycrystal perovskite phase ceramic is (Ba0.65, Sr0.35)TiO3, and the molar ratio of nanometer Ag to (Ba0.65, Sr0.35)TiO3 is (0.2-0.6):1. The preparation method comprises the following steps of: preparing a stable Ag-(Ba, Sr)-Ti sol precursor by taking tetrabutyl titanate, barium acetate and strontium nitrate as a Ti source, a Ba source and an Sr source, taking silver nitrate as an Ag source, taking concentrated nitric acid as a stabilizing agent, taking diacetone and citric acid as a complexing agent, and taking ethylene glycol monomethyl ether and glycol as a mixed solution; then, coating on an ITO (Indium Tin Oxide)/glass substrate with a dipping and pulling method; and preparing the composite ceramic film by air atmosphere ...

Method for preparing monocrystalline CaTiO3 dendrite

The invention discloses a method for preparing a monocrystalline CaTiO3 dendrite by using a hydrothermal method. The method comprises the following steps: firstly dissolving a titanium compound in an ethanol solvent to obtain an A solution; then mixing calcium chloride dihydrate, distilled water and an ethanol solvent to obtain a B solution; and slowly and dropwisely adding the A solution into the B solution, adjusting the pH value to 10-11, stirring and mixing, placing the mixture in a hydrothermal kettle, and keeping the temperature at 180-260 DEG C for 1-36 hours to obtain the CaTiO3 dendrite. Through the method, the pure CaTiO3 dendrite is prepared by a one-step hydrothermal method by using inexpensive butyl titanate and calcium chloride dihydrate as the raw materials and water-ethanol as the solvent under low-temperature non-equilibrium conditions, the process route is simple, and the morphology of the CaTiO3 dendrite can be conveniently controlled by adjusting the process parameters ...

Method for preparing strontium titanate nanometer powder of one-dimensional structure

The invention discloses a method for preparing strontium titanate nanometer powder with one-dimension structure, which consists of procedures of preparing the oxyhydroxide precipitate of titanium and the deionized aqueous solution of barium acetate as reaction materials, adding a feasible quantity of potassium hydroxide to promote crystallization, and appending a suitable viscosity of patterned vertical alignment polymer surfactant to control the feature; under the temperature of 100-150 DEG C, strontium titanate nanowire and a branched crystal structure are obtained after a hydrothermal reaction. The craftwork of the invention is simple; the micro feature of the product is easy to control, the pollution is free; the cost is low; a large-scale production is suitable. The quality of the crystallization of the prepared product is stable; the specific surface is big. A broad application prospect is possessed in fields of micro electronic devices, EO devices, storage devices, oxygen sensors ...

Method for preparing titanium dioxide nanocrystalline with highlight catalytic activity in low-temperature

The invention discloses a method for preparing a titania nanocrystal with high photocatalytic activity at a low temperature. The method is the sol-gel method and comprises the following steps: firstly, titanium compounds are dissolved in an organic solvent, and a solution A is obtained; secondly, a water solution with a pH value between 1 and 6 is mixed with the organic solvent, and a solution B is obtained; thirdly, the solution A is slowly and dropwise dripped into the solution B, and the mixture is stirred until stable sol is formed; and fourthly, the sol is aged at a normal temperature anddried at a temperature of between 50 and 100 DEG C, and then the titania nanocrystal is prepared. The method for preparing the titania nanocrystal with high photocatalytic activity is performed at the low temperature, does not require special devices, and requires simple devices; and the nanocrystal obtained has a small particle size, has a diameter of about 5 nanometers, and has superior photocatalytic ...

A method for TiO2 nano polymerization synergistic modification and coloration of pearls

Method for preparing one-dimensional columnar structure calcium-doped lead titanate monocrystal nano-fibers

The invention relates to a method for preparing one-dimensional columnar structure calcium-doped lead titanate monocrystal nano-fibers. The method is a hydrothermal reaction method and comprises the following steps of: dissolving titanium ions in ethylene glycol monomethyl ether serving as a solvent, and precipitating the titanium ions by using ammonia water serving as a precipitator; controlling the growing direction by using polyvinyl alcohol serving as a surface modifier; and finally, promoting crystallization by using potassium hydroxide serving as a mineralizer, and synthesizing the one-dimensional columnar structure calcium-doped lead titanate monocrystal nano-fibers. The method has the advantages of simple process flow, high controllability, no pollution, low cost and suitability for mass production; and the one-dimensional columnar structure calcium-doped lead titanate monocrystal nano-fibers prepared by the method have the advantages of high purity and high dispersibility.

Polyvinylidene fluoride- acetylene black high dielectric constant composite film and preparation process thereof

The invention discloses polyvinylidene fluoride- acetylene black superdielectric composite film. It comprises components with their proportion by volume as follows: polyvinylidene fluoride with its weight average molecular weight being 4 million, 98.0- 99.0%; and acetylene black with the crystal size being 50- 100 nm, 1.0- 2.0. The method for preparing said composite film comprises: mixing acetylene black powder and polyvinylidene fluoride to produce mixing solution, producing polyvinylidene fluoride- acetylene black composite film with dipping and dragging method, heat treating at constant temperature of 60- 80 Deg. C, and getting final product. The film is characterized by excellent dielectric property, high dielectric constant (56 when it is100KHz) and ultra- low dielectric loss (less than 0.15), and good frenquency stability at low frequency. The process is easy, and is suitable for industrial production and market prospect is sound.

Seepage type wave-absorption material of barium titanate-nickel zinc ferrite composite powder and preparation method thereof

The invention discloses a seepage type wave-absorption material of barium titanate-nickel zinc ferrite composite powder, which consists of a barium titanate phase and a nickel zinc ferrite phase, wherein the content of the nickel zinc ferrite phase is 80 to 90 moles percent. The material is prepared by adopting a sol-gel in-situ forming method. The preparation process is simple; the prepared wave-absorption material of the barium titanate-nickel zinc ferrite composite powder produces a seepage effect, and has a good wave absorption performance (in a frequency range of 18 to 40GHz, the composite powdery wave-absorption material has peak value at specific frequency, and the return loss (RL) value of the material reaches from -60dB to -75dB); and the barium titanate-nickel zinc ferrite composite powder can be used for preparing a coating or mixed with other coating materials, and has wide application prospect.

Nickel doped bismuth sodium titanate multiferroics and preparation method thereof

The invention discloses a bismuth sodium titanate multiple iron material with a nickel-doping, the chemical formula of the which is Na0.5Bi0.5NixTi1-xO3, wherein x is more than 0 and less than or equal to 0.0125. The preparation method includes the stepd that the oxyhydroxide precipitation of nickel, bismuth and titanium is taken as the reaction material; the sodium hydroxide with a certain concentration is added for promoting the crystallization; a sodium hydroxide is carried out for obtaining the bismuth sodium titanate multiple iron material with a nickel-doping at the temperature of 160-200 DEG C. The obtained bismuth sodium titanate multiple iron material with a nickel-doping of the invention has ferroelectricity and ferromagnetism with simple technology process, non-pollution and a low cost, as well as an easy scale production. The bismuth sodium titanate multiple iron material with a nickel-doping has a good ferroelectricity and a better ferromagnetism, thus having an applied prospect ...

Method for improving TiN film conductivity by mixing V

Method for preparing calcium titanate nanoparticles

The invention discloses a method for preparing calcium titanate nanoparticles. The method comprises the following steps of: adding a mineralizing agent, namely potassium hydroxide, with proper concentration, into hydrothermal reaction materials, namely titanium hydroxide coprecipitate and deionized water solution of calcium nitrate; introducing solution obtained by hydrothermally decomposing glucose into a hydrothermal system to influence nucleation and control the particle size of products; and synthesizing the calcium titanate nanoparticles of which the diameter is 30 to 60nm by hydrothermal reaction. The process is simple and is easy to control; the method is environment-friendly and low in cost; and the products are easy to produce.

Method for preparing strontium titanate nanoparticles

The invention discloses a method for preparing strontium titanate nanoparticles. The method comprises the following steps of: adding a mineralizing agent, namely potassium hydroxide, with proper concentration, into hydrothermal reaction materials, namely titanium hydroxide coprecipitate and deionized water solution of strontium nitrate; introducing solution obtained by hydrothermally decomposing glucose into a hydrothermal system to influence nucleation and control the particle size of products; and synthesizing the strontium titanate nanoparticles of which the diameter is 20 to 50nm by hydrothermal reaction. The process is simple and is easy to control; the method is environment-friendly and low in cost; and the products are easy to produce.

Amorphous titanium dioxide nano dot array and preparation method thereof

The invention discloses an amorphous titanium dioxide nano dot array. The titanium dioxide of the array has an amorphous structure, the diameter of titanium dioxide nano dots is 10 to 250 nanometers, and the distribution density of the titanium dioxide nano dots is 1.0-10.0*1,010 cm<2>. A preparation method for the amorphous titanium dioxide nano dot array comprises the following steps of: dissolving titanate, water and acetylacetone into alcohol, adding polyvinylpyrrolidone into the mixture to form titanium dioxide precursor sol; and spinning the titanium dioxide precursor sol on a substrateto form a titanium dioxide precursor nano dot array sol film, and obtaining the amorphous titanium dioxide nano dot array on the substrate by ageing and hydrothermal process. The preparation method solves the problem of preparing the amorphous titanium dioxide nano dot array on the surface of the substrate; and the preparation method is simple, feasible and convenient to operate, and can be applied ...

Method for preparing lead zirconatetianate nano powder

Nanometer Ag particle-(Ba0.65, Sr0.35)TiO3 seepage-type composite ceramic film and preparation method thereof

The invention discloses a nanometer Ag particle-(Ba0.65, Sr0.35)TiO3 seepage-type composite ceramic film and a preparation method thereof. The ceramic film takes polycrystal perovskite phase ceramic as a substrate in which nanometer Ag particles are distributed, the polycrystal perovskite phase ceramic is (Ba0.65, Sr0.35)TiO3, and the molar ratio of nanometer Ag to (Ba0.65, Sr0.35)TiO3 is (0.2-0.6):1. The preparation method comprises the following steps of: preparing a stable Ag-(Ba, Sr)-Ti sol precursor by taking tetrabutyl titanate, barium acetate and strontium nitrate as a Ti source, a Ba source and an Sr source, taking silver nitrate as an Ag source, taking concentrated nitric acid as a stabilizing agent, taking diacetone and citric acid as a complexing agent, and taking ethylene glycol monomethyl ether and glycol as a mixed solution; then, coating on an ITO (Indium Tin Oxide)/glass substrate with a dipping and pulling method; and preparing the composite ceramic film by air atmosphere ...

Method for quickly preparing nano-crystal of V2O5 dried gel at low temperature

The invention discloses a method for quickly preparing a nano-crystal of a V2O5 dried gel at low temperature, which adopts a sol-gel method and comprises the following steps: 1) dissolving a vanadium compound into an organic solvent, stirring the mixture evenly to obtain solution A; 2) using acid liquor to adjust the pH value of deionized water to be less than 1, mixing the deionized water with the organic solvent, and stirring the mixture evenly to obtain solution B; and 3) dropping the solution A into the solution B dropwise, stirring the mixture continuously until stable sol is formed, aging the sol for at least 6 hours at room temperature, and then drying the sol at a temperature of between 50 and 70 DEG C. The method has the advantages of simple device, no need of special devices and high temperature conditions, good repeatability, good crystallization effect at low temperature, short preparation period and the like.

Nanometer line bottom electrode and dielectric medium composite film of capacitor and preparing method thereof

The invention discloses a nano wire bottom electrode and a dielectric compound film capacitor, wherein, a titanium silicide conductive film layer, a titanium silicide nano wire bottom electrode layer and a dielectric film layer are deposited on a substrate from the top down. The capacitor is prepared by adoption of the sol-gel method, has low requirements on equipment, and is convenient to operate and easy to realize. The dielectric compound film capacitors utilizes the high specific surface area of the titanium silicide nano wire bottom electrode, greatly increases the contact area of dielectrics and the electrode, and improves the capacitance of the film composite structure which is over three times of the capacitance of a common electrode film with the same scale.

Film for solar battery and preparation method thereof

The invention discloses a film for a solar battery. A TiO2 film and a SnO2 film are arranged on a glass substrate in sequence from bottom to top; and a chemical vapor deposition method is adopted. The film for the solar battery is provided with a SnO2 and TiO2 dual-layer compoite film system on the glass substrate, wherein a TiO2 film layer which is coated between the glass substrate and the SnO2 film in a solar battery, therefore the solar battery achieves an excellent performance of wide band and low reaction, moreover, alkaline metal ions in the glass can be blocked from diffusing and entering into a transparent conducting plate.

Method for preparing hexagonal disc shaped alpha-Fe2O3 powder

The invention relates to a preparation method of a hexagon-round disciform nanometer powder of alpha-Fe2O3. A water or solvent thermal synthesis is used for respectively dissolving an original reaction material, ferric nitrate and a mineralizer, potassium hydroxide into a mixed solvent which is composed of ethylene glycol and water; then a potassium hydroxide solution is added drop by drop into aferric nitrate solution to get a suspension liquid precursor which is used for the water or solvent thermal reaction; the suspension liquid precursor is sealed into a reactor and is processed by heattreatment for 4 hours to 36 hours at the temperature of 160 DEG C to 240 DEG C to get the hexagonal disciform nanometer powder of alpha-Fe2O3; the thickness of the powder is not more than 150 nanometers and the disk track is not less than 250 nanometers. The products of the invention have the advantages of stable quality, high purity, good particle dispersion and excellent catalyzing property; the preparation ...

Method for preparing oriented growth dielectric-constant adjustable strontium lead titanate film

Epitaxial strontium barium niobate film possessing transparent conductive lithium nickel oxide bottom electrode and its preparation method

Method for preparing silver and titanic oxide nano compound material at low temperature

The invention discloses a method for preparing a silver and titanium dioxide nano-composite at low temperature. The method comprises the following steps: (1) a titanium compound is dissolved in an organic solvent, so as to obtain an A solution; (2) the A solution is dripped into water gradually and stirred to form stable sol, so as to obtain a B solution; (3) a silver compound and diethanolameineare dissolved in the organic solvent, so as to obtain a C solution; and (4) the C solution and the B solution are mixed, aged and dried. The method has the advantages that the method is simple, needsno special device or high temperature condition, and can obtain the silver and titanium dioxide nano-composite at low temperature. In the prepared silver and titanium dioxide nano-composite, the sizeof silver particles is between 5 and 40 nanometers, and the size of titanium dioxide particles is between 4 and 6 nanometers. The composite has excellent properties in photocatalysis, deodorization and sterilization ...

Method for preparing density-adjustable TiO2 nanorod array

The invention discloses a method for preparing a density-adjustable TiO2 nanorod array. The diameter of TiO2 nanorods is 10-200 nm, and the density distribution range of the TiO2 nanorods is 9.4*10<2>/cm<-2> to 8.3*10<13>/m<-2>. The preparation method comprises the following steps of: (1) dissolving tetrabutyl titanate, water and acetylacetone into alcohol, and adding polyvinylpyrrolidone to form titanium dioxide precursor sol; (2) quickly spin-coating the titanium dioxide precursor sol on a substrate to form a titanium dioxide precursor nano lattice array sol film on the substrate, and putting the substrate into a muffle furnace for thermal treatment; and (3) putting the thermally treated substrate into a titanate and acid mixed water solution for hydro-thermal treatment to obtain the TiO2 nanorod array on the substrate. The preparation method is simple, and the surface wettability, the photocatalytic property and the photoelectric properties of the prepared TiO2 nanorod array can be controlled ...

Iron doped sodium-bismuth titanate multiferroics and method for producing the same

The invention relates to iron-doped sodium bismuth titanate multi-ferric material of which the chemical formula is: Na0.5Bi0.5FexTi<1 -x>O3, x is bigger than zero and less than or equal to 0.8. The preparing method comprises the steps: the oxyhydroxide precipitation of iron, the bismuth and the titanium are prepared as reaction materials; the sodium hydroxide of suitable concentration is added topromote crystallization; under a temperature ranging from 160 DEG C to 200 DEG C, the iron-doped sodium bismuth titanate multi-ferric material is obtained by hydrothermal reaction. The iron-doped sodium bismuth titanate multi-ferric material prepared by the invention has both ferroelectricity and ferromagnetism. Furthermore, the invention is simple in technical process, without pollution, low cost and easy to produce in scales. The iron-doped sodium bismuth titanate multi-ferric material has goof ferroelectricity and strong ferromagnetism and has wide application prospect in fields such as information ...

Method for preparing hexagonal disc shaped alpha-Fe2O3 powder

The invention relates to a preparation method of a hexagon-round disciform nanometer powder of alpha-Fe2O3. A water or solvent thermal synthesis is used for respectively dissolving an original reaction material, ferric nitrate and a mineralizer, potassium hydroxide into a mixed solvent which is composed of ethylene glycol and water; then a potassium hydroxide solution is added drop by drop into a ferric nitrate solution to get a suspension liquid precursor which is used for the water or solvent thermal reaction; the suspension liquid precursor is sealed into a reactor and is processed by heat treatment for 4 hours to 36 hours at the temperature of 160 DEG C to 240 DEG C to get the hexagonal disciform nanometer powder of alpha-Fe2O3; the thickness of the powder is not more than 150 nanometers and the disk track is not less than 250 nanometers. The products of the invention have the advantages of stable quality, high purity, good particle dispersion and excellent catalyzing property; the ...

Low temperature surface modification method for titanium dioxide nanocrystal

The invention discloses a low temperature surface modification method for titanium dioxide nanocrystal, which comprises the following steps: mixing tetrabutyl titanate with ethanol to form a solution A; mixing ethanol with de-ionized water to form a solution B; while stirring, dropwisely adding the solution A into the solution B to obtain TiO2 sol, drying and milling to obtain TiO2 nanocrystal; and adding the TiO2 nanocrystal into de-ionized water, carrying out ultrasonic dispersion to obtain a uniform dispersive solution, adding an excessive alkyl amide surface modifier, standing for aging at room temperature, drying and milling. The preparation method is simple; the chemical structure of the surface of anatase titanium dioxide nanocrystal is changed by the surface modification of alkyl amide, so that substantive lattice defects are induced to produce; and meanwhile, decrystallization occurs. Compared with titanium dioxide nanocrystal without surface modification, the invention has better ...

Method for preparing 0.85nm hydrated kaolinite by direct replacement intercalation

The invention discloses a method for preparing a 0.85nm hydrated kaolinite by direct replacement intercalation, which comprises the following steps: preparing a mixture of a urea/kaolinite intercalation compound and excessive urea by a grinding-subsequent heat treatment process; washing with deionized water to remove the excessive urea, thereby obtaining a urea/kaolinite intercalation compound; and finally, adding the urea/kaolinite intercalation compound into hot water, stirring for a few minutes, and carrying out centrifugal drying to obtain the 0.85nm hydrated kaolinite. The 0.85nm hydrated kaolinite prepared by the method disclosed by the invention can stably exist in air for a long time, and can be used for preparing precursors of other kaolinite intercalation compounds. The adopted raw material does not pollute the environment; and the preparation technique is simple and quick, has the advantage of low cost, and can easily implement industrial production.

Method for quickly preparing nano-crystal of V2O5 dried gel at low temperature

The invention discloses a method for quickly preparing a nano-crystal of a V2O5 dried gel at low temperature, which adopts a sol-gel method and comprises the following steps: 1) dissolving a vanadium compound into an organic solvent, stirring the mixture evenly to obtain solution A; 2) using acid liquor to adjust the pH value of deionized water to be less than 1, mixing the deionized water with the organic solvent, and stirring the mixture evenly to obtain solution B; and 3) dropping the solution A into the solution B dropwise, stirring the mixture continuously until stable sol is formed, aging the sol for at least 6 hours at room temperature, and then drying the sol at a temperature of between 50 and 70 DEG C. The method has the advantages of simple device, no need of special devices and high temperature conditions, good repeatability, good crystallization effect at low temperature, short preparation period and the like.

Method for preparing silver/zinc oxide compound film

The invention discloses a preparation method for a silver/zinc oxide coextruded film and includes the following steps: dissolving zinc compound and silver nitrate powder in organic solvent to obtain A solution; mixing water, complexing agent and organic solvent to obtain B solution; dropping the B solution into the A solution drip by drip and stirring the solution to obtain steady collosol; coating the collosol on a clean carrier by dip-pulling method and carrying out heat treatment at the temperature of 450 to 600 DEG C. The preparation method and the used equipment of the invention are simple and the obtained silver/zinc oxide coextruded film has a high silver content. The silver/zinc oxide film with high silver content has better photochemical catalysis property and electric conductivity and has the tendency of P-typed electric conduction at the same time.

Method for preparing spindle shaped alpha-Fe2O3 powder

The invention relates to a preparation method of a fusiform nanometer powder of alpha-Fe2O3. A water or solvent thermal synthesis is used for respectively dissolving an original reaction material, ferric nitrate and a mineralizer, potassium hydroxide into a mixed solvent which is composed of ethylene glycol and water; then a potassium hydroxide solution is added drop by drop into a ferric nitrate solution to get a suspension liquid precursor which is used for the water or solvent thermal reaction; the suspension liquid precursor is sealed into a reactor and is processed by heat treatment for 4 hours to 36 hours at the temperature of 160 DEG C to 240 DEG C to get the fusiform nanometer powder of alpha-Fe2O3; the length of the kernel is not less than 200 nanometers and the largest diameter is not less than 100 nanometers. The products of the invention have the advantages of stable quality, high purity, good particle dispersion and excellent catalyzing property; the preparation process is ...

Method for preparing silver and titanic oxide nano compound material at low temperature

The invention discloses a method for preparing a silver and titanium dioxide nano-composite at low temperature. The method comprises the following steps: (1) a titanium compound is dissolved in an organic solvent, so as to obtain an A solution; (2) the A solution is dripped into water gradually and stirred to form stable sol, so as to obtain a B solution; (3) a silver compound and diethanolameine are dissolved in the organic solvent, so as to obtain a C solution; and (4) the C solution and the B solution are mixed, aged and dried. The method has the advantages that the method is simple, needs no special device or high temperature condition, and can obtain the silver and titanium dioxide nano-composite at low temperature. In the prepared silver and titanium dioxide nano-composite, the size of silver particles is between 5 and 40 nanometers, and the size of titanium dioxide particles is between 4 and 6 nanometers. The composite has excellent properties in photocatalysis, deodorization and ...

Preparation method of nanometer barium zirconate

The invention discloses a method for preparing nano barium zirconate, comprising the following steps that: the zirconic oxyhydroxide precipitation and a de-ionized water solution of barium acetate are prepared and are taken as reaction raw materials, a mixing solution of quadrol and mono ethanolamine, diethanolameine or trolamine is taken as a solvent, potassium hydrate with an appropriate concentration is added to accelerate the crystallization at a temperature of between 150 and 230 DEG C, the thermal reaction is performed on the solvent and the barium zirconate nano powder body with good dispersivity is obtained. The method has the advantages of simple process, easy control, low cost and easiness for mass production. The prepared nano powder body has good crystallinity and dispersivity and narrow grain size distribution; moreover, the grain diameter can be adjusted by changing the technological parameter. The product has wide application prospect in the fields such as a microelectronic ...

Low temperature surface modification method for titanium dioxide nanocrystal

The invention discloses a low temperature surface modification method for titanium dioxide nanocrystal, which comprises the following steps: mixing tetrabutyl titanate with ethanol to form a solution A; mixing ethanol with de-ionized water to form a solution B; while stirring, dropwisely adding the solution A into the solution B to obtain TiO2 sol, drying and milling to obtain TiO2 nanocrystal; and adding the TiO2 nanocrystal into de-ionized water, carrying out ultrasonic dispersion to obtain a uniform dispersive solution, adding an excessive alkyl amide surface modifier, standing for aging at room temperature, drying and milling. The preparation method is simple; the chemical structure of the surface of anatase titanium dioxide nanocrystal is changed by the surface modification of alkyl amide, so that substantive lattice defects are induced to produce; and meanwhile, decrystallization occurs. Compared with titanium dioxide nanocrystal without surface modification, the invention has better ...

Method for preparing fluorapatite/hydroxyapatite sosoloid nano-powder

The present invention discloses a preparation method of fluorapatite/hydroxylapatite solid solution nanometer powder. The method takes calcium compound and part esterification phosphate or organic phosphate alcohol solution as the base and then adds fluoride compounds and organic amine so as to synthesize the fluorapatite/hydroxylapatite solid solution nanometer powder by the method of sol combustion self-spreading. The present invention solves the problems that the fluorapatite/hydroxylapatite solid solution nanometer powder is hard to prepare, and the fluorine content and the existence state of the fluorine are difficult to control, etc. The preparation method provided by the present invention has the advantages of simple operation, low cost and being easy for industrialization.

Method for preparing V-S co-doped titanium dioxide photocatalyst

The invention discloses a method for preparing a V-S co-doped titanium dioxide photocatalyst, which adopts a sol-gel method and comprises the following steps: 1), dissolving and mixing tetrabutyl orthotita and vanadylsulfate, which are precursors, in ethanol to obtain solution A; 2), mixing water and ethanol to obtain aqueous solution of ethanol; 3), adding the solution A into the aqueous solution of ethanol to perform a hydrolysis reaction, aging the product of the hydrolysis reaction to obtain titanium dioxide sol; and 4), drying the titanium dioxide sol under an infrared lamp. In the invention, a special device and a high temperature condition are not required, the preparation method is simple and low in cost and makes the realization of industrial production easily, and the prepared V-S co-doped titanium dioxide photocatalyst has high V-S co-doped titanium dioxide photocatalytic performance.

Preparation method of coated glass with self-cleaning and energy-saving functions

The invention discloses a preparation method of coated glass with self-cleaning and energy-saving functions. In the preparation method, the surface of a TiN film is partially oxidized by using a heat treatment process based on the normal pressure chemical vapor deposition process, non-conducting titanium dioxide nano particles are formed on the surface so as to form a special surface structure, and the surface structure has the self-cleaning and energy-saving functions. The method has the advantages of simple preparation process, low cost and high efficiency.

Titanium silicide nano-nail prepared by chemical vapor deposition under normal pressure and preparation method thereof

The invention discloses a titanium silicide nanometer nail prepared with normal pressure chemical vapour deposition method and the method. Setting a nanometer nail head on one end of nanometer line body, the other end connected with the nanometer nail head by transition zone. The method applies normal pressure chemical vapour deposition method, takes SiH4 and TiCl4 as reactant prosoma and takes N2 as diluent gas and protective atmosphere. Firstly, forming a matallic silicide film on a glass base slab, then forming silicide nanometer nail on the flim. The method has the low requirement to an apparatus, but has big output and high efficiency. The present physical vapour deposition method hasn't prepared the matallic silicide nanometer nail; the method doesn't use mold plates and catalyzer, can quickly produce a mass of monocrystalline titanium silicide nail; by changing preparing condition, all kinds of nanometer nail can be gotten; by changing mole ratio of reactant, the nanometer nail with ...

Nano Ag particle-Pb(Zr0.52Ti0.48)O3 filtration type composite ceramic film and preparation method thereof

The invention discloses a nano Ag particle-Pb(Zr0.45Ti0.48)O3 filtration type composite ceramic film and a preparation method thereof. In the composite ceramic film, polycrystalline perovskite phase ceramic is used as a substrate, and nano-silver particles are dispersed in the substrate, wherein the polycrystalline perovskite phase ceramic is Pb(Zr0.52Ti0.48)O3, and the molar ratio of the nano-silver to the Pb(Zr0.52Ti0.48)O3 is (0.2-0.8):1. The preparation method comprises the following steps of: preparing a Ag-Pb-Zr-Ti source containing sol precursor required by the composite film; and coating on an ITO (indium tin oxide)/glass substrate by applying a dip-coating method, and sintering in an air atmosphere to prepare the film, wherein a Ti source, a Zr source, a Pb source and a Ag sourcein the sol precursor are respectively tetrabutyl titanate, zirconium nitrate, lead acetate trihydrate and silver nitrate; the complexing agent is acetylacetone and citric acid; and the solvent is ethylene ...

Amorphous Sb-doped zinc tartrate micro-nano spheres and preparation method thereof

The invention discloses amorphous Sb-doped zinc tartrate micro-nano spheres. The diameters of the micro-nano spheres are 300-1200nm, and the atom percent of Sb and Zn is 0.06-15.0%. The preparation method comprises the following steps: (1) dissolving zinc nitrate and hexamethylenetetramine in water, adding equal mol of antimony ions and tartrate, and evenly stirring to obtain growth mother liquor for hydrothermal reaction; and (2) putting the growth mother liquor into a reaction kettle, keeping the temperature of 80-120 DEG C for 0.5-5 hours, standing, taking the precipitate, repeatedly flushing, centrifugalizing and drying. The invention has the advantage of simple preparation technique, and the particle sizes and the doping amount of the Sb-doped zinc tartrate micro-nano spheres can be regulated within a certain range.

Surface mount method of mineralized collagen gradient coating for medical titanium implant

The invention relates to a surface mount method of mineralized collagen gradient coating for medical titanium implant. Based on the effect of voltage and electrolyte composition on in-situ biomineralization self-assembly of collagen in electrolyte, permineralized calcium phosphate layer, mineralized collagen layer and unmineralized pure collagen layer are assembled from the titanium substrate upward in profile by electrochemical codeposition technology. The components and structure of the above product are similar to those of natural bones. The product of good biocompatibility and biological responsiveness can accelerate the osteointegration of implanted area and shorten the period of treatment. The strong binding force between the coating and the titanium substrate prevents the occurrence of coating shedding due to friction stress during the process of implantation. The coating provided by the invention is applicable to clinical applications.

Epitaxy strontium lead titanate film with LiNiO2 cushioning layer

Preparation method of non-sizing nano-calcium phosphate powder for medical slow release metal ion

Process of depositiong TiN film on glass substrate

Nickel doped bismuth sodium titanate multiferroics and preparation method thereof

The invention discloses a bismuth sodium titanate multiple iron material with a nickel-doping, the chemical formula of the which is Na0.5Bi0.5NixTi1-xO3, wherein x is more than 0 and less than or equal to 0.0125. The preparation method includes the stepd that the oxyhydroxide precipitation of nickel, bismuth and titanium is taken as the reaction material; the sodium hydroxide with a certain concentration is added for promoting the crystallization; a sodium hydroxide is carried out for obtaining the bismuth sodium titanate multiple iron material with a nickel-doping at the temperature of 160-200 DEG C. The obtained bismuth sodium titanate multiple iron material with a nickel-doping of the invention has ferroelectricity and ferromagnetism with simple technology process, non-pollution and a low cost, as well as an easy scale production. The bismuth sodium titanate multiple iron material with a nickel-doping has a good ferroelectricity and a better ferromagnetism, thus having an applied prospect ...

Method for preparing porous balls of strontium titanate

This invention discloses a method for preparing porous strontium titanate spheres. The method comprises: preparing titanium oxyhydroxide precipitate and deionized water solution of strontium as the reactants, adding KOH with an appropriate concentration to promote crystallization, adding poly(vinyl alcohol) surfactant with an appropriate concentration to control the morphology, and performing hydrothermal reaction at 150-200 deg.C to obtain monodispersed porous strontium titanate spheres. The method has such advantages as simple process, easy control of pore size and specific surface area, no pollution and low cost, and is suitable for mass production. The obtained porous strontium titanate spheres have such advantages as stable crystal quality, high powder dispersibility and large specific surface area, and can be used in microelectronics, catalysts, solar cells, sensors and luminescent materials.

On-line preparation method of surface graded oxidation low-reflection nano-silicon coated glass

The invention discloses an online method for preparing low-reflection nano-silicon coated glass with a gradient oxidized surface. The nano-silicon coated glass formed on line in a tin channel on the production line of float glass is continuously sent into an annealing furnace and is heat-treated under constant temperature for 1-3 minutes in high-temperature area of the annealing furnace so as to prepare the low-reflection nano-silicon coated glass with a gradient oxidized surface. The low-reflection nano-silicon coated glass with the gradient oxidized surface prepared through the method of the invention has reflectivity below 15 percent, thus effectively reducing optical pollution to the environment during the application of the coated glass.

Cobalt material doping with ferrous acid bismuth multi-iron and preparation method thereof

The invention discloses cobalt doping bismuth ferric material, the chemical formula of which is BicoxFe1-xO3; x is not more than 0.07 while is more than 0. The preparation method is that: oxyhydroxide precipitation of iron, bismuth and cobalt is made as the reaction material; potassium hydroxide with suitable concentration is added to promote crystallization; cobalt doping bismuth ferric powder is then obtained by hydrothermal reaction under the temperature of 120 degrees to 200 degrees. The invention dramatically enhances the magnetism of the bismuth ferric by doping cobalt; furthermore, the invention has simple technique, has no pollution, low cost and is suitable for mass production. The cobalt doping bismuth ferric material of the invention has stable crystallization quality and has wide application prospect in the fields such as information storage, satellite communication, precise control, circuit measurement of high voltage transmission lines and magnetoelectric sensors.

Epitaxy strontium lead titanate film with LiNiO2 cushioning layer

Nano-silicon composite carbon coated glass and quick-response on-line preparation method thereof

The invention discloses a nano-silicon compounded carbon coated glass and a fast-reaction online preparation method. The nano-silicon compounded carbon coated glass consists of glass substrates and films. The films are nano-silicon and nano-SiC compounded amorphous silicon carbide; wherein, the volume percentage of the nano-silicon, the nano-SiC and the amorphous silicon carbide is 40-45:0-5:50-60; the nano-silicon compounded carbon coated glass of the invention has relatively low reflectivity to visible light, corrosion resistance and wear resistance and low cost; the fast-reaction online preparation method of the invention utilizes thermal energy in the production to directly on line prepare the nano-silicon compounded carbon coated glass in a glass softening temperature area, thus realizing online production with low energy consumption.

Method for preparing lead titanate nanoparticles

The invention discloses a method for preparing lead titanate nanoparticles, comprising the following steps of: with titanium oxyhydroxide coprecipitate and a lead nitrate deionized aqueous solution as hydro-thermal reaction materials, adding mineralizer potassium hydroxide with appropriate concentration, introducing a glucose hydro-thermal decomposed solution in a hydro-thermal system to influence nucleation, controlling the particle size of a product, and carrying out a hydro-thermal reaction to synthesize lead titanate nanoparticles with the diameter of 30-60nm. The method disclosed by the invention has the advantages of simple and easily controllable technological process, no pollution, low cost and easiness in production.

Method for preparing TiN nano-powders

The invention discloses a method for preparing TiN nano-powder, which adopts a chemical vapor deposition process. A cleaned substrate is put into a vapor deposition reaction chamber; NH3 and preheated Ti source are directed to the reaction chamber by taking inert gas as carrier gas to prepare the TiN nano-powder. The method of the invention has simple process, low production cost, continuous production, high efficiency and high yield, with the size and the shape of the particle capable of being controlled conveniently and effectively; the TiN nano-powder produced has even particles, and can be spherical, cubic and nanorod-shaped, etc.

Nano-silicon composite carbon coated glass and quick-response on-line preparation method thereof

The invention discloses a nano-silicon compounded carbon coated glass and a fast-reaction online preparation method. The nano-silicon compounded carbon coated glass consists of glass substrates and films. The films are nano-silicon and nano-SiC compounded amorphous silicon carbide; wherein, the volume percentage of the nano-silicon, the nano-SiC and the amorphous silicon carbide is 40-45:0-5:50-60; the nano-silicon compounded carbon coated glass of the invention has relatively low reflectivity to visible light, corrosion resistance and wear resistance and low cost; the fast-reaction online preparation method of the invention utilizes thermal energy in the production to directly on line prepare the nano-silicon compounded carbon coated glass in a glass softening temperature area, thus realizing online production with low energy consumption.

Method for preparing doping titanium dioxide nano crystal

The invention discloses a process for preparing doped titanium dioxide nanocrystal, the steps comprise as follows that compounds of titanium and to-be-doped compounds with elements are dissolved in organic solvent, then fluid A is obtained, the fluid A is slowly dropped into the aqueous solution pH value of which is less than 6, then, the aqueous solution is stirred to form stable colloidal sols, lastly, the colloidal sols are dried. The invention doesn't need special devices and high temperature conditions, the process of preparation is simple, and the colloidal sols of the doped titanium dioxide nanocrystal which are of pure anatase phase structure can be obtained at standard temperature. The obtained nanocrystal particles of doped titanium dioxide is uniform in size distribution, and the diameter of the nanocrystal particles is less than 10 nanometers, which is provided with excellent functions of photocatalysis, deodorization and sterilization.

Sb-ZnO-doped mico-nano sphere and preparation method of Sb-ZnO-doped mico-nano sphere

The invention discloses an Sb-ZnO-doped mico-nano sphere, of which the diameter is 300-1200nm, and the atomic percent of Sb to Zn is 0.06%-15.0%. A preparation method of the Sb-ZnO-doped mico-nano sphere includes the steps as follows: dissolving zinc nitrate and hexamethylene tetramine in water; adding equimolar stibium ion and tartrate, and stirring to be uniform to obtain growing mother liquor of hydrothermal reaction; placing the growing mother liquor in a kettle and keeping temperature for 0.5-5h at the temperature of 80-120 DEG C; standing; later, repeatedly flushing, centrifugating and drying a precipitate; and conducting heat treatment at the temperature of 500-800 DEG C. The preparation technology is simple, and the size of the Sb-ZnO-doped mico-nano sphere and the doping quantity are adjustable within a certain range.

TiN<x> coated glass with combined function of heat insulation and heat preservation and method for preparing same

The invention discloses a TiNx coated glass with the functions of thermal insulation and heat preservation, and a preparation method thereof. A TiNx film on a glass substrate contains 44 percent to 59 percent of Ti and 41 percent to 56 percent of N by the atomic mol percentage and is deposited on the clean surface of the glass substrate by adopting a method of chemical vaporous deposition. The TiNx coated glass of the invention has the advantages of simple preparation technology, low production cost and high production efficiency. The TiNx film obtained in the method of the invention is uniform and compact texture, has good bonding with the glass substrate and high reflectivity both in a near-infrared region and a medium- and far-infrared region, showing excellent performance of energy saving and having the function of solar control and the performance of low radiation. Meanwhile, the rate of visible light transmission of the TiNx film can be ensured. Therefore, the TiNx film can be widely ...

Epitaxial strontium barium niobate film possessing transparent conductive lithium nickel oxide bottom electrode and its preparation method

A method for nano TiO2 polymerization synergistic modification of natural pearls

Similar bone biology medical material for slow releasing bioactivity factor as well as its preparing method

The invention discloses bone-like bio-medical material of a slow-release bioactive factor, the bone-like bio-medical material consists of a medical metal transplant body and the bone-like bioactive coating of the slow-release bioactive factor, and the bone-like bioactive coating is coated on the surface of the medical metal transplant body. The invention adopts an electrolytic deposition method to prepare, electrolyte solution contains calcium, a phosphorous compound, bone matrix collagen and the bioactive factor, the medical metal transplant body is taken as a working electrode, platinum is taken as a reference electrode, through the electrode reaction, the bone-like bioactive coating of the slow-release bioactive factor is deposited on the surface of the medical metal transplant body. Compared with the pure inorganic coating, through the adoption of the invention method, the bioactive coating acquired on the surface of the metal transplant body is similar to a natural bone in the component ...

Method for preparing V-S co-doped titanium dioxide photocatalyst

The invention discloses a method for preparing a V-S co-doped titanium dioxide photocatalyst, which adopts a sol-gel method and comprises the following steps: 1), dissolving and mixing tetrabutyl orthotita and vanadylsulfate, which are precursors, in ethanol to obtain solution A; 2), mixing water and ethanol to obtain aqueous solution of ethanol; 3), adding the solution A into the aqueous solution of ethanol to perform a hydrolysis reaction, aging the product of the hydrolysis reaction to obtain titanium dioxide sol; and 4), drying the titanium dioxide sol under an infrared lamp. In the invention, a special device and a high temperature condition are not required, the preparation method is simple and low in cost and makes the realization of industrial production easily, and the prepared V-S co-doped titanium dioxide photocatalyst has high V-S co-doped titanium dioxide photocatalytic performance.

Lead titanate nanotube with one-dimensional crystal structure and preparation method thereof

The invention discloses a lead titanate nanotube with a one-dimensional crystal structure, which has the characteristics as follows: (a) a space group is I4/m; (b) cell parameters show that each PbTiO3 unit cell is composed of forty atoms, wherein, Pb:Ti:O=1:1:3; and (c) x, y, and z space positions of a lead atom, a titanium atom and an oxygen atom in each unit cell are respectively as follows: Pb (0.165, 0.151 and 0.5), Ti (0.471, 0.142 and 0.5), O1 (0.605, 0.028 and 0.5), O2 (0.169, 0.289 and 0.0) and O3 (0.543, 0.260 and 0.5). The lead titanate nanotube prepared by a hydrothermal method has the one-dimensional crystal structure, high purity, good crystallization stability and good dispersibility, and has wide application prospect in the fields such as microelectronic devices, drivers, sensors and the like. The preparation method of the invention has simple equipment, easy control of process conditions, low cost and easy industrialized production.

Zn doped PST film with adjustable dielectric constant and its preparation process

Method for preparing bilaminar composite film of aluminum / hydrogenized amorphous silicon carbon alloy

Method for preparing barium titanate nanometer powder under room temperature

The invention discloses a method for preparing a barium titanate nano-powder at room temperature, which comprises the following steps: preparing the oxyhydroxide precipitate of titanium and the deionized aqueous solution of barium acetate as reaction materials, taking ethylene diamine solution or the mixed solution of ethylene diamine and ethanolamine as solvent, adding potassium hydroxide with a suitable viscosity to promote crystallization and obtaining the barium titanate nano-powder with a good dispersion after magnetically stirring for a certain period of time at room temperature. The method has the advantages of exemption from high temperature processing, energy conservation and environment-protection, simple process, easy control, low cost and easy scale production. The prepared product has the advantages of high purity, good dispersion and narrow size distribution which can be adjusted by changing technological parameters. The product has a wide application prospect in the fields ...

Method for preparing titanium dioxide three-dimensional ordered nano structure

The invention relates to a method for preparing a titanium dioxide three-dimensional ordered nano structure, which comprises the following steps of: firstly dissolving a titanium compound into a nonpolar solvent, adding hydrochloric acid, and stirring to obtain a mixed solution; synthesizing the mixed solution into titanium dioxide powder in a reaction kettle by a solvothermal method; and then washing the powder with ethanol, and drying. The invention has simple preparation process, and a template, a surfactant or other additives do not need to be added. The prepared titanium dioxide has a dandelion-shaped three-dimensional structure formed by arranging nano rods in order and has uniform size distribution.

Seepage type barium titanate-nickel zinc ferrite composite ceramic wave absorption material and preparation method thereof

The invention discloses a seepage type barium titanate-nickel zinc ferrite composite ceramic wave absorption material. The barium titanate phase encircles the nickel zinc ferrite phase, and the content of the nickel zinc ferrite phase is 70 to 90 mol percent. A preparation method comprises the following steps of: preparing a composite phase powder precursor by using a sol-gel method, and then further sheeting and sintering the composite phase powder to form the seepage type ceramic composite phase wave absorption material. The process is simple, the prepared composite ceramic wave absorption material has good wave absorption performance (in a frequency range of 18 to 40GHz, the composite ceramic wave absorption material has peak value in specific frequency and the return loss (RL) value of the material is -40 to -70dB), and the barium titanate-nickel zinc ferrite composite ceramic wave absorption material can be directly used as an engineering material and has broad application prospect ...

Method for preparing titanium dioxide three-dimensional ordered nano structure

The invention relates to a method for preparing a titanium dioxide three-dimensional ordered nano structure, which comprises the following steps of: firstly dissolving a titanium compound into a nonpolar solvent, adding hydrochloric acid, and stirring to obtain a mixed solution; synthesizing the mixed solution into titanium dioxide powder in a reaction kettle by a solvothermal method; and then washing the powder with ethanol, and drying. The invention has simple preparation process, and a template, a surfactant or other additives do not need to be added. The prepared titanium dioxide has a dandelion-shaped three-dimensional structure formed by arranging nano rods in order and has uniform size distribution.

On-line preparation method of surface graded oxidation low-reflection nano-silicon coated glass

The invention discloses an online method for preparing low-reflection nano-silicon coated glass with a gradient oxidized surface. The nano-silicon coated glass formed on line in a tin channel on the production line of float glass is continuously sent into an annealing furnace and is heat-treated under constant temperature for 1-3 minutes in high-temperature area of the annealing furnace so as to prepare the low-reflection nano-silicon coated glass with a gradient oxidized surface. The low-reflection nano-silicon coated glass with the gradient oxidized surface prepared through the method of the invention has reflectivity below 15 percent, thus effectively reducing optical pollution to the environment during the application of the coated glass.

Iron doped sodium-bismuth titanate multiferroics and method for producing the same

The invention relates to iron-doped sodium bismuth titanate multi-ferric material of which the chemical formula is: Na0.5Bi0.5FexTi<1 -X>O3, x is bigger than zero and less than or equal to 0.8. The preparing method comprises the steps: the oxyhydroxide precipitation of iron, the bismuth and the titanium are prepared as reaction materials; the sodium hydroxide of suitable concentration is added to promote crystallization; under a temperature ranging from 160 DEG C to 200 DEG C, the iron-doped sodium bismuth titanate multi-ferric material is obtained by hydrothermal reaction. The iron-doped sodium bismuth titanate multi-ferric material prepared by the invention has both ferroelectricity and ferromagnetism. Furthermore, the invention is simple in technical process, without pollution, low cost and easy to produce in scales. The iron-doped sodium bismuth titanate multi-ferric material has goof ferroelectricity and strong ferromagnetism and has wide application prospect in fields such as information ...

Nano Ag particle-(Pb0.4Sr0.6)TiO3 solid solution seepage-type composite ceramic film and preparation method thereof

The invention discloses a nano Ag particle-(Pb0.4Sr0.6)TiO3 solid solution seepage-type composite ceramic film and a preparation method thereof. The substrate of the ceramic film is polycrystalline perovskite phase ceramics in which nano silver particles scatter. The polycrystalline perovskite phase ceramics is Pb0.4Sr0.6TiO3 and the mol ratio of nano silver to Pb0.4Sr0.6TiO3 is 0.3-0.8:1. The preparation method comprises the following steps: successfully preparing an required sol precursor containing a Ag-Pb-Sr-Ti source; coating on an ITO (indium tin oxide)/glass substrate by a dip-coating method; and sintering in the air to prepare the film. By the method disclosed by the invention, a small-scale nano particle can be prepared by heat treatment in the air and the dispersity of the nano particle in the (Pb0.4Sr0.6)TiO3 film can be ensured, the seepage effect is realized. The permittivity of the film is 2 to 5 times that of apure strontium lead titanate film.

Nickel zinc ferrite material and preparation method thereof

Method for modifying medical metallic grafting body surface collagen by galvano-chemistry method

The present invention discloses a method for modifying the surface collagen of the medical metal graft with electrochemical method. The method uses the medical metal graft as a working electrode, platinum as a reference electrode, and the collagen molecules are self-assembled to collagen fiber with the electrode reaction and adhered to the surface of the medical metal graft to form the collagen fiber layer in the electrolyte solution dissolved with collagen molecules. The collagen which works as the essential component of the cell epimatrix can effectively increase the bioavailability and bioactivity on the surface of the medical metal. The collagen modifying medical metal graft obtained by the method of the invention settles the disadvantages of limited surface bioactivity of the commercial medical metal biological graft, not facilitating the restoring of the tissue and long curing time, etc. The invention has the advantages of simple preparing technique, highly effective and easy industrialization ...

Method for preparing fluorapatite/hydroxyapatite sosoloid nano-powder

The present invention discloses a preparation method of fluorapatite/hydroxylapatite solid solution nanometer powder. The method takes calcium compound and part esterification phosphate or organic phosphate alcohol solution as the base and then adds fluoride compounds and organic amine so as to synthesize the fluorapatite/hydroxylapatite solid solution nanometer powder by the method of sol combustion self-spreading. The present invention solves the problems that the fluorapatite/hydroxylapatite solid solution nanometer powder is hard to prepare, and the fluorine content and the existence state of the fluorine are difficult to control, etc. The preparation method provided by the present invention has the advantages of simple operation, low cost and being easy for industrialization.

Surface mount method of mineralized collagen gradient coating for medical titanium implant

The invention relates to a surface mount method of mineralized collagen gradient coating for medical titanium implant. Based on the effect of voltage and electrolyte composition on in-situ biomineralization self-assembly of collagen in electrolyte, permineralized calcium phosphate layer, mineralized collagen layer and unmineralized pure collagen layer are assembled from the titanium substrate upward in profile by electrochemical codeposition technology. The components and structure of the above product are similar to those of natural bones. The product of good biocompatibility and biological responsiveness can accelerate the osteointegration of implanted area and shorten the period of treatment. The strong binding force between the coating and the titanium substrate prevents the occurrence of coating shedding due to friction stress during the process of implantation. The coating provided by the invention is applicable to clinical applications.

Biodegradable calcium phosphate/collagen composite materials for medical use and method for preparation thereof

The present invention discloses one kind biodegradable medical composite calcium phosphate/collagen material and its preparationpr. The composite calcium phosphate/collagen material consists of nanometer level calcium phosphate in 50-80 wt% and collagen in 20-50 wt%, where the calcium phosphate may be amorphous calcium phosphate, alpha-tricalcium phosphate, beta-tricalcium phosphate, apatite, calcium biphosphate, composite apatite/alpha-tricalcium phosphate powder, composite apatite/beta-tricalcium phosphate powder, or composite alpha-tricalcium phosphate powder/beta-tricalcium phosphate powder. The composite calcium phosphate/collagen material has homogeneously distributed calcium phosphate, close combination between calcium phosphate and collagen, continuously adjustable degradation rate, high biocompatibility and other features, and is especially suitable for use as bone repairing material.

Method for preparing silver/zinc oxide compound film

The invention discloses a preparation method for a silver/zinc oxide coextruded film and includes the following steps: dissolving zinc compound and silver nitrate powder in organic solvent to obtain A solution; mixing water, complexing agent and organic solvent to obtain B solution; dropping the B solution into the A solution drip by drip and stirring the solution to obtain steady collosol; coating the collosol on a clean carrier by dip-pulling method and carrying out heat treatment at the temperature of 450 to 600 DEG C. The preparation method and the used equipment of the invention are simple and the obtained silver/zinc oxide coextruded film has a high silver content. The silver/zinc oxide film with high silver content has better photochemical catalysis property and electric conductivity and has the tendency of P-typed electric conduction at the same time.

Method for preparing titanium dioxide nanocrystalline with highlight catalytic activity in low-temperature

The invention discloses a method for preparing a titania nanocrystal with high photocatalytic activity at a low temperature. The method is the sol-gel method and comprises the following steps: firstly, titanium compounds are dissolved in an organic solvent, and a solution A is obtained; secondly, a water solution with a pH value between 1 and 6 is mixed with the organic solvent, and a solution B is obtained; thirdly, the solution A is slowly and dropwise dripped into the solution B, and the mixture is stirred until stable sol is formed; and fourthly, the sol is aged at a normal temperature and dried at a temperature of between 50 and 100 DEG C, and then the titania nanocrystal is prepared. The method for preparing the titania nanocrystal with high photocatalytic activity is performed at the low temperature, does not require special devices, and requires simple devices; and the nanocrystal obtained has a small particle size, has a diameter of about 5 nanometers, and has superior photocatalytic ...