Preparation process of micron zinc sulfide powder

Novel red-light fluorescent powder and method for preparing same

Noctilucent nutrient hair cream and preparation method thereof

The invention relates to a long-lasting night-luminous hair cream material and a preparation method thereof, which pertains to the technical field of cosmetics. The night-luminous nutritious hair cream is composed of the following components: 5 to 20 parts of long-lasting light-emitting material, 20 to 60 parts of substances with oil phase, 20 to 50 parts of substances with water phase, 1 to 10 parts of nutrients and 1 to 10 parts of assistant agent; the night-luminous nutritious hair cream of the invention is characterized by stable nature, good hare care effect, long night-luminous time and so on, the hair cream can maintain stable property and nutritious effects for a long time at the room temperature, and the night-luminous effect can emit the light for about 12 hours after being irradiated for 8 minutes.

Novel eschynite structure green luminescent material and method for producing the same

The invention provides a novel green fluorescent material with aeschynite structure. The general chemical formula of the green fluorescent material is: La1 to mREmNbTiO6, wherein, RE is one element of rare earth elements Tb, Er, Dy and Ho. The preparation method of the green fluorescent material is: niobium pentoxide is dissolved into hydrofluoric acid; ammonia is dripped into the solution until the pH reaches 8.5 to 9.5; white niobium hydroxide precipitate is filtrated and washed after aging, and then the precipitate is dissolved into the citric acid solution to form the transparent Nb to citric acid solution; tetrabutyl titanate, lanthanum nitrate, rare to earth nitrate with RE<3+> and ammonim nitrate are added into the Nb to citric acid in sequence and heat and the solution is stirred so as to obtain the precursor gelatin; the precursor gelatin is sintered to produce the fluey and amorphous powder; finally the green phosphor powder is produced after thermal annealing treatment. The green ...

Method for preparation of zinc niobate nano material

Fluorescent material for white light LED and preparation method thereof

The invention relates to a fluorescent material for a white light LED and a preparation method thereof. The chemical formula of the fluorescent material is MgxSryAlmO4:Euz1<2+>, Euz2<3+>, Rz3<3+>. Themethod comprises the following steps: dissolving components in the formula in deionized water according to a molar ratio; adding urea; after the components and the urea are dissolved, heating the mixture to generate gel; and calcining the gel at 500-800 DEG C to obtain the foam fluorescent material. The fluorescent material has simple process, safety, lower production temperature and energy saving. The obtained product has uniform phase, small grain size, good chemical stability and no toxin and radiation.

Novel up-conversion luminescent material and method for preparing the same

The invention provides a novel up-conversion luminescent material which has the general chemical formula of La1-mREmNbTiO6, wherein RE is one of the rare earth elements Er, Sm and Nd; when RE is Er, the numeric area of m is more than 0.001 and less than 0.2; when RE is Sm, the numeric area of m is more than 0.001 and less than 0.16; when RE is Nd, the numeric area of m is more than 0.001 and less than 0.15. The preparation method of the up-conversion luminescent material includes the following steps: firstly, niobium pentaoxide is dissolved in hydrofluoric acid and then ammonia water is instilled in the solution; secondly, after aging, filtration and cleaning, the deposit is dissolved in citric acid aqueous solution; thirdly, tetrabutyl titanate, lanthanum nitrate, rare earth nitrate and ammonium nitrate which are added in Nb-citric acid solution are heated up and stirred; finally, sintering and thermal annealing treatments to the obtained precursor gel are completed. The novel up-conversion ...

Preparation method of sulphur-indium-copper nano powder

The present invention provides S-In-Cu powder preparing process, which includes the following steps: 1. dissolving In salt, thioacetamide and Cu salt in the molar ratio of 1 to 2-9 to 1 separately in glycol; 2. mixture the resultant solutions directly or after pre-heating, and refluxing for some time to obtain black precipitate; and 3. separating the precipitate, washing and drying to S-In-Cu powder in homogeneous granularity distribution. The powdered product may be further treated to obtain S-In-Cu powder in high crystallization degree and great granularity. The present invention has simple preparation process, high safety, low cost, high operability and other features, and the prepared S-In-Cu powder is used in producing devices.

Novel red-light fluorescent powder and method for preparing same

The invention provides novel red light-emitting fluorescent powder and a preparation method thereof, wherein the fluorescent powder is obtained through doping Eu<3+> or Eu<3+> and Li<+> in YNbTiO6 substrate; when Eu<3+> is doped alone, the general chemical formula is Y1-xNbTiO6:xEu<3+> with the numeric area of x more than 0.001 and less than 0.35; when both Eu<3+> and Li<+> are doped, the general chemical formula is Y1-x-yNbTiO6:xEu<3+>, yLi<+> with the numeric area of x more than 0.001 and less than 0.35 and the numeric area of y more than 0.001 and less than 0.1. The preparation method includes the following steps: firstly, niobium pentaoxide is dissolved in hydrofluoric acid and then ammonia water is instilled in the solution for neutralization; secondly, after aging, filtration and cleaning, the niobium hydroxide deposit is dissolved in citric acid aqueous solution; thirdly, tetrabutyl titanate, yttrium nitrate, europium nitrate, lithium nitrate and ammonium nitrate which are added ...

异质结构纳米光催化薄膜及其制备方法

The present invention belongs to the field of chemical technology. The hetero structure photocatalytic film consists of substrage, transition layer and photocatalytic layer, where the transition layer material is titanate. Unlike available photocatalytic film material, which has low photocatalytic activity, short use life, easy cracking, low adhesion, etc., the present invention has simple technological process, high activity, long service life, high adhesion and other advantages.

Method of preparing Bi3TiNbO9 micro-nano piezoelectricity ferro-electricity powder

This invention relates to a method for low temperature preparation of Bi3TiNb09 nanometer power. The preparation procedures are: (1) niobium pentoxide is dissolved in hydrofluoric acid under 80-90deg.C, then ammonia water is dropped into the solution, regulating the pH value to 8.5-9.5, to obtain precipitate of niobium hydroxide, which, after filtration and washing, is then dissolved in citric acid solution to produce Nb-citric acid solution; (2), tetrabutyl titanate, pentahydrate bismuth nitrate, EDTA and ammonium nitrate are added successively into aboved-mentioned solution, together with heating and agitation to obtain pre-product-gelatin; (3), said gelatin is then sintered to obtain this inventive product. This invention utilizes oxidation-reduction method having advantages of simple process, low reaction temperature, short reaction time, small particle size and even distribution and high-pureness.

Method of preparing Bi3TiNbO9 micro-nano piezoelectricity ferro-electricity powder

Domain twining removing method for potassium iodate crystal

The invention is a kind of de-twin and de-electric-domain method for KIO3 crystal. Ehe KIO3 crystal is a nonlinear optic material and can be used for making optical device. Because its electric domain and twin crystal are relatively complex, there is no de-electric-domain and de-twin-method yet, thus its application is limited. the present invention can make KIO3 crystal de-twin and de-electric-domain and provides an excellent material and devices made from said crystal.

一种低温制备长余辉纳米发光材料的方法

The present invention belongs to the field of chemical material technology, and is mainly the preparation process of long afterglow nano light emitting material with strontium nitrate, aluminum nitrate, europium nitrate and dysprosium nitrate as main material, urea, boric acid and other reagent, and through dissolving in deionized water, heating, sintering and other steps. Compared with available technology, the present invention has the advantages of simple technological process, low power consumption, high brightness, long afterglow, etc.

Noctilucent eye shadow and its preparation method

The invention relates to a night-luminous eye shadow and a preparation method thereof, which pertains to the technical field of cosmetics. The night-luminous eye shadow is composed of the following components: 5 to 25 parts of long-lasting light-emitting material, 10 to 30 parts of substances with oil phase, 40 to 70 parts of substances with water phase, 10 to 30 parts of added powder, 1 to 5 parts of antioxidant, 1 to 10 parts of spices and 1 to 5 parts of preservative; the invention utilizes the light-storing properties of the long-lasting light-emitting materials and forms the composite night-luminous eye shadow by compounding with talcum powder, esters and so on. The eye shadow of the invention is characterized by easy smudge, thickness, difficult change of the color, long night-luminous time and so on.

Noctilucent nutrient hair cream and preparation method thereof

The invention relates to a long-lasting night-luminous hair cream material and a preparation method thereof, which pertains to the technical field of cosmetics. The night-luminous nutritious hair cream is composed of the following components: 5 to 20 parts of long-lasting light-emitting material, 20 to 60 parts of substances with oil phase, 20 to 50 parts of substances with water phase, 1 to 10 parts of nutrients and 1 to 10 parts of assistant agent; the night-luminous nutritious hair cream of the invention is characterized by stable nature, good hare care effect, long night-luminous time andso on, the hair cream can maintain stable property and nutritious effects for a long time at the room temperature, and the night-luminous effect can emit the light for about 12 hours after being irradiated for 8 minutes.

Process for polassium iodate crystal

The invention is a kind of de-twin and de-electric-domain method for KIO3 crystal. Ehe KIO3 crystal is a nonlinear optic material and can be used for making optical device. Because its electric domain and twin crystal are relatively complex, there is no de-electric-domain and de-twin-method yet, thus its application is limited. the present invention can make KIO3 crystal de-twin and de-electric-domain and provides an excellent material and devices made from said crystal.

White light emission luminescent material and method for making same

The invention provides a white light-emitting fluorescent material and a preparation method thereof, wherein the chemical formula of the fluorescent material is Ba2LaZrO5.5:Ce<3+>. The preparation method of the white light-emitting fluorescent material includes the following steps: firstly, barium nitrate, lanthanum nitrate, zirconium nitrate and cerous nitrate are dissolved in deionized water; secondly, urea and citric acid, which are added in the solution, are heated up and stirred after dissolution; thirdly, combustion sintering at 500 to 900 DEG C is completed; finally, the sintering product is ground and made into the white light-emitting luminescent material through heat treatment after thermal insulation at 1,050 to 1,150 DEG C. The fluorescent material prepared through adopting combustion method can emit white light and has higher emission intensity, uniform phase, small product granularity (at nanometer grade) and excellent chemical stability; moreover, the fluorescent material ...

Novel red luminescent material and method for producing the same

The invention provides a novel red fluorescent material and a preparation method thereof. The general chemical formula of the red fluorescent material is: La1 to xNbTiO6:xEu<3+>, wherein, the value of x is that 0.001 is less than x and the x is less than 0.3. The preparation method is: first niobium pentoxide is dissolved into hydrofluoric acid, ammonia is dripped into the solution until the pH reaches 8.5 to 9.5 and the sediment of niobium hydroxide is obtained, and then the sediment, tetrabutyl titanate, lanthanum nitrate, europium nitrate, and ammonium nitrate are dissolved into the citric acid solution to obtain the precursor gelatin after heating and stirring. The fluey powder obtained after sintering the gelatin can produce the red emission fluorescent material LaNbTiO6:Eu<3+>. The technique procedure of the invention is safe, simple, and easy to control, and solves the defect that traditional technique can not realize the uniform distribution of active ion in matrix. The red fluorescent ...