Method for preparing multiple high-purity anisotropic gold nano particle

Method for synthesizing zinc oxide particle

The invention discloses a synthesis method of zinc oxide particles, which includes the following steps: preparing three elements solution of sodium hydroxide, polyvinylpyrrolidone and n-amyl alcohol; stirring zinc nitrate alcohol solution while adding the three elements solution, continuously stirring for 10 to 30 minutes at 30 to 40 DEG C, then standing silent for 24 to 72 hours; carrying out centrifugation on the reaction solution after standing and removing liquid, thereby, the zinc oxide particles of high purity are achieved. The invention uses the polyvinylpyrrolidone as promoting agent and guiding agent for the crystallization of oxide zinc, which not only realizes the crystallization of zinc oxide at room temperature, but also realizes the regulation of luminescence band-gap of zinc oxide particles through the simple change of experimental parameters to lead the free regulating of zinc oxide appearance among the structures of single layer, quasi double layer, double layer and one ...

Method for preparing single dispersion triangular nano silver slice

Method for enwrapping ferric oxide by silicon dioxide

The invention discloses a process for coating ferric oxide with silicon dioxide, which comprises the procedures that ferric oxide particles are homogeneously dispersed into mixed solution of ethanol and ammonia, then the mixture is added into n-pentanol solution of polyvinylpyrrolidone in the condition of stirring, the mixture is continuously stirred for 6-24hours, after the reaction liquid is centrifugated, the fluid portion is removed, thereby ferric oxide particles coated by silicon dioxide are achieved. The invention employs restriction of polyvinylpyrrolidone to water and perfect adsorption effect of polyvinylpyrrolidone to ferric oxide, successfully locates hydrolysis reaction of ethyl orthosilicate on the surface of the ferric oxide, thereby the ferric oxide is coated homogeneously. Thickness of layer of the silicon dioxide can be constantly increased by simply increasing mass ratio of ethyl orthosilicate and ferric oxide particles. The invention has the advantages of low costs and ...

Pusher for scraper loader

The invention relates to a pusher for a scraper loader. The pusher comprises a cross shaft, wherein two ends of the cross shaft are provided with vehicle-pushing wheels which can rotate relatively; and one side of the central part of the cross shaft is fixedly connected with a push-and-pull cylinder, and the other side of the central part of the cross shaft is fixedly connected with a vehicle-pushing standing board. After the scraper loader is provided with the pusher, a vehicle can be semi-automatically pushed out of a discharging groove of the scraper loader, the working efficiency is improved, the labor intensity of workers is reduced, personnel are effectively protected from being hurt, safety factors of scraping and loading of the scraper loader are improved, and the pusher is safe to use.

Method for preparing triangular nano palladium slice

Method for enwrapping ferric oxide by silicon dioxide