38 results about "Zinc cadmium sulfide" patented technology

The invention provides a porous two-dimensional zinc sulfide nanosheet and its preparation method and application, belonging to the technical field of nanophotocatalysts. The preparation method of porous two-dimensional zinc cadmium sulfide nanosheets provided by the invention includes the following steps: mixing zinc salt, ethylenediamine aqueous solution and sulfur source, performing a first solvothermal reaction to obtain a zinc sulfide-ethylenediamine precursor; Mix the zinc sulfide-ethylenediamine precursor, cadmium salt and organic solvent to perform a second solvothermal reaction to obtain the zinc sulfide cadmium-ethylenediamine precursor; combine the zinc sulfide cadmium-ethylenediamine precursor and Mix water and perform hydrothermal reaction to obtain porous two-dimensional zinc sulfide nanosheets. The porous two-dimensional zinc sulfide nanosheets prepared by the invention have uniform surface pore distribution, many reaction active sites, stable performance, and excellent catalytic effect on photocatalytic water splitting to produce hydrogen.

The invention discloses a phosphorus-doped cadmium zinc sulfide solid solution catalyst. The phosphorus-doped cadmium zinc sulfide solid solution catalyst adopts a chemical formula of P-ZnxCd1-xS, wherein x is greater than or equal to 0 and smaller than or equal to 1. The invention further discloses a preparation method of the phosphorus-doped cadmium zinc sulfide solid solution catalyst. The preparation method comprises the following steps: uniformly mixing a cadmium zinc sulfide solid solution and a phosphorus source, and performing a phosphorization reaction to obtain the phosphorus-doped cadmium zinc sulfide solid solution catalyst. By the preparation method, raw materials have few types and are cheap and easy to obtain, a reaction condition is mild, and operation is easy. The invention further discloses a comprises a photocatalytic system comprising the phosphorus-doped cadmium zinc sulfide solid solution catalyst. Any cocatalyst and any electronic sacrificial agent are required to be added in the photocatalytic system, a reaction system is simple, and the water decomposition is catalyzed under a pure water condition, so that practical application is more facilitated.

The invention discloses a preparation method for a metal sulfide and a composite metal sulfide nano crystal material, which is suitable for the preparation of the nano crystal materials of cadmium sulfide, cuprous sulfide, zinc sulfide, lead sulfide, bismuth sulfide, and zinc-cadmium sulfide. The method is characterized in that water or organic solvent used in the existing hydrothermal or solvent thermal synthetic methods is replaced with melt composite alkali metal hydroxide which is synthesized through a chemical reaction under the normal atmosphere and a temperature between 100 and 300 DEG C. The raw materials used are soluble inorganic metal salts and sulfide or sulfide compounds, thereby having less controllable parameters and simple art, and being able to amplify manufacturing during the process of synthesis. Metal sulfide crystal produced has the advantages of good crystal, clean surface and even size, and is suitable for the research on the intrinsic properties and the maximum play of the functions of the nano crystal materials. The metal sulfide and the composite metal nano crystal materials have properties of a semiconductor, LED and optoelectronic, thereby being suitable for biomarker and preparation of a nano electronic apparatus, an LED apparatus and an optoelectronic apparatus.

The invention relates to a solid solution catalyst with simple substances nickel and cobalt loaded surface and for photocatalytic decomposition of water to produce hydrogen, and a preparation method thereof, and belongs to the technical field of photocatalysts. The preparation method of the catalyst for high-efficiency photocatalytic decomposition of water to produce hydrogen comprises the following steps: dissolving copper acetate and zinc acetate in deionized water, adding sodium sulfide to form a solid solution precursor, adding the obtained precursor to a reaction kettle, reacting at a certain temperature for a period of time, washing the obtained product, and drying to obtain a product zinc cadmium sulfide; and loading metals nickel and cobalt on the surface of the zinc cadmium sulfide. The catalyst improves the reaction rate of hydrogen production through photocatalytic decomposition of water to 211417[mu]mol h<-1>g<-1> from 78130[mu]mol h<-1>g<-1> of pure zinc cadmium sulfide, and improves the performances above 2 times. The catalyst has industrial application in energy crisis solution, and is a new technical means for producing environmentally-friendly novel energy.