Sulfide coated particle as well as preparation method and application thereof

A sulfide, coating type technology, applied in the field of chemistry, can solve the problems of expensive raw materials, difficult industrialization promotion, complicated process, etc., and achieve the effect of simple coating method, strong universality, and controllable thickness

Inactive Publication Date: 2018-05-04
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned methods all have defects such as expensive raw materials, complicated processes and d

Method used

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  • Sulfide coated particle as well as preparation method and application thereof
  • Sulfide coated particle as well as preparation method and application thereof
  • Sulfide coated particle as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Preparation of cobalt sulfide-coated polystyrene

[0045] 0.2g of polystyrene particles (average particle diameter of 500nm), 0.124g of cobalt acetate (1*10 -3 mol / L) reducing agent hydrazine hydrate 400 microliters, sulfur source thioacetamide 0.075g (2*10 -3 mol / L) in 50 ml of solvent water, and reflux at 40° C. for 12 h under stirring for hydrolysis reaction, centrifugation, washing, and drying to obtain cobalt sulfide-coated polystyrene particles.

[0046] The cobalt sulfide-coated polystyrene particles have a core-shell structure, and its electron micrograph is shown in figure 1 shown. The material constituting the core is polystyrene with a particle size of about 500nm, and the material constituting the shell is cobalt sulfide in crystal phase with a thickness of about 30nm, and the cobalt sulfide uniformly covers the surface of polystyrene.

Embodiment 2

[0048] Zinc sulfide coated silica particles

[0049] Silica particles 0.1g (average particle diameter is 400nm), zinc nitrate hexahydrate 0.149g (1*10 -3 mol / L) reducing agent hydrazine hydrate 400 microliters, sulfur source thiourea 0.076g (2*10 -3 mol / L) in 50 ml of solvent water, and reflux at 55° C. for 8 h under stirring for hydrolysis reaction, centrifugation, washing, and drying to obtain zinc sulfide-coated silica particles.

[0050] The zinc sulfide-coated silica particles have a core-shell structure, and its electron micrograph is as follows: figure 2 shown. The material constituting the core is silicon dioxide spheres with a particle size of about 400nm, and the material constituting the shell is zinc sulfide in the crystalline phase with a thickness of about 20nm; and the zinc sulfide uniformly covers the surface of the silicon particles.

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Abstract

The invention discloses a sulfide coated particle as well as a preparation method and an application thereof. The sulfide coated particle comprises a core and a shell coating the core, wherein the core is prepared from at least one of metal, oxide, metal hydroxide, metal inorganic salt, elemental carbon or oxysome thereof, carbide, nitride, semiconductor and organic matter; the shell is prepared from metal sulfide. The to-be-coated core is mixed with the metal salt, a reducing agent and a sulfur source with a liquid phase method, metal sulfide is precipitated to the particle surface through in-situ reduction, and uniform, continuous and controllable coating of the core surface with metal sulfide is realized. The coating method is simple, reaction conditions are mild, universality is high,a coating layer is controllable in thickness, complete and uniform, and the sulfide coated particle has quite broad practical application prospect in the fields of electrocatalysis, lithium ion batteries, biomedicine and the like.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to a sulfide-coated particle and a preparation method and application thereof. Background technique [0002] Many sulfides have excellent electrochemical properties, such as photocatalytic water splitting properties of cadmium sulfide and molybdenum sulfide, applications in quantum dot-sensitized solar cells of lead sulfide, cadmium sulfide, and zinc sulfide, molybdenum sulfide, cobalt sulfide, The properties of cuprous in catalytic hydrogenation, battery negative electrode, supercapacitor and so on. [0003] At present, the application of sulfide mainly focuses on quantum dots, nanospheres and nanotubes. For example, CN200710171388.1 discloses a preparation method of cadmium selenide / cadmium sulfide / zinc sulfide core-shell quantum dots. CN201310614267.5 discloses a one-dimensional cadmium sulfide nanorod structure modified by molybdenum disulfide, which has the performance of ...

Claims

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Application Information

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IPC IPC(8): B01J13/02C01G51/00C01G9/08C01G39/06
CPCB01J13/02C01G9/08C01G39/06C01G51/30C01P2004/04
Inventor 曹安民吴子潇万立骏
Owner INST OF CHEM CHINESE ACAD OF SCI
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