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Zinc-sulfide, cuprous-sulfide and carbon nanocomposite and preparing method thereof

A technology of cuprous sulfide and composite materials, applied in the direction of zinc sulfide, etc., can solve the problems of increased cost, environmental pollution, not as economical as in-situ synthesis, etc., to enhance stability, improve catalytic efficiency, and promote the separation of electrons and holes Effect

Active Publication Date: 2016-10-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above literature, Cu 2 The synthesis method of S usually requires Cu(I) precursors, organic solvents, and surfactants, which undoubtedly increases the cost. It is not as economical as in-situ synthesis, and it is easy to pollute the environment.

Method used

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  • Zinc-sulfide, cuprous-sulfide and carbon nanocomposite and preparing method thereof
  • Zinc-sulfide, cuprous-sulfide and carbon nanocomposite and preparing method thereof
  • Zinc-sulfide, cuprous-sulfide and carbon nanocomposite and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Prepare a mixed salt solution of zinc nitrate and copper nitrate, in which Zn 2+ The concentration is 0.08M, Cu 2+ The concentration is 0.02M; prepare a sodium benzoate solution with a concentration of 0.03M; add the above two solutions into the four-necked bottle at the same time, the molar ratio of sodium benzoate to zinc nitrate is 2, take 0.5M sodium hydroxide solution to adjust the pH value 6.2, keep the reaction temperature at 80°C, after crystallization for 24 hours, wash and dry at low temperature; store the prepared precursor at room temperature under H 2 React in S atmosphere for 1 minute, H 2 S gas flow rate is 100mL min -1 , to obtain zinc sulfide, copper sulfide and benzoic acid nanocomposite materials, and then roast the zinc sulfide, copper sulfide and benzoic acid composite nanomaterials at 650°C for 8 hours in a nitrogen atmosphere to obtain zinc sulfide, cuprous sulfide and carbon nanocomposites.

[0025] from figure 1 -a It can be seen that the be...

Embodiment 2

[0030]Prepare a mixed salt solution of zinc nitrate and copper nitrate, wherein the concentration of Zn2+ is 0.05M, and the concentration of Cu2+ is 0.05M; the sodium benzoate solution with a concentration of 0.05M is prepared; the above two solutions are added to the four-necked bottle simultaneously, and salicylic acid The molar ratio of sodium to zinc nitrate is 0.5. Add the above two solutions into the four-neck flask at the same time, take 0.5M sodium hydroxide solution to adjust the pH value to 7, keep the reaction temperature at 80°C, crystallize for 24 hours, wash, Dry at low temperature, react the prepared precursor in H2S atmosphere at room temperature for 60 minutes to obtain composite nanomaterials of zinc sulfide, copper sulfide and benzoic acid, and then place the composite nanomaterials of zinc sulfide, copper sulfide and benzoic acid at 650°C in nitrogen Calcined under atmosphere for 8h to obtain zinc sulfide, cuprous sulfide and carbon nanocomposites.

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Abstract

The invention discloses a one-dimensional zinc-sulfide, cuprous-sulfide and carbon nanocomposite and a preparing method thereof. The preparing method includes the steps that zinc salt, copper salt and benzoate serve as raw materials, the coordination of zinc ions, copper ions and carboxyl functional groups of benzoic acid radicals is adopted, self assembling is carried out in an aqueous phase solution, and a benzoic-acid-radical-intercalation layered zinc-hydroxide-copper nanocomposite is obtained; then the benzoic-acid-radical-intercalation layered zinc-hydroxide-copper nanocomposite is reacted with hydrogen sulfide, the product is roasted in nitrogen, and the zinc-sulfide, cuprous-sulfide and carbon nanocomposite is prepared. According to the zinc-sulfide, cuprous-sulfide and carbon nanocomposite and the preparing method, the preparing technology is simple, sources of raw materials are rich, production is easy to enlarge, and compounding of cuprous sulfide, zinc sulfide and carbon nanomaterials and effective regulating and control of the size and the dispersity of cuprous sulfide nano particles are achieved with a solid-state pyrolysis method.

Description

technical field [0001] The invention belongs to the technical field of semiconductor nanocomposite material preparation, and in particular relates to a zinc sulfide, cuprous sulfide and carbon nanocomposite material and a preparation method thereof. Background technique [0002] Nano-ZnS is an important II-VI wide bandgap semiconductor, which has the characteristics of fast photogenerated electron-hole velocity and high negative electron reduction potential. ZnS is a wide-bandgap photocatalyst that can only be excited by ultraviolet light, and this part of sunlight has low energy. Cu 2 S is a p-type narrow-band semiconductor material with a band gap of about 1.2 eV. It can be excited by visible light and has good chemical and thermal stability. It has great application potential in the field of photocatalysis. Using Cu 2 The modification of ZnS by S has become a hotspot in the field of photocatalysis. Robin Jude, Vimal Michael et al prepared Cu with a mixture of sodium d...

Claims

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Application Information

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IPC IPC(8): C01G9/08
CPCC01G9/08C01P2002/72C01P2004/03C01P2004/16C01P2004/64C01P2004/82
Inventor 王连英王东阳刘改利魏博文
Owner BEIJING UNIV OF CHEM TECH
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