Copper-cobalt-sulfur nanosheet array/molybdenum foil composite material and preparation method and application thereof

A nanosheet array and composite material technology, applied in the field of micro-nano material preparation, can solve the problems of small specific surface area, low electron transport performance, and few catalytic active sites of transition metal sulfides, and achieve good electrochemical performance and catalytic performance , Improve the electron transmission rate, good practical application value effect

Active Publication Date: 2020-01-24
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, bulk transition metal sulfides have small specific surface area, few catalytic active sites, and low electron transport performance, so the catalytic activity is not high.

Method used

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  • Copper-cobalt-sulfur nanosheet array/molybdenum foil composite material and preparation method and application thereof
  • Copper-cobalt-sulfur nanosheet array/molybdenum foil composite material and preparation method and application thereof
  • Copper-cobalt-sulfur nanosheet array/molybdenum foil composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A method for preparing a copper-cobalt-sulfur nanosheet array / molybdenum foil composite material, comprising the following steps:

[0044] (1) Sonicate the molybdenum foil with a size of 1cm×4cm for 5 minutes with deionized water and ethanol to clean the surface dirt, then place the cleaned molybdenum foil at 60°C for 5 hours in vacuum and set aside.

[0045] (2) Weigh 0.5mmol cobalt nitrate hexahydrate, 0.5mmol copper nitrate trihydrate and 2mmol urea, add 30mL deionized water in turn, stir until the three are completely dissolved, and obtain a uniform solution; transfer the solution to the tetrafluoroethylene lining Put the molybdenum foil treated in step (1) into the solution, close the reaction kettle, put it into a blast oven, and heat it at a constant temperature for 6 hours at 100°C; after the reaction is completed, take out the molybdenum foil Wash 5 times with deionized water and ethanol respectively;

[0046] (3) Put the molybdenum foil treated in step (2) in...

Embodiment 2

[0054] A method for preparing a copper-cobalt-sulfur nanosheet array / molybdenum foil composite material, comprising the following steps:

[0055] (1) Sonicate the molybdenum foil with a size of 1cm×4cm with deionized water and ethanol for 5 minutes respectively to clean the surface dirt, and then vacuum-dry the cleaned molybdenum foil at 60°C for 5h, and set aside.

[0056] (2) Weigh 1mmol cobalt nitrate hexahydrate, 0.5mmol copper nitrate trihydrate and 3mmol urea, add 50mL deionized water successively, stir until the three are completely dissolved, and obtain a uniform solution; transfer the solution to a tetrafluoroethylene-lined Put the molybdenum foil treated in step (1) into the solution in the high-pressure reactor, close the reactor, put it in a blast oven, and heat it at a constant temperature for 5 hours at 120°C; after the reaction is completed, take out the molybdenum foil Wash 5 times with deionized water and ethanol respectively;

[0057] (3) Put the molybdenum ...

Embodiment 3

[0062] A method for preparing a copper-cobalt-sulfur nanosheet array / molybdenum foil composite material, comprising the following steps:

[0063] (1) Sonicate the molybdenum foil with a size of 2cm×4cm for 5 minutes with deionized water and ethanol respectively to clean the surface dirt, and then vacuum-dry the cleaned molybdenum foil at 60°C for 5h, and set aside.

[0064] (2) Weigh 4.5mmol cobalt nitrate hexahydrate, 1.5mmol copper nitrate trihydrate and 5mmol urea, add 50mL deionized water in turn, stir until the three are completely dissolved, and obtain a uniform solution; transfer the solution to the tetrafluoroethylene lining Put the molybdenum foil treated in step (1) into the solution, close the reaction kettle, put it into a blast oven, and heat it at a constant temperature for 8 hours at 80°C; after the reaction, take out the molybdenum foil Wash 5 times with deionized water and ethanol respectively;

[0065] (3) Put the molybdenum foil treated in step (2) into a m...

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Abstract

The invention provides a copper-cobalt-sulfur nanosheet array / molybdenum foil composite material and a preparation method and application thereof. The preparation method comprises the following steps:subjecting urea, a soluble cobalt salt and a copper salt solution to a constant-temperature heating reaction and calcination so as to allow a nanosheet array consisting of CuCo2O4 nanowires to grow on a molybdenum foil substrate; then, with water as a solvent and thioacetamide as a sulfur source, preparing the CuCo2O4 nanosheet array / molybdenum foil composite material composed of particles. According to the invention, the catalytic sites of the material are increased, the contact area of an electrode material and an electrolyte is expanded, and the conductivity of the material are effectivelyincreased, so the prepared copper-cobalt-sulfur nanosheet array / molybdenum foil composite material has good catalysis performance in the reaction of water electrolysis for hydrogen evolution. Compared with the prior art, the invention has the following advantages: preparation process is simple; the catalyst serving as a catalyst for the water electrolysis hydrogen evolution reaction is excellentin performance; and the catalyst can be used for catalyzing the hydrogen evolution reaction in both acidic and alkaline environments and has good practical application value.

Description

technical field [0001] The invention relates to the field of preparation of micro-nano materials, in particular to a CuCo 2 S 4 Nanosheet array / molybdenum foil composite material, preparation method and its application as a catalyst for hydrogen evolution reaction in electrosplitting water. Background technique [0002] Over the years, the extensive use of fossil fuels in the world has brought very serious environmental problems to people. For example, smog, acid rain, and global warming are all related to the long-term and extensive use of fossil fuels. In addition, fossil fuels such as coal, natural gas and petroleum are non-renewable energy sources because they are difficult to regenerate in a short period of time, so human beings will inevitably face the problem of fossil fuel depletion in the near future. Therefore, the development of efficient, clean and renewable energy has become an urgent task for the scientific community in the 21st century. [0003] Among vari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/885C25B11/06C25B1/04
CPCB01J23/885C25B11/04C25B1/04Y02E60/36
Inventor 王伟智吴俊瑶但德鑫李慰仇鑫
Owner ANHUI NORMAL UNIV
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