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One-dimensional cobalt-sulfur compound/cuprous sulfide compound nano array @ foam copper material as well as preparation method and application thereof

A technology of cobalt-sulfur compound and cuprous sulfide, applied in chemical instruments and methods, chemical/physical process, physical/chemical process catalyst, etc., can solve the problems of small catalytic active area, low catalytic performance, limited use effect, etc. To achieve the effect of simple equipment and process, improved catalytic performance and convenient operation

Active Publication Date: 2020-01-21
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 poor catalytic activity due to their small catalytic active area, and most single-component transition metal sulfides have low catalytic performance, which limits the actual use effect.

Method used

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  • One-dimensional cobalt-sulfur compound/cuprous sulfide compound nano array @ foam copper material as well as preparation method and application thereof
  • One-dimensional cobalt-sulfur compound/cuprous sulfide compound nano array @ foam copper material as well as preparation method and application thereof
  • One-dimensional cobalt-sulfur compound/cuprous sulfide compound nano array @ foam copper material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A preparation method of one-dimensional cobalt-sulfur compound / cuprous sulfide composite nano-array@foam copper material includes the following steps:

[0050] (1) Wash the foamed copper with a size of 1cm×4cm with deionized water and ethanol for 5 times respectively, and dry the washed foamed copper in vacuum for use.

[0051] (2) Add 3mmol of cobalt chloride hexahydrate and 15mmol of urea into 30mL of deionized water and stir to dissolve to obtain a clear mixed solution; transfer the mixed solution to a high pressure reactor lined with tetrafluoroethylene, and then put it into step ( 1) After drying the foamed copper, seal the reaction kettle, put it in an electric heating constant temperature blast drying box, and heat it for 5 hours at 160°C;

[0052] (3) Take out the foamed copper after the reaction in step (2), wash it with ethanol and deionized water for 5 times, then put it in a vacuum drying oven, and dry it at 65°C for 5 hours to obtain the foamed copper loaded one-d...

Embodiment 2

[0060] A preparation method of one-dimensional cobalt-sulfur compound / cuprous sulfide composite nano-array@foam copper material includes the following steps:

[0061] (1) Wash the foamed copper with a size of 1cm×4cm with deionized water and ethanol for 6 times respectively, and dry the washed foamed copper in vacuum for use.

[0062] (2) Add 3mmol of cobalt nitrate hexahydrate and 6mmol of urea into 30mL of deionized water and stir to dissolve to obtain a clear mixed solution; transfer the mixed solution to a high pressure reactor lined with tetrafluoroethylene, and then put it into step (1 ) After drying the foamed copper in the middle, seal the reaction kettle, put it in an electric heating constant temperature blast drying box, and heat it at a constant temperature at 140°C for 6 hours;

[0063] (3) Take out the foamed copper after the reaction in step (2), wash it with ethanol and deionized water for 5 times, then put it in a vacuum drying oven, and dry it at 65°C for 5 hours to...

Embodiment 3

[0068] A preparation method of one-dimensional cobalt-sulfur compound / cuprous sulfide composite nano-array@foam copper material includes the following steps:

[0069] (1) Wash the foamed copper with a size of 2cm×4cm with deionized water and ethanol for 5 times respectively, and dry the washed foamed copper in vacuum for use.

[0070] (2) Add 8mmol of cobalt chloride hexahydrate and 16mmol of urea into 40mL of deionized water and stir to dissolve to obtain a clear mixed solution; transfer the mixed solution to a high pressure reactor lined with tetrafluoroethylene, and then put it into the step ( 1) After drying the foamed copper, seal the reaction kettle, put it in an electric heating constant temperature blast drying box, and heat it at a constant temperature of 120°C for 7 hours;

[0071] (3) Take out the foamed copper after the reaction in step (2), wash it with ethanol and deionized water for 6 times, then put it in a vacuum drying oven, and dry it at 65°C for 5 hours to obtain ...

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Abstract

The invention provides a one-dimensional cobalt-sulfur compound / cuprous sulfide compound nano array @ foam copper material as well as a preparation method and application thereof. The preparation method includes: dissolving urea and soluble cobalt salt in water, and performing constant-temperature heating reaction to generate a Co precursor material with a one-dimensional array structure, which can grow on the foam copper substrate; then adding the one-dimensional Co9S8 / Cu2S compound nano array into an N,N-dimethylformamide solvent to react with mercaptoacetic acid, thereby obtaining the one-dimensional Co9S8 / Cu2S compound nano array @ foam copper material. Compared with the prior art, the one-dimensional Co9S8 / Cu2S compound nano array @ foam copper material is prepared through a liquid phase method, so that the method is convenient in operation and simple in equipment and process; the influence of the environment is small, and large-scale production is easy; the obtained one-dimensional Co9S8 / Cu2S compound nano array @ foam copper material shows excellent catalytic water electrolysis hydrogen evolution reaction performance in both acidic and alkaline environments, and has a goodpractical application prospect.

Description

Technical field [0001] The invention belongs to the field of material preparation, and specifically relates to a one-dimensional cobalt-sulfur compound / cuprous sulfide composite nano-array @foam copper material, and a preparation method and application thereof. Background technique [0002] Since the last century, energy and environmental issues have become a global focus. With the tremendous changes brought about by the industrial revolution to mankind’s production and life, energy consumption has increased sharply, while the proven fossil fuel reserves have become less and less. And the use of a large number of fossil fuels has brought numerous environmental problems, such as the global greenhouse effect, soil acid-base imbalance and air pollution, which have destroyed the natural environment on which humans depend. Therefore, the development of a rich and clean new energy source has become an urgent issue for scientists worldwide. [0003] Hydrogen has many advantages, such as...

Claims

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Application Information

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IPC IPC(8): B01J27/043C25B11/06C25B1/04
CPCB01J27/043C25B11/04C25B1/04Y02E60/36
Inventor 王伟智李慰但德鑫吴俊瑶
Owner ANHUI NORMAL UNIV