Porous nano-sheet structure copper-nickel nitride material, preparation method and applications thereof

A nanosheet and nitride technology, applied in chemical instruments and methods, chemical/physical processes, inorganic chemistry, etc., can solve the problems of hydrogen evolution and oxygen evolution overpotentials that need to be further improved, and achieve excellent electrolysis water hydrogen production performance, excellent Durability, mild reaction conditions effect

Active Publication Date: 2019-08-09
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Transition metal nitrides, such as nickel nitride, are intermetallic compounds with high electronic conductivity and certain catalytic activity for electrolysis of water, but their hydrogen evolution and oxygen evolution overpotentials need to be further improved

Method used

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  • Porous nano-sheet structure copper-nickel nitride material, preparation method and applications thereof
  • Porous nano-sheet structure copper-nickel nitride material, preparation method and applications thereof
  • Porous nano-sheet structure copper-nickel nitride material, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a porous nanosheet structure copper-nickel nitride material supported on carbon fiber cloth, comprising the steps of:

[0029] 1) 1.0mmol Cu(NO 3 ) 2 ·3H 2 O, 2.0mmol Ni(NO 3 ) 2 ·6H 2 O and 5mmol hexamethylenetetramine were dissolved in 60mL methanol solvent and stirred for 20min;

[0030] 2) Set the size to 10cm 2 The carbon fiber cloth was added to the solution obtained in step 2), soaked for 30 minutes, then moved to a 100mL reaction kettle, and heated in water at 180°C for 12 hours;

[0031] 3) Take out the carbon fiber cloth in step 2), wash it three times with deionized water and absolute ethanol, and dry it in an oven at 65°C;

[0032] 4) Put the carbon fiber cloth dried in step 3) in a corundum crucible and place it in a tube furnace with an ammonia gas flow rate of 20 sccm at 5°C min -1 Raise the temperature to 400°C and keep it warm for 2h. After the tube furnace is cooled, the carbon fiber cloth is taken out, and the porous na...

Embodiment 2

[0037] A method for preparing a porous nanosheet structure copper-nickel nitride material supported on carbon fiber cloth, comprising the steps of:

[0038] 1) 1.5mmol Cu(NO 3 ) 2 ·3H 2 O, 1.5mmol Ni(NO 3 ) 2 ·6H 2 O and 6mmol hexamethylenetetramine were dissolved in 70mL methanol solvent and stirred for 20min;

[0039] 2) Set the size to 10cm 2 The carbon fiber cloth was added to the solution obtained in step 2), soaked for 15 minutes, then moved to a 100mL reaction kettle, and heated in water at 180°C for 10 hours;

[0040] 3) Take out the carbon fiber cloth in step 2), wash it three times with deionized water and absolute ethanol, and dry it in an oven at 65°C;

[0041] 4) Put the carbon fiber cloth dried in step 3) in a corundum crucible and place it in a tube furnace with an ammonia gas flow rate of 50 sccm at 5°C min -1 Raise the temperature to 400°C and keep it warm for 2h. After the tube furnace is cooled, the carbon fiber cloth is taken out, and the porous na...

Embodiment 3

[0044] A method for preparing a porous nanosheet structure copper-nickel nitride material supported on carbon fiber cloth, comprising the steps of:

[0045] 1) Add 2mmol Cu(NO 3 ) 2 ·3H 2 O, 1mmol Ni(NO 3 ) 2 ·6H 2 O and 4mmol hexamethylenetetramine were dissolved in 65mL methanol solvent and stirred for 20min;

[0046] 2) Set the size to 10cm 2 The carbon fiber cloth was added to the solution obtained in step 2), soaked for 30 minutes, then moved to a 100mL reaction kettle, and heated in water at 180°C for 12 hours;

[0047] 3) Take out the carbon fiber cloth in step 2), wash it three times with deionized water and absolute ethanol, and dry it in an oven at 65°C;

[0048] 4) Put the carbon fiber cloth dried in step 3) in a corundum crucible and place it in a tube furnace with an ammonia gas flow rate of 40 sccm at 2°C min -1 Raise the temperature to 450°C and keep it warm for 2h. After the tube furnace is cooled, the carbon fiber cloth is taken out, and the porous na...

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Abstract

The invention relates to a porous nano-sheet structure copper-nickel nitride material and a preparation method thereof, wherein the material can be used as a bifunctional catalyst electrode for hydrogen production through hydrazine hydrate assisted electrolysis of water, is a porous copper-nickel nitride nano-sheet loaded on a carbon nanometer fiber base plate, and has an opening three-dimensionalnetwork structure formed by mutual cross-linking, the porous copper-nickel nitride nano-sheet has a length of 1-2 [mu] and a thickness of 8-15 nm, and the carbon nanometer fiber has a diameter of 9-15 [mu]m. According to the present invention, the material has advantages of large specific surface area, porous nano-sheet structure, excellent electronic conductivity, high catalytic active site andmild reaction conditions; based on the unique advantages of the porous structure and the copper-nickel nitride, the controlled solvothermal method and the subsequent ammonia gas pyrolysis are used; bychanging the calcination temperature, the gas flow rate, the heating rate and the like, the porous nano-sheet structure copper-nickel nitride material is prepared; and the method has low requirementson the equipment, and is suitable for market promotion.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and electrochemical catalytic hydrogen production, and specifically relates to a porous nanosheet structure copper-nickel nitride material and a preparation method thereof. The material can be used as a dual-functional catalyst electrode for hydrazine hydrate-assisted electrolysis of water to produce hydrogen . Background technique [0002] The use of fossil fuels such as coal, oil, and natural gas has brought about increasingly severe environmental problems. With the depletion of their resources, it is becoming more and more important to develop clean, cheap and renewable new energy. Hydrogen energy is a currently recognized clean energy. Hydrogen reserves are very rich, hydrogen energy is easy to transport and store, its combustion has a very high calorific value, and the product is pollution-free and does not contain carbon elements. These advantages make the research of hydrogen produc...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J32/00C01B3/04
CPCB01J27/24C01B3/04C01B3/042B01J35/40Y02E60/36
Inventor 麦立强王兆阳科乔·阿萨瑞·奥乌苏向彬华
Owner WUHAN UNIV OF TECH
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