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Mesoporous nanosheet structure ferronickel selenide material and preparing method and application thereof

A technology of nickel-ironselenide and nanosheets, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc. It can solve the problems of poor catalytic performance, high oxygen evolution overpotential, and low active sites and other problems, to achieve the effect of being conducive to market promotion, excellent oxygen evolution performance, and large specific surface area

Active Publication Date: 2016-05-25
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its low electronic conductivity and low active sites lead to high oxygen evolution overpotential, which makes its own catalytic performance not very good.

Method used

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  • Mesoporous nanosheet structure ferronickel selenide material and preparing method and application thereof
  • Mesoporous nanosheet structure ferronickel selenide material and preparing method and application thereof
  • Mesoporous nanosheet structure ferronickel selenide material and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of the mesoporous nano sheet structure nickel-iron selenide material supported on the carbon fiber cloth comprises the following steps:

[0030] 1) Add 0.75mmolNi(NO 3 ) 2 ·6H 2 O, 0.25mmolFe(NO 3 ) 3 9H 2 O, 3mmolNH 4 F and 5mmolCO(NH 2 ) 2 Dissolve in 24mL water and 12mL ethylene glycol mixed solution and stir for 30min;

[0031] 2) Set the size to 8cm 2 The carbon fiber cloth was added to the solution obtained in step 2), soaked for 30 minutes, then moved to a 50mL reaction kettle, and heated in water at 120°C for 12 hours;

[0032] 3) Take out the carbon fiber cloth in step 2), wash it twice with deionized water and absolute ethanol respectively, and dry it in an oven at 70°C;

[0033] 4) Mix 0.5mmol selenium powder, 1mmolNaBH 4 Dissolve in 36mL water and stir for 30min;

[0034] 5) Add the carbon fiber cloth dried in step 3) to the solution obtained in step 4), move it to a 50mL reaction kettle, and heat it in water at 180°C for 2...

Embodiment 2

[0039] The preparation method of the mesoporous nano sheet structure nickel-iron selenide material supported on the carbon fiber cloth comprises the following steps:

[0040] 1) Add 0.6mmolNi(NO 3 ) 2 ·6H 2 O, 0.20mmolFe(NO 3 ) 3 9H 2 O, 2 mmol NH 4 F and 5mmolCO(NH 2 ) 2 Dissolve in 20mL water and 16mL ethylene glycol mixed solution and stir for 20min;

[0041] 2) Set the size to 8cm 2 The carbon fiber cloth was added to the solution obtained in step 2), soaked for 20 minutes, then moved to a 50mL reaction kettle, and heated in water at 120°C for 9 hours;

[0042] 3) Take out the carbon fiber cloth in step 2), wash it twice with deionized water and absolute ethanol, and dry it in an oven at 65°C;

[0043] 4) Mix 0.4mmol selenium powder, 0.8mmolNaBH 4 Dissolve in 36mL water and stir for 20min;

[0044] 5) Add the carbon fiber cloth dried in step 3) to the solution obtained in step 4), move it to a 50mL reaction kettle, and heat it in water at 180°C for 24 hours to ...

Embodiment 3

[0047] The preparation method of the mesoporous nano sheet structure nickel-iron selenide material supported on the carbon fiber cloth comprises the following steps:

[0048] 1) 0.66mmolNi(NO 3 ) 2 ·6H 2 O, 0.33mmolFe(NO 3 ) 3 9H 2 O, 3mmolNH 4 F and 4mmolCO(NH 2 ) 2 Dissolve in 10mL water and 26mL ethylene glycol mixed solution and stir for 30min;

[0049] 2) Set the size to 8cm 2 The carbon fiber cloth was added to the solution obtained in step 2), soaked for 30 minutes, then moved to a 50mL reaction kettle, and heated in water at 120°C for 10 hours;

[0050] 3) Take out the carbon fiber cloth in step 2), wash it twice with deionized water and absolute ethanol, and dry it in an oven at 65°C;

[0051] 4) Mix 0.3mmol selenium powder, 0.6mmolNaBH 4 Dissolve in 36mL water and stir for 30min;

[0052] 5) Add the carbon fiber cloth dried in step 3) to the solution obtained in step 4), move it to a 50mL reaction kettle, and heat it in water at 180°C for 18 hours to obta...

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Abstract

The invention relates to a mesoporous nanosheet structure ferronickel selenide material supported on carbon fiber cloth and a preparing method. The mesoporous nanosheet structure ferronickel selenide material can serve as a brine electrolysis catalytic oxygen evolution active material, ferronickel selenide mesoporous nanosheets are staggered and linked on carbon nanofibers to form a three-dimensional network structure, the ferronickel selenide mesoporous nanosheets are 1-3 micrometers long and 25-45 nanometers thick, and the diameter of the carbon nanofibers is 10-13 micrometers. The mesoporous nanosheet structure ferronickel selenide material has the advantages that the mesoporous nanosheet structure ferronickel selenide material supported on the carbon fiber cloth and serving as an oxygen evolution electrode has excellent catalytic activity and stability and is a potential application material for a high-catalytic-performance brine electrolysis catalytic oxygen evolution catalyst. The reaction conditions are mild, based on the unique advantages of a mesoporous structure and selenide, a controllable secondary hydrothermal method is adopted, and by changing the hydrothermal time, the mesoporous material supported on the carbon fiber cloth is prepared and meets the requirement of green chemistry; the requirement for equipment is low, which is beneficial for marketization popularization.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and electrochemical catalysis, and specifically relates to a mesoporous nanosheet structure nickel-iron selenide material supported on carbon fiber cloth and a preparation method thereof, which can be used as a low overpotential and high stability electrolytic water catalyst Oxygen evolution active material. Background technique [0002] With the depletion of fossil fuels and the environmental problems it brings, people urgently need to use fossil fuels more effectively and develop clean and cheap new energy. Hydrogen stands out in the development of new energy due to its abundant reserves, cleanliness, high efficiency, convenient transportation, and environmental friendliness. The raw materials for hydrogen production are mainly hydrocarbons (coal coke, light oil, natural gas) and water, methanol, ethanol, etc. Water is used in hydrogen production research due to its high hydrogen content,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J35/10C25B1/04C25B11/06
CPCC25B1/04B01J27/0573C25B11/075B01J35/60Y02E60/36
Inventor 麦立强王兆阳李坚涛何亮
Owner WUHAN UNIV OF TECH
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