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Co-Se compound nanotube@ foam Ni composite array material as well as preparation method and application thereof

A technology of selenium compounds and composite arrays, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problem of low catalytic activity, improve catalytic performance, increase electron transfer rate, and reduce overheating. The effect of potential

Pending Publication Date: 2018-12-14
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalytic activity of bulk transition metal selenides is low, while nanostructured transition metal selenides can show obvious catalytic performance for hydrogen evolution in water electrolysis.

Method used

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  • Co-Se compound nanotube@ foam Ni composite array material as well as preparation method and application thereof
  • Co-Se compound nanotube@ foam Ni composite array material as well as preparation method and application thereof
  • Co-Se compound nanotube@ foam Ni composite array material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of Co 9 Se 8 The preparation method of nanotube@foam nickel composite array material comprises the following steps:

[0040] A. Weigh 2mmol cobalt chloride hexahydrate and 12mmol urea, add 30ml deionized water and stir until dissolved to obtain a clear and transparent solution; transfer the solution to a reaction kettle lined with tetrafluoroethylene, and put it into a 1cm×4cm Nickel foam, after closing the reactor, put it into a constant temperature box, and heat it at 90°C for 10h;

[0041] B. Take out the nickel foam after the reaction in step A, wash it several times with ethanol and deionized water, put it in a vacuum drying oven, and dry it at 65°C for 8 hours to obtain the product of the nickel foam supported cobalt precursor: Co precursor @ foam nickel composite material;

[0042] C. Take 5mmol of selenium powder and add it to 10ml of hydrazine hydrate, stir until dissolved, then add this mixture to 300ml of deionized water, stir and mix evenly; transf...

Embodiment 2

[0050] A kind of Co 9 Se 8 The preparation method of nanotube@foam nickel composite array material comprises the following steps:

[0051] A. Weigh 2.5mmol cobalt chloride hexahydrate and 16mmol urea, add 35ml deionized water and stir until dissolved to obtain a clear and transparent solution; 4cm of nickel foam, after closing the reactor, put it into the incubator, and heat it at 110°C for 8h;

[0052] B. Take out the nickel foam after the reaction in step A, wash it several times with ethanol and deionized water, put it in a vacuum drying oven, and dry it at 65°C for 8 hours to obtain the product of the nickel foam supported cobalt precursor: Co precursor @ foam nickel composite material;

[0053] C. Take 8mmol of selenium powder and add it to 10ml of hydrazine hydrate, stir until dissolved, then add this mixture to 300ml of deionized water, stir and mix evenly; transfer the resulting solution to a polytetrafluoroethylene-lined reactor , put the Co precursor@foam nickel ...

Embodiment 3

[0058] A kind of Co 9 Se 8 The preparation method of nanotube@foam nickel composite array material comprises the following steps:

[0059] A. Weigh 3mmol cobalt chloride hexahydrate and 18mmol urea, add 40ml deionized water and stir until dissolved to obtain a clear and transparent solution; transfer the solution to a reaction kettle lined with tetrafluoroethylene, and put it into a 1cm×4cm Nickel foam, after closing the reactor, put it into the incubator, and heat it at 140°C for 6 hours;

[0060] B. Take out the nickel foam after the reaction in step A, wash it several times with ethanol and deionized water, put it in a vacuum drying oven, and dry it at 65°C for 8 hours to obtain the product of the nickel foam supported cobalt precursor: Co precursor @ foam nickel composite material;

[0061] C. Take 10mmol of selenium powder and add it to 10ml of hydrazine hydrate, stir until dissolved, then add this mixture to 300ml of deionized water, stir and mix evenly; transfer the ...

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Abstract

The invention discloses a Co-Se compound nanotube@ foam Ni composite array material as well as a preparation method and an application thereof. The method comprises the following steps: firstly, Co salt and urea are dissolved in deionized water, foam Ni is added, and a Co precursor@ foam Ni composite is prepared through a hydrothermal reaction; then a Se source is dissolved in hydrazine hydrate, the obtained solution is mixed with deionized water, the Co precursor@ foam Ni composite is added, and the Co9Se8 nanotube@ foam Ni composite array material is obtained through a hydrothermal reaction.The raw materials and process equipment are simple, the preparation cost is low, the product yield is high, and the prepared composite is a 1D hollow-structured Co9Se8 nanotube array directly growingon a foam Ni substrate with good electrical conductivity, can directly serve as an electrode material to be applied to catalysis of water electrolysis for a hydrogen evolution reaction, shows excellent catalytic performance and has huge potential application value in the field of water electrolysis for hydrogen production.

Description

technical field [0001] The invention relates to the technical field of preparation of micro-nano materials, in particular to a cobalt-selenium compound nanotube@foam nickel composite array material and its preparation method and application. Background technique [0002] With the continuous increase of global fossil fuel consumption, people have brought very serious environmental problems. For example, smog, the warming global climate, etc. are all the impacts of long-term and large-scale use of fossil fuels. In addition, fossil fuels such as coal, natural gas and petroleum are also facing the problem of depletion due to the difficulty of regeneration in a short period of time. Therefore, the development of efficient, clean and renewable energy has become an urgent task for the scientific community in the 21st century. Among various sustainable energy sources, hydrogen is considered as one of the most promising candidates to replace traditional fossil fuels in the future. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057C25B1/04C25B11/06B01J35/02B01J35/00
CPCC25B1/04C25B11/04B01J27/0573B01J35/33B01J35/40Y02E60/36
Inventor 王伟智但德鑫汪欣欣
Owner ANHUI NORMAL UNIV
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