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Graphene-supported copper-nickel composite nanometer photocatalyst, and preparation method and application thereof

A nano-photocatalyst and photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of Ni-based bimetal composite nanoparticle synthesis Reporting and other issues, to achieve the effect of easy operation, good development prospects and high purity

Inactive Publication Date: 2014-09-10
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, effectively controlling the structure and composition of bimetals on the surface of graphene is still a research difficulty
Since monodisperse Ni nanoparticles are difficult to obtain by reducing their metal salts with common reducing agents, the synthesis of Ni-based bimetallic composite nanoparticles has rarely been reported.

Method used

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  • Graphene-supported copper-nickel composite nanometer photocatalyst, and preparation method and application thereof
  • Graphene-supported copper-nickel composite nanometer photocatalyst, and preparation method and application thereof
  • Graphene-supported copper-nickel composite nanometer photocatalyst, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take 100mg of solid graphite oxide and add it to 25ml of ethanolamine, magnetically stir and ultrasonically disperse at room temperature for 30min each; then add 100ml of deionized water, continue magnetically stirring for 24h, and wash the solution centrifugally to remove excess ethanolamine; each measure 50ml of Cu( NO 3 ) 2 (6mmol / L) and Ni(NO 3 ) 2 (6mmol / L) ethylene glycol solution was added to the above-mentioned graphene oxide, and then NaOH with a concentration of 0.1 g / L was added to adjust the pH value to 4, magnetically stirred for 30min under the temperature of a water bath at 80°C, and magnetically stirred to the solution at the same time Nitrogen was introduced into the solution to remove the dissolved oxygen in the solution; the mixed solution was quickly transferred to a stainless steel reaction kettle with a polytetrafluoroethylene liner, and the reaction kettle was reacted at a constant temperature of 80°C for 0.5h; naturally cooled to room temperat...

Embodiment 2

[0025] Take 100mg of solid graphite oxide and add it to 25ml of polyvinyl alcohol, magnetically stir and ultrasonically disperse at room temperature for 60 minutes each; then add 100ml of deionized water, continue to magnetically stir for 24 hours, and wash the solution centrifugally to remove excess polyvinyl alcohol; Take 50mlCu(NO 3 ) 2 (12mmol / L) and Ni(NO 3 ) 2 (12mmol / L) ethylene glycol solution was added to the above-mentioned graphene oxide, and then NaOH with a concentration of 1.2g / L was added to adjust the pH value to 13, and magnetic stirring was carried out for 80min under the temperature condition of 120°C water bath, and the magnetic stirring was added to the solution at the same time Nitrogen was introduced into the solution to remove dissolved oxygen in the solution; the mixed solution was quickly transferred to a stainless steel reaction kettle with a polytetrafluoroethylene liner, and the reaction kettle was reacted at a constant temperature of 80°C for 1...

Embodiment 3

[0027] Take 100mg of solid graphite oxide and add it to 25ml of ethylenediamine, magnetically stir and ultrasonically disperse at room temperature for 30min each; then add 100ml of deionized water, continue magnetically stirring for 24h, and centrifuge the solution to remove excess ethylenediamine; Take 50mlCu(NO 3 ) 2 (8mmol / L) and Ni(NO 3 ) 2 (8mmol / L) ethylene glycol solution was added to the above-mentioned graphene oxide, and then NaOH with a concentration of 0.8g / L was added to adjust the pH to 13, magnetically stirred for 120min under the temperature of a water bath at 100°C, and magnetically stirred to the solution at the same time Nitrogen was introduced into the solution to remove dissolved oxygen in the solution; the mixed solution was quickly transferred to a stainless steel reaction kettle with a polytetrafluoroethylene liner, and the reaction kettle was reacted at a constant temperature of 120°C for 0.5h; naturally cooled to room temperature, the obtained prod...

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Abstract

The invention discloses a graphene-supported copper-nickel composite nanometer photocatalyst, and a preparation method and application thereof. Oxidized graphene modified by an organic molecule and a metal precursor are subjected to thermal recovery under an alkaline and high temperature environment so as to obtain highly disperse and uniform Cu-Ni / graphene composite nanomaterial without using other surface active agents, and poisonous reducing agents such as sodium borohydride and hydrazine hydrate, and duplex-metal loading capacity is 10-15wt%. The preparation method provided by the invention has the advantages that a reaction condition is gentle, a synthetic process is simple and easy to operate, a reaction medium is green and the like, the synthetized product is capable of efficiently performing catalytic degradation on rhodamine b, and the graphene-supported copper-nickel composite nanometer photocatalyst has a good catalytic effect, and has a wide application prospect in fields such as sewage treatment and organic matter degradation.

Description

technical field [0001] The invention belongs to the technical field of preparation of catalyst nanomaterials, and in particular relates to a graphene-loaded copper-nickel bimetal composite nanophotocatalyst and a preparation method thereof. Background technique [0002] With the rapid economic growth and the rapid advancement of industrialization, the safety of drinking water caused by organic pollutants has become a matter of great concern to the current water treatment industry. A large number of organic substances and their precursors have carcinogenic and teratogenic effects, directly or indirectly threatening human health. Photocatalyst has a strong redox ability and has broad application prospects in the fields of environmental purification and organic degradation. [0003] In the field of catalysis, graphene can be used as an ideal carrier for catalysts due to its excellent electrical conductivity, thermal conductivity and structural stability, and its application in...

Claims

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Application Information

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IPC IPC(8): B01J23/755C02F1/30
Inventor 姚淑娟陈玉岭李素文杨萌萌蒲锡鹏贾正峰班朝磊
Owner LIAOCHENG UNIV
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