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Copper oxide-gold nano composite material, preparation method and application thereof

A composite material and copper oxide technology, which is applied in the direction of oxidized water/sewage treatment, etc., can solve the problems such as the degradation effect of gold nanoparticles that have not been specifically disclosed, and achieve the effect of improving stability and dispersibility

Inactive Publication Date: 2015-06-24
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it did not specifically disclose the degradation effect of the gold nanoparticles on organic dyes

Method used

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  • Copper oxide-gold nano composite material, preparation method and application thereof
  • Copper oxide-gold nano composite material, preparation method and application thereof
  • Copper oxide-gold nano composite material, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0060] In this embodiment, copper oxide-gold nanocomposites are prepared by the following method, which specifically includes the following steps:

[0061] (1) preparing an aqueous solution of gold nanoparticles;

[0062] a. Add 200μL 25mmol / L chloroauric acid solution into 1mL 0.01g / mL sodium citrate solution, and stir evenly;

[0063]B, in the mixed solution of step a, add 800 μ L dropwise the sodium borohydride solution that contains 0.01g / mL sodium citrate, wherein the concentration of sodium borohydride solution is 20mmol / L (the mol ratio of sodium borohydride and chloroauric acid is 3.2:1), reacted for 2h under stirring at room temperature;

[0064] c. After the reaction is finished, centrifuge and disperse the lower layer of precipitate in deionized water to obtain the aqueous solution of gold nanoparticles;

[0065] (2) preparing copper oxide nanosheets;

[0066] A. Add 732mg of copper sulfate pentahydrate and 0.5g of surfactant cetyltrimethylammonium bromide into 1...

Embodiment 2

[0073] The only difference from Example 1 is that no mercaptopolyethylene glycol is added for the reaction in step (3), and other preparation steps and reaction conditions are the same as in Example 1, and a copper oxide-gold nanocomposite is also prepared.

Embodiment 3

[0075] In this embodiment, copper oxide-gold nanocomposites are prepared by the following method, which specifically includes the following steps:

[0076] (1) preparing an aqueous solution of gold nanoparticles;

[0077] a. Add 200 μL 25mmol / L chloroauric acid solution into 5mL 0.005g / mL sodium citrate solution, and stir evenly;

[0078] B, in the mixed solution of step a, add 800 μ L dropwise the sodium borohydride solution that contains 0.005g / mL sodium citrate, wherein the concentration of sodium borohydride solution is 20mmol / L (the mol ratio of sodium borohydride and chloroauric acid is 3.2:1), reacted for 2h under stirring at room temperature;

[0079] c. After the reaction is finished, centrifuge and disperse the lower layer of precipitate in deionized water to obtain the aqueous solution of gold nanoparticles;

[0080] (2) preparing copper oxide nanosheets;

[0081] A. Add 700mg of copper nitrate trihydrate and 0.2g of surfactant cetyltrimethylammonium bromide to 1...

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PUM

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Abstract

The invention provides a copper oxide-gold nano composite material, a preparation method and an application thereof. The copper oxide-gold nano composite material is prepared by uniformly dispersing gold nano particles on a copper oxide nano sheet. The preparation method of the copper oxide-gold nano composite material comprises the following steps: optionally adding thiol-polyethylene glycol into an aqueous solution of the gold nano particles, then adding the copper oxide nano sheet, and performing self-assembling by virtue of the electrostatic interaction and the adsorption effect of the nano sheet to obtain the copper oxide-gold nano composite material. The preparation process is simple, the operability is high, the requirement for equipment is low, the prepared copper oxide-gold nano composite material is high in catalytic activity, the degradation rate of organic dye methylene blue can be remarkably improved, the time for complete degradation can be shortened, and the copper oxide-gold nano composite material has capacity for high-efficiently catalytically degrading organic dye.

Description

technical field [0001] The invention belongs to the field of preparation of copper oxide nanocomposite materials, and relates to a copper oxide-gold nanocomposite material, its preparation method and application. Background technique [0002] With the continuous improvement of the quality of life, people pay more and more attention to the quality of the environment. The pollution of organic dyes in real life has constituted a major threat to the environment and has become a major problem in environmental governance; therefore, the treatment of dye pollution in wastewater is a problem that needs to be solved urgently. Methylene blue is a typical polluting dye in wastewater. Methylene blue can be used as dyeing agent, coloring agent and chemical reagent. It is used in a large amount in production and life, resulting in extremely high content in discharged sewage, causing serious pollution to the environment, and because methylene blue itself is not easy to be biodegraded, it ...

Claims

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Application Information

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IPC IPC(8): B01J23/89C02F1/72
Inventor 王新环杨蓉王琛韩秋森
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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