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Preparation method of CuO/Cu2O/Cu ternary composite material

A technology of composite materials and mixed liquids, applied in the direction of catalyst activation/preparation, nanotechnology for materials and surface science, chemical instruments and methods, etc., can solve problems such as inability to meet photocatalytic performance requirements, and achieve short synthesis cycle, The effect of simple process

Active Publication Date: 2019-08-23
HUNAN UNIV OF HUMANITIES SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of CuO / Cu 2 The preparation method of O / Cu ternary composite material, to solve the CuO / Cu prepared in the prior art 2 O / Cu ternary composites can not meet the technical problems of photocatalytic performance requirements

Method used

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  • Preparation method of CuO/Cu2O/Cu ternary composite material
  • Preparation method of CuO/Cu2O/Cu ternary composite material
  • Preparation method of CuO/Cu2O/Cu ternary composite material

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preparation example Construction

[0023] The invention provides a CuO / Cu 2 The preparation method of the O / Cu ternary composite material comprises the following steps: S1, respectively preparing copper salt solution and lye; S2, taking yeast and adding it to water for cultivation, and adding it to the copper salt solution and lye successively after cultivation to obtain a mixed solution ; S3, the mixed solution is heated and reacted to obtain the reaction solution; S4, the reaction solution is dried and then calcined and cooled to room temperature, and then calcined again to obtain CuO / Cu 2 O / Cu ternary composite material.

[0024] In order to prepare CuO / Cu with good charge separation structure, visible light absorption characteristics and reactive active sites 2 O / Cu ternary composite materials, technicians have done a lot of research, such as combining a surface plasmon resonance co-catalyst on the surface of the ternary composite material, which can effectively inhibit the recombination of photogenerated ...

Embodiment 1

[0036] CuO / Cu in this embodiment 2 The preparation method of O / Cu ternary composite material comprises the following steps:

[0037] S1, 2.5g of analytically pure copper sulfate pentahydrate (CuSO 4 "5H 2 O) add 20mL deionized water to prepare a copper sulfate solution with a concentration of 0.5mol / L. Dissolve 0.8 g of analytically pure sodium hydroxide in 20 mL of deionized water to prepare a 1.0 mol / L sodium hydroxide solution.

[0038] S2. Add 2.0 g of yeast powder to 20 mL of deionized water and cultivate for 30 minutes. After the cultivation, add it to the copper sulfate solution, and then gradually add the above mixed solution to the sodium hydroxide alkali solution to obtain a mixed solution.

[0039] S3. Put the mixed solution obtained in step S2 in a microwave reactor, and react at a temperature of 80° C. for 5 minutes to obtain a reaction solution.

[0040] S4. The reaction solution was centrifuged at 5000 rpm and dried in a drying oven at 80° C. for 12 hours. ...

Embodiment 2

[0043] CuO / Cu in this embodiment 2 The preparation method of O / Cu ternary composite material comprises the following steps:

[0044] S1, 2.5g of analytically pure copper sulfate pentahydrate (CuSO 4 "5H 2 O) add 20mL deionized water to prepare a copper sulfate solution with a concentration of 0.5mol / L. Dissolve 0.8 g of analytically pure sodium hydroxide in 20 mL of deionized water to prepare a 1.0 mol / L sodium hydroxide solution.

[0045] S2. Add 2.5g of yeast powder to 20mL of deionized water and cultivate for 40min. After the cultivation, add it to the copper sulfate solution, and then gradually add the above mixed solution to the sodium hydroxide alkali solution to obtain a mixed solution.

[0046] S3. Put the mixed solution obtained in step S2 in a microwave reactor, and react at a temperature of 70° C. for 8 minutes to obtain a reaction solution.

[0047] S4. The reaction solution was centrifuged at 5000 rpm and dried in a drying oven at 80° C. for 12 hours. After t...

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Abstract

The invention provides a preparation method of a CuO / Cu2O / Cu ternary composite material. The preparation method comprises following steps: a copper salt solution and an alkali solution are prepared respectively; yeast is added into water for culturing, after culturing, the copper salt solution and the alkali solution are added successively so as to obtain a mixed solution; the mixed solution is subjected to heating reaction so as to obtain a reaction solution; the reaction solution is dried, is calcined, and is cooled to room temperature, and is calcined for another time so as to obtain the CuO / Cu2O / Cu ternary composite material. According to the preparation method of the CuO / Cu2O / Cu ternary composite material, yeast is taken as a micro chemical reactor, in carbon thermal reduction synthesis process, yeast is taken as a carbon source, and is capable of regulating and controlling precursor morphology; the technology is simple; and the synthesis period is short.

Description

technical field [0001] The invention relates to the technical field of preparation of composite materials, in particular to a CuO / Cu 2 The preparation method of O / Cu ternary composite material. Background technique [0002] With the increasingly severe ecological and environmental crisis, exploring multiphase composite materials that can reduce environmental pollution has become a research hotspot in the fields of information, electronics and photocatalysis. Among pollutant removal methods, photocatalytic degradation can directly convert pollutants into carbon dioxide and water, which has obvious advantages. During the photocatalytic degradation process, the irradiation source plays an important role in enhancing the activity of the catalyst. Most of the traditional photocatalytic reactors use expensive ultraviolet light sources, which are considered uneconomical light sources due to their high energy consumption, instability, low mechanical stability, short service life, ...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J37/36B82Y30/00B82Y40/00
CPCB01J23/72B01J37/36B82Y30/00B82Y40/00B01J35/39
Inventor 田修营文瑾刘鑫陈占军胡继林
Owner HUNAN UNIV OF HUMANITIES SCI & TECH
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