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Preparation method of gold/copper selenide/cobalt-nickel layered double hydroxide composite paper

A hydroxide, copper selenide technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as affecting photocatalytic performance

Active Publication Date: 2020-10-20
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, photogenerated electrons and holes are very easy to recombine, which will greatly affect its photocatalytic performance.

Method used

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  • Preparation method of gold/copper selenide/cobalt-nickel layered double hydroxide composite paper
  • Preparation method of gold/copper selenide/cobalt-nickel layered double hydroxide composite paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The preparation method of gold-copper selenide-cobalt nickel layered double hydroxide composite paper, the specific preparation scheme is as follows:

[0018] (1) First use Adobe illustrator CS6 software to design the batik pattern on the paper base, then print the designed batik pattern on the paper base with a wax printer model of Color Qube 8580, and finally place the batik paper base in an oven at 120 °C Heating for 50 s to obtain a hydrophilic region of the paper substrate;

[0019] (2) Prepare the paper-based conductive substrate. The process is divided into two steps. The first step is to synthesize gold seeds. First, 80 mL of secondary water is heated to 90 °C, and then 1.0 mL of 25 mM chloroauric acid solution is added. Then the obtained mixture was heated at 95 °C for 1 min, and finally 3 mL of sodium citrate solution with a mass fraction of 1% was added, and the heating was continued for 15 min to obtain a gold seed solution; the second step was obtained in s...

Embodiment 2

[0022] The preparation steps are the same as in Example 1, the difference is that in step (2), the second step is to grow gold nanoparticles on the surface of the hydrophilic area of ​​the paper substrate by in-situ growth method, and the growth solution used is composed of 30 mM chloroauric acid and Concentration of 4 mM sodium borohydride composition.

Embodiment 3

[0024] The preparation steps are the same as in Example 1, except that the deposition voltage used in the first step in step (3) is -0.2 V.

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PUM

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Abstract

The invention discloses a preparation method of gold / copper selenide / cobalt-nickel layered double hydroxide composite paper. The preparation method comprises the following steps: firstly, growing goldnanoparticles on the surface of a paper fiber network by using an in-situ growth method to prepare a paper-based conductive substrate; and then sequentially depositing copper selenide nanosheets andcobalt-nickel layered double hydroxide on the surface of the paper-based conductive substrate by utilizing an electro-deposition method to obtain the gold / copper selenide / cobalt-nickel layered doublehydroxide composite paper. The cobalt-nickel layered double hydroxide has a high surface volume ratio and a short carrier diffusion length, and can be used as a cocatalyst to effectively accelerate separation and transfer of photoinduced charges of copper selenide and greatly improve the photocatalytic performance of copper selenide. The composite paper is mild in preparation conditions, low in preparation cost and beneficial for mass production, and has high application value in the field of photocatalysis.

Description

technical field [0001] The invention relates to the technical field of paper fiber functionalization treatment technology and composite nanomaterial preparation, and more specifically relates to a preparation method of gold-copper selenide-cobalt nickel layered double hydroxide composite paper. Background technique [0002] As a narrow bandgap (1.57 eV) semiconductor, copper selenide has the advantages of low cost, environmental protection, and high photocatalytic activity. It is a good photocatalyst and is widely used in the field of photocatalysis. The narrow bandgap width of copper selenide makes it have strong visible light response ability. Under visible light excitation, photogenerated electrons transition from the valence band to the conduction band, while holes are generated in the valence band. However, photogenerated electrons and holes are easily recombined, which will greatly affect their photocatalytic performance. Therefore, it is necessary to introduce co-ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J31/06B01J35/10
CPCB01J27/0573B01J31/06B01J31/069B01J35/61B01J35/39
Inventor 杨红梅于京华张彦李正林葛慎光
Owner UNIV OF JINAN
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