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Confinement growth znin in a hollow carbon nanosphere 2 the s 4 Photocatalyst and its preparation method

A photocatalyst, znin2s4 technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effects of good photocatalytic hydrogen production stability, simple preparation method, and excellent light-driven hydrogen production activity

Active Publication Date: 2021-04-20
扬州依利安达电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, by introducing the concept of confined reaction space to construct a new type of nano-photocatalytic reactor, thereby improving the light absorption and water molecule adsorption performance to improve the material's photolysis of water and hydrogen production activity, there are few reports.

Method used

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  • Confinement growth znin in a hollow carbon nanosphere  <sub>2</sub> the s  <sub>4</sub> Photocatalyst and its preparation method
  • Confinement growth znin in a hollow carbon nanosphere  <sub>2</sub> the s  <sub>4</sub> Photocatalyst and its preparation method
  • Confinement growth znin in a hollow carbon nanosphere  <sub>2</sub> the s  <sub>4</sub> Photocatalyst and its preparation method

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preparation example Construction

[0039] Confined Growth ZnIn in Carbon Nano Hollow Spheres of the Invention 2 S 4 The preparation method of photocatalyst comprises the following steps:

[0040] 1a) Dissolve indium nitrate, zinc nitrate and L-cysteine ​​in deionized water, then stir at room temperature to obtain a solution, wherein the ratio of indium nitrate, zinc nitrate, L-cysteine ​​and deionized water For: 0.2-1.0g: 1.2-2.0g: 4.0-6.0g: 4.0-6.0g: 40-60mL;

[0041] 2a) Transfer the solution obtained in step 1a) to a polytetrafluoroethylene-lined stainless steel autoclave, heat and maintain it, then cool to room temperature, wash with deionized water and ethanol to obtain a black-green product, and then turn the black-green The product is dried to obtain the confinement growth ZnIn in microspherical carbon nano hollow spheres 2 S 4Photocatalyst (microsphere ZnIn 2 S 4 catalyst of light).

[0042] The time of stirring in step 1a) is 1-5h;

[0043] In step 2a), heat to 180-200°C and keep for 3-6h;

[...

Embodiment 1

[0061] Confined Growth ZnIn in Carbon Nano Hollow Spheres of the Invention 2 S 4 The preparation method of photocatalyst comprises the following steps:

[0062] 1a) Dissolve indium nitrate, zinc nitrate and L-cysteine ​​in deionized water, then stir at room temperature to obtain a solution, wherein the ratio of indium nitrate, zinc nitrate, L-cysteine ​​and deionized water For: 0.2g: 2.0g: 4.0g: 6.0g: 40mL;

[0063] 2a) Transfer the solution obtained in step 1a) to a polytetrafluoroethylene-lined stainless steel autoclave, heat and maintain it, then cool to room temperature, wash with deionized water and ethanol to obtain a black-green product, and then turn the black-green The product is dried to obtain the confinement growth ZnIn in microspherical carbon nano hollow spheres 2 S 4 catalyst of light.

[0064] The time of stirring in step 1a) is 5h;

[0065] Heating to 200°C in step 2a) and maintaining for 6h;

[0066] In step 2a), the black-green product was dried in an...

Embodiment 2

[0068] Confined Growth ZnIn in Carbon Nano Hollow Spheres of the Invention 2 S 4 The preparation method of photocatalyst comprises the following steps:

[0069] 1a) Dissolve indium nitrate, zinc nitrate and L-cysteine ​​in deionized water, then stir at room temperature to obtain a solution, wherein the ratio of indium nitrate, zinc nitrate, L-cysteine ​​and deionized water For: 1.0g: 1.2g: 6.0g: 4.0g: 60mL;

[0070] 2a) Transfer the solution obtained in step 1a) to a polytetrafluoroethylene-lined stainless steel autoclave, heat and maintain it, then cool to room temperature, wash with deionized water and ethanol to obtain a black-green product, and then turn the black-green The product is dried to obtain the confinement growth ZnIn in microspherical carbon nano hollow spheres 2 S 4 catalyst of light.

[0071] The time of stirring in step 1a) is 1h;

[0072] Heating to 180°C in step 2a) and maintaining for 3h;

[0073] In step 2a), the black-green product was dried in an...

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Abstract

The invention discloses a kind of confined growth ZnIn in carbon nano hollow spheres 2 S 4 A photocatalyst and a preparation method thereof, the photocatalyst encapsulates sheet-layer catalytically active components in nanoscale shells, and ZnIn 2 S 4 The photocatalyst is the internal reaction active center, and the outer layer of amorphous carbon is the shell layer. The photocatalyst improves the activity of photolysis of water to produce hydrogen by improving the performance of light absorption and water molecule adsorption.

Description

technical field [0001] The present invention relates to a kind of ZnIn 2 S 4 Photocatalyst and preparation method thereof, in particular to a confined growth of ZnIn in carbon nano hollow spheres 2 S 4 Photocatalyst and its preparation method. Background technique [0002] With the continuous depletion of fossil energy, carbon emissions and various environmental problems are increasing, making people face severe energy and environmental crises. Therefore, how to seek green and clean energy and solve the current energy supply problem is a difficult problem before people. The use of solar energy to photolyze water to produce hydrogen is considered to be an efficient and clean energy source with great potential for industrial application. Therefore, improving the hydrogen production activity of solar water splitting is the key problem restricting its large-scale application. [0003] In recent years, researchers have further improved the photocatalytic activity of inorgan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04B01J37/10B82Y30/00B82Y40/00C01B3/04
CPCB01J27/04B01J37/10B82Y30/00B82Y40/00C01B3/042B01J35/39Y02E60/36
Inventor 杨贵东李贺黄宇
Owner 扬州依利安达电子有限公司