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Molybdenum disulfide/silver phosphate composite visible light photocatalytic material and preparation method thereof

A photocatalytic material, molybdenum disulfide technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low utilization rate of visible light and low degradation efficiency of high-concentration organic dyes, etc. It achieves the effects of being conducive to large-scale promotion, simple and easy preparation method, and mild synthesis conditions

Active Publication Date: 2014-01-15
泰州市海创新能源研究院有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a low-cost, high-efficiency graphene-like molybdenum disulfide / silver phosphate composite visible light photocatalyst and its preparation method, which realizes the effective control of the morphology of silver phosphate in the hydrothermal process and solves the problem of existing photocatalysts. The utilization rate of visible light is not high, and the degradation efficiency of high-concentration organic dyes is low.

Method used

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  • Molybdenum disulfide/silver phosphate composite visible light photocatalytic material and preparation method thereof
  • Molybdenum disulfide/silver phosphate composite visible light photocatalytic material and preparation method thereof
  • Molybdenum disulfide/silver phosphate composite visible light photocatalytic material and preparation method thereof

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preparation example Construction

[0021] The method for preparing the visible light-responsive graphene-like molybdenum disulfide / silver phosphate composite photocatalyst of the present invention specifically includes the following steps:

[0022] In the first step, the graphene-like molybdenum disulfide is ultrasonically dispersed in an aqueous solution until uniform, to obtain a graphene-like molybdenum disulfide dispersion;

[0023] In the second step, the solid particles of silver nitrate are added to the dispersion obtained in step 1, and the ultrasound is continued until the silver nitrate is fully dissolved;

[0024] In the third step, add the prepared sodium phosphate solution dropwise to the solution obtained in the second step under the condition of heating in a water bath at 50~80℃ and stirring. After the addition is completed, continue to shading and stirring to make it evenly mixed After the reaction, the mass ratio of silver phosphate to graphene-like molybdenum disulfide is 100: 3~100: 0.1;

[0025] In ...

Embodiment 1

[0030] Example 1: The method for preparing the visible light-responsive graphene-like molybdenum disulfide / silver phosphate composite photocatalyst of the present invention specifically includes the following steps:

[0031] In the first step, 0.3 mg of graphene-like molybdenum disulfide was placed in 20 ml of aqueous solution for ultrasonic dispersion for 20 minutes with an ultrasonic power of 90 W to obtain a graphene-like molybdenum disulfide dispersion;

[0032] In the second step, 340 mg of silver nitrate solid particles were added to the dispersion obtained in the first step, and the ultrasound was continued until the silver nitrate was fully dissolved, and the ultrasonic power was 90 W;

[0033] In the third step, add the prepared sodium phosphate solution (containing 253 mg of sodium phosphate, 20 ml of deionized water) dropwise to the solution obtained in the second step under the condition of heating in a water bath at 50°C and uniform stirring. After the addition is comple...

Embodiment 2

[0035] Example 2: The method for preparing the visible light-responsive graphene-like molybdenum disulfide / silver phosphate composite photocatalyst of the present invention specifically includes the following steps:

[0036] In the first step, 1.5 mg of graphene-like molybdenum disulfide is placed in 20 ml of aqueous solution for ultrasonic dispersion for 30 minutes with an ultrasonic power of 90 W to obtain a graphene-like molybdenum disulfide dispersion;

[0037] In the second step, 340 mg of silver nitrate solid particles were added to the dispersion obtained in the first step, and the ultrasound was continued until the silver nitrate was fully dissolved, and the ultrasonic power was 90 W;

[0038] The third step is to add the prepared sodium phosphate solution (containing 253 mg of sodium phosphate, 20 ml of deionized water) dropwise to the solution obtained in the second step under the condition of heating in a water bath at 60°C and uniform stirring. After the addition is compl...

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Abstract

The invention relates to photocatalytic materials, and particularly relates to a visible-light response graphite-like alkene molybdenum disulfide / silver phosphate composite photocatalyst and a preparation method thereof. Modification treatment is performed on silver phosphate photocatalyst through utilizing graphite-like alkene molybdenum disulfide, so that the graphite-like alkene molybdenum disulfide / silver phosphate composite material is obtained, the composite material can greatly improve the absorption behavior of silver phosphate in visible regions, and the preparation method for the graphite-like alkene molybdenum disulfide / silver phosphate composite material is simple and practicable, the cost is low, the synthesis condition is wild, and large-scale popularization is facilitated; the prepared composite material has strong light absorption behavior in the visible regions.

Description

Technical field [0001] The invention relates to a photocatalytic material, in particular to a graphene-like molybdenum disulfide / silver phosphate composite photocatalyst that is responsive to visible light and a preparation method thereof, and belongs to the technical field of composite materials and photocatalysis in environmental governance. Background technique [0002] Since the 1970s, continuous environmental pollution and energy shortages have caused people to worry about global crises. In order to achieve the sustainable development of human society, a new type of system that can be used for environmental governance and clean energy production has been developed. Technology has become an urgent and urgent task. Because of its broad application prospects in environmental protection, clean energy production (conversion of solar energy into hydrogen energy) and other fields, photocatalytic technology is highly valued and has become a promising application prospect. technology...

Claims

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Application Information

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IPC IPC(8): B01J27/18
Inventor 许晖王程李华明宋艳华徐远国颜佳朱嘉祥
Owner 泰州市海创新能源研究院有限公司
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