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Silver/silver bromide/silver metavanadate plasma compound photocatalyst and preparation method thereof

A silver metavanadate and plasma technology is applied in the field of photocatalysis, which can solve the problem of low utilization rate of catalysts, and achieve the effects of superior photodegradation performance, convenient industrial production and short production process.

Inactive Publication Date: 2014-06-11
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problem that the catalyst utilization rate is not high, the present invention provides a silver / silver bromide / silver metavanadate plasma composite photocatalyst with high-efficiency visible light catalytic activity

Method used

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  • Silver/silver bromide/silver metavanadate plasma compound photocatalyst and preparation method thereof
  • Silver/silver bromide/silver metavanadate plasma compound photocatalyst and preparation method thereof
  • Silver/silver bromide/silver metavanadate plasma compound photocatalyst and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] A kind of preparation method of silver / silver bromide / silver metavanadate plasma composite photocatalyst

[0036] (1) Weigh 1 mmol of ammonium metavanadate into a clean beaker, add 20 mL of distilled water, and stir on a magnetic stirrer to dissolve it completely. After it dissolves, add 1 mmol of silver nitrate while stirring, and continue stirring for 10 minutes; after stirring, transfer the obtained solution into a stainless steel autoclave with a capacity of 20mL polytetrafluoroethylene liner and react at 140°C for 12h . After the reaction time is up, take out the reaction kettle, cool it down to room temperature naturally, take out the precipitated product in the kettle, centrifuge, wash the precipitated product with ethanol and distilled water respectively, and finally place it in a vacuum drying oven at 60°C for 6 hours to obtain the product Silver Metavanadate.

[0037] (2) Disperse the silver metavanadate nanobelts in distilled water at 25°C to a concentratio...

Embodiment 2

[0040] (1) Weigh 1 mmol of ammonium metavanadate into a clean beaker, add 20 mL of distilled water, and stir on a magnetic stirrer to dissolve it completely. After it dissolves, add 1 mmol of silver nitrate while stirring, and continue stirring for 10 minutes; after stirring, transfer the obtained solution into a stainless steel autoclave with a capacity of 20mL polytetrafluoroethylene liner and react at 160°C for 12h . After the reaction time is up, take out the reaction kettle, cool it down to room temperature naturally, take out the precipitated product in the kettle, centrifuge, wash the precipitated product with ethanol and distilled water respectively, and finally place it in a vacuum drying oven at 60°C for 6 hours to obtain the product Silver Metavanadate.

[0041] (2) Disperse the silver metavanadate nanobelts in distilled water at 20°C to a concentration of 0.1mol / dm 3 The surfactant dodecyltrimethylammonium bromide was slowly added dropwise to the silver metavanad...

Embodiment 3

[0044] (1) Weigh 1 mmol of ammonium metavanadate into a clean beaker, add 20 mL of distilled water, and stir on a magnetic stirrer to dissolve it completely. After it dissolves, add 1 mmol of silver nitrate while stirring, and continue stirring for 10 minutes; after stirring, transfer the obtained solution into a stainless steel autoclave with a capacity of 20mL polytetrafluoroethylene liner and react at 160°C for 24h . After the reaction time is up, take out the reaction kettle, cool it down to room temperature naturally, take out the precipitated product in the kettle, centrifuge, wash the precipitated product with ethanol and distilled water respectively, and finally place it in a vacuum drying oven at 60°C for 8 hours to obtain the product Silver Metavanadate.

[0045] (2) Disperse the silver metavanadate nanobelts in distilled water at 0°C, and the concentration is 0.1mol / dm 3 The surfactant dodecyltrimethylammonium bromide was slowly added dropwise to AgVO 3 solution,...

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Abstract

The invention discloses a silver / silver bromide / silver metavanadate plasma compound photocatalyst and a preparation method thereof. The photocatalyst comprises silver, silver bromide and silver metavanadate, wherein the silver metavanadate is nanoribbon, and silver and silver bromide particles are loaded on the silver metavanadate. The preparation method comprises steps of fully dissolving silver metavanadate and dodecyl trimethyl ammonium bromide in water; continuously stirring under light condition and fully mixing; and finally irradiating in the sun so as to obtain the silver / silver bromide / silver metavanadate plasma compound photocatalyst. The preparation method has the advantages of high yield, low cost and short production process, and can be put into industrial production conveniently. The silver / silver bromide / silver metavanadate plasma compound photocatalyst prepared by the method has very excellent light degradation performance.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a plasma composite photocatalyst and a preparation method thereof. Background technique [0002] Because the surface plasmon resonance effect of silver nanoparticles effectively expands the response of the system to visible light and greatly improves the utilization rate of sunlight. As a frontier topic in the field of materials and chemistry, the research on surface plasmon photocatalytic materials of silver nanoparticles has shown its unique efficacy and broad application prospects in new energy and environmental purification. Due to the close contact between metallic silver and silver bromide, the electrons generated in the system can be transferred to the metallic silver particles more easily, which prevents the combination of electrons and silver positive ions and ensures the stability of the system. Moreover, semiconductor AgBr is an important image recording material, but wh...

Claims

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Application Information

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IPC IPC(8): B01J27/08
Inventor 耿保友桑艳
Owner ANHUI NORMAL UNIV
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