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BiOX/ZnSn(OH)6 composite photocatalyst, and preparation method and application thereof

A catalyst and composite light technology, applied in the field of photocatalysis

Inactive Publication Date: 2019-09-06
FUYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, ZnSn(OH) 6 With a wide bandgap energy (E g =4.0eV), so it can only use part of the ultraviolet light that accounts for very little solar energy

Method used

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  • BiOX/ZnSn(OH)6 composite photocatalyst, and preparation method and application thereof
  • BiOX/ZnSn(OH)6 composite photocatalyst, and preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0072] (1) The preparation method of the composite photocatalyst provided by the invention is simple and easy;

[0073] (2) The composite photocatalyst provided by the invention is environmentally friendly and low in cost;

[0074] (3) The composite photocatalyst provided by the invention improves the absorption range and intensity of visible light, has high photocatalytic activity, and can be used to degrade dye wastewater, especially dye wastewater containing methyl orange, and its degradation rate can reach 91.2%.

Embodiment 1

[0080] 0.2168g Bi(NO 3 ) 3 ·5H 2 The KBr of O and 0.500g is dissolved in 60mL ethylene glycol and obtains transparent solution A under magnetic stirring;

[0081] 1.0g ZnSn(OH) 6 Disperse in 30mL distilled water under ultrasonic conditions to obtain mixture B;

[0082] Then, under vigorous stirring at 30°C, solution A was added dropwise to mixture B, after the dropwise addition was completed, stirring was continued at room temperature for 1.0 h, and the resulting mixture was heated on a water bath at 80°C for 2.0 h;

[0083] Filter, wash the precipitate three times with distilled water and ethanol respectively, dry the obtained sample at 50°C for 2.0h, and after cooling, grind to obtain the sample BiOBr / ZnSn(OH) 6 , recorded as 12.0% BiOBr / ZnSn(OH) 6 .

Embodiment 2

[0085] This embodiment is the same as the method used in Example 1, the only difference is that the quality of bismuth nitrate pentahydrate used is 0.2500g, and the resulting composite photocatalyst product is recorded as 20.0%BiOBr / ZnSn(OH) 6 .

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Abstract

The invention provides a BiOX / ZnSn(OH)6 composite photocatalyst, and preparation method and an application thereof. The composite photocatalyst is obtained by compounding a certain amount of BiOBr anda certain amount of ZnSn(OH)6 under certain conditions. The composite photocatalyst can be used for degrading wastewater containing dyes, especially the dye wastewater containing methyl orange, and the degradation rate reaches 91.2%; and the preparation method of the photocatalyst is simple, and is in favor of promotion and application.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a BiOX / ZnSn(OH) 6 Composite photocatalyst and its preparation and application. Background technique [0002] Photocatalysis is a technology that converts the light energy that exists in nature into the energy required for chemical reactions to produce catalysis. By this means, it can decompose organic substances that are harmful to the human body and the environment without causing waste of resources and The formation of additional pollution. A large number of studies have shown that almost all organic pollutants can be effectively photocatalytically degraded, decolorized, and mineralized into small inorganic molecules, thereby eliminating pollution and harm to the environment. Therefore, photocatalytic degradation has gradually become the field of organic pollution control. one of the research hotspots. [0003] In the process of textile printing and dyeing, a large number of au...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/138C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J27/138C02F1/30C02F2305/10C02F2101/308C02F2101/34C02F2101/38C02F2101/40B01J35/39
Inventor 崔玉民李慧泉殷榕灿储陆峰苗慧
Owner FUYANG NORMAL UNIVERSITY