Preparation method and application of ZnIn2S4 nanosheet coated BiVO4 microrod core-shell heterojunction catalyst

A technology of znin2s4 and nanosheets, applied in the fields of environmental management and photocatalysis, can solve the problem of no literature report, and achieve the effect of improving the utilization rate, broadening the absorption range, and improving the reduction and oxidation capacity.

Pending Publication Date: 2022-06-24
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

at BiVO 4 In situ growth of sheet-like ZnIn on the surface of 2 S 4 There is no literature report on the formation of compact heterogeneous structure to degrade organic pollutant TC

Method used

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  • Preparation method and application of ZnIn2S4 nanosheet coated BiVO4 microrod core-shell heterojunction catalyst
  • Preparation method and application of ZnIn2S4 nanosheet coated BiVO4 microrod core-shell heterojunction catalyst
  • Preparation method and application of ZnIn2S4 nanosheet coated BiVO4 microrod core-shell heterojunction catalyst

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Experimental program
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Effect test

Embodiment 1

[0027] (1) Add 1mmol Bi(NO 3 ) 3 ·5H 2 O was dissolved in 15ml of ethylene glycol to obtain solution A. 1mmol NH 4 VO 3 Dissolve in 15ml deionized water to obtain solution B. Solution B was slowly dropped into solution A with stirring, the resulting mixture was transferred into a 40 ml Teflon-lined autoclave and heated at 140 °C for 24 h. The reacted material was washed three times with deionized water and absolute ethanol, and dried at 60 °C for 10 h to obtain BiVO 4 Material.

[0028] (2) Weigh 0.05mmol of BiVO obtained in step 1 4 Disperse in 20ml of dilute hydrochloric acid solution with pH=2.5, add 3ml of glycerin and stir. Then add 0.2mmol ZnCl 2 , 0.2mmol InCl 3 4H 2 O and 0.4mmol thioacetamide were dissolved by ultrasonic stirring. Put the solution in an oil bath and heat it at 80°C for 2h, centrifuge the reacted mixture, wash it with deionized water and absolute ethanol three times, and dry it at 60°C for 10h to obtain ZnIn 2 S 4 / BiVO 4 The composite ma...

Embodiment 2

[0030] (1) Add 1mmol Bi(NO 3 ) 3 ·5H 2 O was dissolved in 15ml of ethylene glycol to obtain solution A. 1mmol NH 4 VO 3 Dissolve in 15ml deionized water to obtain solution B. Solution B was slowly dropped into solution A with stirring, the resulting mixture was transferred into a 40 ml Teflon-lined autoclave and heated at 140 °C for 24 h. The reacted material was washed three times with deionized water and absolute ethanol, and dried at 60 °C for 10 h to obtain BiVO 4 Material.

[0031] (2) Weigh 0.10 mmol of BiVO obtained in step 1 4 Disperse in 20ml of dilute hydrochloric acid solution with pH=2.5, add 3ml of glycerin and stir. Then add 0.2mmol ZnCl 2 , 0.2mmol InCl 3 4H 2 O and 0.4mmol thioacetamide were dissolved by ultrasonic stirring. Put the solution in an oil bath and heat it at 80°C for 2h, centrifuge the reacted mixture, wash it with deionized water and absolute ethanol three times, and dry it at 60°C for 10h to obtain ZnIn 2 S 4 / BiVO 4 The composite ...

Embodiment 3

[0033] (1) Add 1mmol Bi(NO 3 ) 3 ·5H 2 O was dissolved in 15ml of ethylene glycol to obtain solution A. 1mmol NH 4 VO 3 Dissolve in 15ml deionized water to obtain solution B. Solution B was slowly dropped into solution A with stirring, the resulting mixture was transferred into a 40 ml Teflon-lined autoclave and heated at 140 °C for 24 h. The reacted material was washed three times with deionized water and absolute ethanol, and dried at 60 °C for 10 h to obtain BiVO 4 Material.

[0034] (2) Weigh 0.15 mmol of BiVO obtained in step 1 4 Disperse in 20ml of dilute hydrochloric acid solution with pH=2.5, add 3ml of glycerin and stir. Then add 0.2mmol ZnCl 2 , 0.2mmol InCl 3 4H 2 O and 0.4mmol thioacetamide were dissolved by ultrasonic stirring. Put the solution in an oil bath and heat it at 80°C for 2h, centrifuge the reacted mixture, wash it with deionized water and absolute ethanol three times, and dry it at 60°C for 10h to obtain ZnIn 2 S 4 / BiVO 4 The composite ...

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Abstract

The invention belongs to the field of catalysts, and discloses a preparation method and application of a ZnIn2S4 nanosheet coated BiVO4 microrod core-shell heterojunction catalyst. The catalyst is synthesized by an oil bath method, and the preparation method comprises the following steps: adding BiVO4, ZnCl2, InCl3. 4H2O and thioacetamide into diluted hydrochloric acid, adding a certain amount of glycerol, putting into a round-bottom flask, reacting for a certain time at a certain temperature, and centrifuging, washing and drying the obtained product to obtain the brown ZnIn2S4 / BiVO4 composite material. The flaky ZnIn2S4 material grows on the mulberry-shaped BiVO4 surface in situ, and the ZnIn2S4 material and the mulberry-shaped BiVO4 surface are in close contact, so that effective separation and transfer of photo-generated charges can be realized. And the light absorption range of the photocatalyst is widened by utilizing the matched band gap of the two, so that the photocatalytic activity of the material is improved. The prepared composite material can be applied to catalytic degradation of tetracycline TC under visible light. The method is simple in operation process, short in material synthesis period and mild in reaction condition.

Description

technical field [0001] The invention belongs to the field of photocatalysis technology and the field of environmental governance, and specifically relates to a ZnIn 2 S 4 Nanosheet-wrapped BiVO 4 Preparation method and application of microrod core-shell heterojunction catalyst. Background technique [0002] With the continuous development and progress of medical technology, antibiotics are widely used in the treatment of diseases. However, the abuse of antibiotics also has a serious impact on the environment on which human beings depend: they cannot be degraded, and a large amount of organic pollutants remain, causing serious pollution problems to water bodies. All kinds of antibiotics in the water are transferred to the human body through different ways, which has caused great harm to people's health. Therefore, how to effectively deal with residual organic pollutants in water has become a major concern. Traditional sewage treatment methods have disadvantages such as l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/04B01J35/10C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J27/04B01J35/004B01J35/1004B01J35/008C02F1/30C02F2101/30C02F2101/34C02F2101/38C02F2305/10
Inventor 夏杰祥严兴旺王彬尹盛李华明
Owner JIANGSU UNIV
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