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A kind of preparation method of zno/zns/znse composite nanobelt photocatalyst film

A technology of photocatalyst and nanobelt, which is applied in physical/chemical process catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc. It can solve problems such as complex operation steps and large amounts of surfactants, and achieve cheap and easy raw materials. Obtain, reduce adverse influence factors, high activity effect

Active Publication Date: 2021-06-29
JILIN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these methods, some require expensive equipment and precise operation methods, and some require a large amount of surfactant and complicated operation steps in the process of catalyst curing. In order to solve the above problems, it is urgent to develop simple, economical and environmentally friendly method to prepare highly efficient ZnO / ZnS / ZnSe photocatalyst thin films

Method used

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  • A kind of preparation method of zno/zns/znse composite nanobelt photocatalyst film
  • A kind of preparation method of zno/zns/znse composite nanobelt photocatalyst film
  • A kind of preparation method of zno/zns/znse composite nanobelt photocatalyst film

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Experimental program
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Effect test

Embodiment 1

[0027] The commercially available zinc sheet with a purity greater than 99.9% and an area of ​​1 cm×1 cm was ultrasonically cleaned for 3 times with distilled water and absolute ethanol respectively before use. Dissolve 0.04mmol of thiourea, 0.16mmol of selenium powder, and 0.6mmol of sodium borohydride into 10mL of ethylenediamine, and transfer the solution to a 20mL reaction kettle; then put the treated metal zinc flakes into the autoclave In the middle; keep the reaction kettle at 180°C for 24h; take out the zinc sheet after cooling, and wash with deionized water and absolute ethanol respectively. Then put the zinc flakes and 10mL deionized water obtained in the previous step into a 20mL reactor, and keep the reactor at 140°C for 6 hours; after cooling, take out the zinc flakes and wash them with deionized water and absolute ethanol to obtain ZnO / ZnS / ZnSe composite nanoribbon photocatalyst film.

[0028] Effect verification: attached figure 1 Middle curve a is the X-ray ...

Embodiment 2

[0030]The commercially available zinc sheet with a purity greater than 99.9% and an area of ​​1 cm×1 cm was ultrasonically cleaned for 3 times with distilled water and absolute ethanol respectively before use. Dissolve 0.1mmol of thiourea, 0.1mmol of selenium powder, and 0.4mmol of sodium borohydride into 10mL of ethylenediamine, and transfer the solution to a 20mL reaction kettle; then put the treated metal zinc flakes into the autoclave In the middle; keep the reaction kettle at 200°C for 18h; take out the zinc sheet after cooling, and wash with deionized water and absolute ethanol respectively. Then put the zinc flakes obtained in the previous step and 10mL deionized water into a 20mL reactor, and keep the reactor at 100°C for 10h; after cooling, take out the zinc flakes and wash them with deionized water and absolute ethanol to obtain ZnO / ZnS / ZnSe composite nanoribbon photocatalyst film.

[0031] Effect verification: attached figure 1 Middle curve b is the X-ray diffrac...

Embodiment 3

[0033] The commercially available zinc sheet with a purity greater than 99.9% and an area of ​​1 cm×1 cm was ultrasonically cleaned for 3 times with distilled water and absolute ethanol respectively before use. Dissolve 0.16mmol of thiourea, 0.04mmol of selenium powder, and 0.2mmol of sodium borohydride into 10mL of ethylenediamine, and transfer the solution to a 20mL reaction kettle; then put the treated metal zinc flakes into the autoclave In the middle; keep the reaction kettle at 160°C for 30h; after cooling, take out the zinc sheet and wash it with deionized water and absolute ethanol respectively. Then put the zinc flakes and 10mL deionized water obtained in the previous step into a 20mL reactor, and keep the reactor at 180°C for 2 hours; after cooling, take out the zinc flakes and wash them with deionized water and absolute ethanol to obtain ZnO / ZnS / ZnSe composite nanoribbon photocatalyst film.

[0034] Effect verification: attached figure 1 Middle curve c is the X-r...

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Abstract

The invention discloses a preparation method of a ZnO / ZnS / ZnSe composite nano-belt photocatalyst film, belonging to the technical fields of inorganic materials, environmental protection and photocatalysis. Aiming at the problems existing in the existing ZnO / ZnS / ZnSe composite material synthesis method such as the use of many chemical reagents, complex preparation process, complex and expensive equipment, severe synthesis conditions, etc., the present invention dissolves thiourea, selenium powder and sodium borohydride in In ethylenediamine solution, ZnO / ZnS / ZnSe composite nanobelt photocatalyst film was synthesized on zinc sheet by secondary solvothermal method. The method has the characteristics of cheap raw materials, simple synthesis method, convenient operation and the like, and the obtained ZnO / ZnS / ZnSe composite nanobelt has good photocatalytic activity under sunlight.

Description

technical field [0001] The invention belongs to the technical fields of inorganic materials, environmental protection and photocatalysis, and in particular relates to a preparation method for preparing a ZnO / ZnS / ZnSe composite nanobelt photocatalyst film on a metal zinc sheet. Background technique [0002] Textile, printing and dyeing industries discharge a large amount of dye wastewater every day. These dye wastewaters have the characteristics of large water volume and high content of organic pollutants, and are one of the difficult industrial wastewaters to treat. my country's textile industry wastewater ranks sixth in the country's industrial wastewater discharge, of which 80% is printing and dyeing wastewater. These dye wastewaters have seriously affected the ecological environment and people's health. Printing and dyeing wastewater is one of the most difficult types of industrial wastewater. Due to technical, economic and other reasons, most of the currently adopted ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/057B01J35/06C02F1/30
CPCC02F1/30B01J27/0573C02F2305/10B01J35/59B01J35/39
Inventor 李秀艳朱邦耀丛琳王婧姝张旗
Owner JILIN NORMAL UNIV