Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of magnetic buckwheat husk-supported zirconium-doped photocatalyst

A technology of photocatalyst and buckwheat husk, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of less photocatalyst, achieve uniform particle dispersion, good absorption, and good stability Effect

Inactive Publication Date: 2019-11-15
UNIV OF JINAN
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of supported ZnIn reported in the literature 2 S 4 less photocatalyst

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Buckwheat husk pretreatment: In the reactor, add 3mol / L hydrochloric acid solution: 83mL, potassium permanganate: 3g, stir to dissolve, then add buckwheat husk: 14g, soak at room temperature for 8h, and then boil for 15min. After cooling, wash with deionized water until neutral, separate solid and liquid, and dry to obtain pretreated buckwheat husk;

[0023] (2) Preparation of magnetic buckwheat husk particles: In the reaction kettle, add 1-allyl-3-methylimidazole bistrifluoromethanesulfonimide salt: 62g, pretreatment pretreatment buckwheat husk: 22g, stir Uniform, sealed, the temperature rises to 140°C constant temperature, reacts for 16 hours, cools to room temperature, adds soluble starch: 8g, heats and stirs to dissolve, then adds nano-magnetic powder: 8g, stirs vigorously, extrudes to granulate, the particle size is 0.1~0.6 mm range, freeze-dried to obtain magnetic buckwheat husk particles;

[0024] (3) Zirconium-doped ZnIn 2 S 4 Preparation of photocatalys...

Embodiment 2

[0027] (1) Buckwheat husk pretreatment: In the reactor, add 3mol / L hydrochloric acid solution: 170mL, potassium permanganate: 4g, stir to dissolve, then add buckwheat husk: 26g, soak at room temperature for 8h, and then boil for 15min. After cooling, wash with deionized water until neutral, separate solid and liquid, and dry to obtain pretreated buckwheat husk;

[0028] (2) Preparation of magnetic buckwheat husk particles: In the reaction kettle, add 1-allyl-3-methylimidazole bistrifluoromethanesulfonimide salt: 58g, pretreatment pretreatment buckwheat husk: 24g, stir Uniform, sealed, the temperature rises to 140°C constant temperature, reacts for 17 hours, cools to room temperature, adds soluble starch: 9g, heats and stirs to dissolve, then adds nano-magnetic powder: 9g, stirs vigorously, extrudes to granulate, the particle size is 0.1~0.6 mm range, freeze-dried to obtain magnetic buckwheat husk particles;

[0029](3) Zirconium-doped ZnIn 2 S 4 Preparation of photocatalys...

Embodiment 3

[0032] (1) Buckwheat husk pretreatment: In the reactor, add 3mol / L hydrochloric acid solution: 162mL, potassium permanganate: 8g, stir to dissolve, then add buckwheat husk: 30g, soak at room temperature for 8h, and then boil for 15min. After cooling, wash with deionized water until neutral, separate solid and liquid, and dry to obtain pretreated buckwheat husk;

[0033] (2) Preparation of magnetic buckwheat husk particles: In the reaction kettle, add 1-allyl-3-methylimidazole bistrifluoromethanesulfonimide salt: 66g, pretreatment pretreatment buckwheat husk: 20g, stir Uniform, sealed, the temperature rises to 140°C constant temperature, reacts for 15 hours, cools to room temperature, adds soluble starch: 6g, heats and stirs to dissolve, then adds nano-magnetic powder: 8g, stirs vigorously, extrudes to granulate, the particle size is 0.1~0.6 mm range, freeze-dried to obtain magnetic buckwheat husk particles;

[0034] (3) Zirconium-doped ZnIn 2 S 4 Preparation of photocataly...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a magnetic buckwheat husk-supported zirconium-doped photocatalyst. The method is characterized by comprising the following steps: performing pretreatment on buckwheat husks by adopting hydrochloric acid and potassium permanganate; performing magnetization on the pretreated buckwheat husks by adopting nano magnetic powder, and preparing a zirconium-doped ZnIn2S4 photocatalyst by adopting a hydrothermal process; and adding the following components into a reactor, in percentages by mass: 15-20% of absolute ethanol, 10-14% of KH550, and 8-12% of thezirconium-doped ZnIn2S4 photocatalyst, performing uniform stirring, adding 60-65% by mass of magnetic buckwheat husk microparticles, wherein a sum of the components is 100%, performing mixing under vigorous stirring for 4 h, and performing drying to obtain the magnetic buckwheat husk-supported zirconium-doped photocatalyst. The preparation method provided by the invention is simple, and the photocatalyst has the characteristics of good stability, degradability and environmental friendliness; and the catalyst is easy to recover, and has the characteristics of mild reaction conditions, high catalytic activity, and a small use amount.

Description

technical field [0001] The invention relates to the technical field of preparation of supported catalysts, in particular to a method for preparing a zirconium-doped photocatalyst supported by magnetic buckwheat husks and its application in wastewater treatment. Background technique [0002] Semiconductor photocatalysis technology, as a new "green chemical method", has been widely studied in energy conversion and environmental restoration applications. Traditional semiconductor photocatalysts such as TiO2 and ZnO have strong oxidizing properties and good photoinducibility, and have been widely used in the degradation of various pollutants in water bodies. The ability to utilize ultraviolet light, which accounts for only 4% of the solar spectrum, significantly limits its applications. Therefore, the development of new visible-light-responsive semiconductor photocatalysts has attracted more and more attention. In recent years, sulfur indium zinc (ZnIn 2 S 4 ) has attracted ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J27/04C02F1/30C02F101/38
CPCB01J27/04C02F1/30C02F2305/10C02F2101/308C02F2101/40B01J35/33B01J35/39
Inventor 李慧芝张卫民朱学英
Owner UNIV OF JINAN