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Catalyst for pollutant degradation under natural light and preparation method of catalyst

A natural light and catalyst technology, applied in physical/chemical process catalysts, water pollutants, chemical instruments and methods, etc., can solve the problems of human and environmental damage, cumbersome preparation process, secondary pollution of by-products, etc., and reduce production costs. , Large specific surface area, the effect of improving efficiency

Active Publication Date: 2021-03-09
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The synthesis of zinc oxide nanoparticles in the above-mentioned prior art has problems such as cumbersome preparation process, secondary pollution caused by by-products, and certain harm to human body and environment during the synthesis process.

Method used

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  • Catalyst for pollutant degradation under natural light and preparation method of catalyst
  • Catalyst for pollutant degradation under natural light and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Add 1g of Spartina alterniflora to 200ml of ethanol, incubate at 70°C for 2 hours, and filter to prepare Spartina alterniflora filtrate;

[0044] Take 10ml of Spartina alterniflora filtrate, add 5.6g of zinc acetate, 1.8g of sodium hydroxide, 0.2g of Spartina alterniflora powder, stir, and sonicate for 2 hours to obtain 20ml of loaded biochar-ZnO nanoparticle precursor;

[0045] React the biochar-ZnO nanoparticle precursor prepared above in a 70°C water bath for 5 hours to prepare 18ml of biochar-ZnO nanoparticle precursor carbon airgel;

[0046] The above-mentioned loaded biochar-ZnO nanoparticle precursor carbon airgel was centrifuged at 8000r / min for 2min, and dried at 60°C to obtain 3.2g of the dried loaded biochar-ZnO nanoparticle precursor carbon airgel;

[0047] The dried loaded biochar-ZnO nanoparticle precursor carbon aerogel was calcined at 900 °C in anaerobic high temperature to obtain 2.4 g of biochar-ZnO nanoparticle composite catalyst.

[0048] X-ray diff...

Embodiment 2

[0056] Add 1g of Spartina alterniflora to 200ml of ethanol, incubate at 70°C for 2 hours, and filter to prepare Spartina alterniflora filtrate;

[0057] Take 10ml of Spartina alterniflora filtrate, add 5.6g of zinc acetate, 1.8g of sodium hydroxide, 2.8g of Spartina alterniflora powder, stir, and sonicate for 2 hours to obtain 21.3ml of biochar-ZnO nanoparticle precursor;

[0058] React the loaded biochar-ZnO nanoparticle precursor prepared above in a 70°C water bath for 5 hours to prepare 19.1ml of loaded biochar-ZnO nanoparticle precursor carbon airgel liquid;

[0059] Prepare the above-mentioned loaded biochar-ZnO nanoparticle precursor carbon airgel, centrifuge at 8000r / min for 2min, and dry at 60°C to obtain 3.61g of loaded biochar-ZnO nanoparticle precursor carbon airgel after drying;

[0060] The dried loaded biochar-ZnO nanoparticles precursor carbon aerogel was calcined at 900 °C in anaerobic high temperature to obtain 3.13 g of biochar-ZnO nanoparticles composite cat...

Embodiment 3

[0063] Add 1g of Spartina alterniflora to 200ml of ethanol, incubate at 70°C for 2 hours, and filter to prepare Spartina alterniflora filtrate;

[0064] Take 10ml of Spartina alterniflora filtrate, add 5.6g of zinc acetate, 1.8g of sodium hydroxide, 2g of Spartina alterniflora powder, stir, and sonicate for 2 hours to obtain 20.8ml of biochar-ZnO nanoparticle precursor;

[0065] React the loaded biochar-ZnO nanoparticle precursor prepared above in a 70°C water bath for 5 hours to prepare 18.5ml of loaded biochar-ZnO nanoparticle precursor carbon airgel;

[0066] The above-mentioned loaded biochar-ZnO nanoparticle precursor was centrifuged at 7000r / min for 3min, and dried at 80°C to obtain 3.42g of the dried loaded biochar-ZnO nanoparticle precursor carbon airgel;

[0067] The dried loaded biochar-ZnO nanoparticle precursor carbon aerogel was calcined at 900 °C in anaerobic high temperature to obtain 3.02 g of biochar-ZnO nanoparticle composite catalyst.

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Abstract

The invention discloses a catalyst for pollutant degradation under natural light, a preparation method of the catalyst and a method for degrading and adsorbing malachite green by photodriving under the natural light. The catalyst is biochar-ZnO nanoparticles taking biochar as a carrier and taking zinc oxide as an active component. According to the catalyst, spartina alterniflora filtrate is takenas a reducing agent and a dispersing agent; zinc oxide nanoparticles are uniformly mixed into spartina alterniflora powder by an ultrasonic method; the specific surface area of the catalyst is increased by a carbon aerogel technology, and therefore, reaction operation is simple, the catalyst is safe, pollution-free, high in catalytic efficiency and high in industrial utilization rate; and the catalyst has a certain application value in the aspect of degrading pollutants under the natural light.

Description

technical field [0001] The invention belongs to the field of organic pollutant treatment, and in particular relates to a catalyst for degrading organic pollutants by natural light and a preparation method thereof. [0002] technical background [0003] The problem of water pollution is one of the problems to be solved in the environmental pollution of the world today. In 1972, Japanese scholars Fujishima (Fujishima) and Ben Duojian (Honda) put TiO 2 As a semiconductor photocatalyst, splitting water to produce H under ultraviolet irradiation 2 and O 2 , after which semiconductor catalysts have been extensively developed. Photocatalytic reaction is the process in which the catalyst converts light energy into chemical energy after receiving photons of specific energy. It uses ultraviolet light or visible light of different wavelengths to irradiate semiconductors to generate a variety of active oxygen radicals. These free radicals are highly active. Can effectively degrade org...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06B01J35/02C02F1/30C02F101/30C02F101/38B01J35/00
CPCB01J23/06C02F1/30C02F2101/30C02F2101/38C02F2305/10B01J35/50B01J35/39Y02W10/37
Inventor 纪丽丽景花郭健蔡璐王亚宁
Owner ZHEJIANG OCEAN UNIV
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