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Method for microwave-assisted synthesis of Z-type heterojunction catalytic material

A catalytic material and microwave-assisted technology, applied in chemical instruments and methods, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve problems such as hazards, adverse effects on the environment and ecosystems, and achieve reduced side reactions and good stability performance and reusability, simple method

Pending Publication Date: 2022-06-24
银睿(浙江)环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dinotefuran residues not only have adverse effects on the environment and ecosystem, but also cause persistent harm to human health through enrichment in the food chain

Method used

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  • Method for microwave-assisted synthesis of Z-type heterojunction catalytic material
  • Method for microwave-assisted synthesis of Z-type heterojunction catalytic material
  • Method for microwave-assisted synthesis of Z-type heterojunction catalytic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 0.2425g of bismuth nitrate pentahydrate, 0.1g of L-cysteine, 0.5g of sodium tartrate and 0.2335g of sodium selenite were placed in a special flask, and 30mL of ethylene glycol was added to it; the flask was placed in a stirrer Stir with 500rmp for 5min; put the flask into the microwave reactor, under the condition of 1000W, microwave heating to 180°C and then maintain the temperature with 300W, the total reaction is 20min, and the precipitate is obtained. After the reaction was completed, the flask was placed in a stirrer and stirred at 600 rmp for 15 min. The obtained precipitation was transferred into a beaker, and was washed several times with deionized water and ethanol; put into a drying temperature of 80 ° C vacuum drying oven, can obtain (Bi 2 (Se, S) 3 ). Then weigh 0.01g of Bi 2 (Se, S) 3 Put 0.2425g of bismuth nitrate pentahydrate, 0.1g of potassium chloride and 30mL of ethylene glycol into a special flask;

[0052] Placed on a magnetic stirrer, stirred a...

Embodiment 2

[0054] Weigh 0.2425g of bismuth nitrate pentahydrate, 0.1g of L-cysteine, 0.5g of sodium tartrate, 0.2335g of sodium selenite, and 30mL of ethylene glycol into a special flask; put the flask into a stirrer with 500rmp Stir for 5min; put the flask into a microwave reactor and heat it to 180°C with a power of 1000W, then maintain the temperature with 300W, and the total reaction is 20min. After the reaction, put the flask into a stirrer and stir at 600 rmp for 15 min; transfer the solution in the flask into a beaker, wash it several times with deionized water and ethanol; put the sample into a vacuum drying oven, and the drying temperature is 80 ° C; Treat the dried samples as pharmaceuticals (Bi 2 (Se, S) 3 ), provides raw material for the next step synthesis; Weigh the Bi of 0.05g 2 (Se, S) 3 , 0.2425g of bismuth nitrate pentahydrate, 0.2335g of sodium selenite, 0.1g of potassium chloride, and 30mL of ethylene glycol were put into a special flask; the flask was placed in a ...

Embodiment 3

[0056] Weigh 0.2425g of bismuth nitrate pentahydrate, 0.1g of L-cysteine, 0.5g of sodium tartrate, 0.2335g of sodium selenite, and 30mL of ethylene glycol into a special flask; put the flask into a stirrer with 500rmp Stir for 5min; put the flask into a microwave reactor and heat it to 180°C with a power of 1000W, then maintain the temperature with 300W, and the total reaction is 20min. After the reaction, the flask was put into a stirrer and stirred at 600 rmp for 15 min; the solution in the flask was transferred to a beaker, and washed several times with deionized water and ethanol; the sample was placed in a vacuum drying oven, and the drying temperature was 80 °C. Treat the dried samples as pharmaceuticals (Bi 2 (Se, S) 3 ), provides raw material for the next step synthesis; Weigh the Bi of 0.1g 2 (Se, S) 3 , 0.2425g of bismuth nitrate pentahydrate, 0.1g of potassium chloride and 30mL of ethylene glycol were put into a special flask; the flask was put into a stirrer and...

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Abstract

The technical scheme belongs to the field of environmental engineering, and relates to the technical field of advanced catalytic oxidation water treatment, in particular to a microwave-assisted synthesis method of a Z-type heterojunction catalytic material, bismuth nitrate, sodium selenite, L-cysteine and sodium tartrate are taken as raw materials, a microwave reaction system is assisted, and a Bi2 (Se, S) 3 / BiOCl Z-type heterojunction catalyst is obtained. According to the preparation method provided by the technical scheme, green and safe raw materials are used, the method is simple, the process is easy to operate, and continuous production can be realized; meanwhile, the preparation method is low in temperature requirement and low in energy consumption during reaction.

Description

technical field [0001] The technical solution belongs to the field of environmental engineering, relates to the technical field of advanced catalytic oxidation water treatment, and specifically relates to a microwave-assisted method for synthesizing a Z-type heterojunction catalytic material. Background technique [0002] For a long time in the past, research in the field of water treatment in the world has focused on certain priority control pollutants, such as persistent organic pollutants, pesticides, industrial chemicals and heavy metals. In modern agricultural production, people often use a class of drugs that can kill harmful animals and plants or harmful bacteria and viruses to protect and promote the growth of crops, causing certain pollution and damage to the natural ecological environment. Among them, dinotefuran is the third-generation nicotinic insecticide developed by Japan's Mitsui Chemicals. It is different from the existing nicotinic insecticides in chemical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/057B01J27/06B01J35/00B01J35/08B01J37/34C02F1/30C02F1/72C02F101/30C02F101/38
CPCB01J37/346B01J27/0573B01J27/06C02F1/30C02F1/725C02F2305/10C02F2101/30C02F2101/38B01J35/51B01J35/39
Inventor 施银桃徐海明夏东升刘学超秦海兰
Owner 银睿(浙江)环保科技有限公司
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