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Preparation method and application for oxygen-vacancy-enriched Bi2WO6/In2O3 heterojunction composite photocatalyst

An in2o3, composite light technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc., can solve the problems of unsatisfactory catalytic efficiency, high content of harmful substances, complex components, etc., to achieve green The effect of environmental protection treatment technology, simple operation and efficient treatment technology

Inactive Publication Date: 2018-06-08
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) The chromium, lead, mercury, arsenic, zinc and other heavy metal salts in the heavy metal wastewater in the dye cannot be biodegraded, they can exist in the natural environment for a long time, and will continue to pass through the food chain and accumulate in the human body
(4) The content of organic matter in wastewater is high, the composition is complex, and the content of harmful substances is high
However, the catalytic efficiency is not ideal

Method used

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  • Preparation method and application for oxygen-vacancy-enriched Bi2WO6/In2O3 heterojunction composite photocatalyst
  • Preparation method and application for oxygen-vacancy-enriched Bi2WO6/In2O3 heterojunction composite photocatalyst
  • Preparation method and application for oxygen-vacancy-enriched Bi2WO6/In2O3 heterojunction composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1)In 2 o 3 Preparation of micron flowers:

[0030] InCl 3 4H 2 O was added to a beaker containing 60ml deionized water and stirred for 30min; 1.2g sodium lauryl sulfate was added to the mixed solution and continued to stir for 30min; then 0.42g urea was added to the mixed solution and stirred for 1h; subsequently, the above mixed solution was transferred Carry out constant temperature thermal reaction in a 120° C. reaction kettle for 12 hours; after the reaction is completed, the temperature is lowered to room temperature, the solid product is washed with deionized water and ethanol, and dried to obtain InOOH. Calcinate InOOH at 500°C for 2h with a heating rate of 2°C / min to remove H 2 O gets pale yellow In 2 o 3 micron flower.

[0031] (2) Bi 2 WO 6 / In 2 o 3 Preparation of heterojunction composite photocatalyst:

[0032] Add 0.2g In 2 o 3 Add to a 50ml beaker containing 0.05g CTAB aqueous solution and stir for 30min; then slowly add 0.0028g Bi(NO 3 ) ...

Embodiment 2

[0035] (1)In 2 o 3 Preparation of micron flowers:

[0036] InCl 3 4H 2 O was added to a beaker containing 60ml deionized water and stirred for 30min; 1.2g sodium lauryl sulfate was added to the mixed solution and continued to stir for 30min; then 0.42g urea was added to the mixed solution and stirred for 1h; subsequently, the above mixed solution was transferred Carry out constant temperature thermal reaction in a 120° C. reaction kettle for 12 hours; after the reaction is completed, the temperature is lowered to room temperature, the solid product is washed with deionized water and ethanol, and dried to obtain InOOH. Calcinate InOOH at 500°C for 2h with a heating rate of 2°C / min to remove H 2 O gets pale yellow In 2 o 3 micron flower.

[0037] (2) Bi 2 WO 6 / In 2 o 3 Preparation of heterojunction composite photocatalyst:

[0038] Add 0.2g In 2 o 3 Add to a 50ml beaker containing 0.05g CTAB aqueous solution and stir for 30min; then slowly add 0.0083g Bi(NO 3 ) ...

Embodiment 3

[0041] (1)In 2 o 3 Preparation of micron flowers:

[0042] InCl 3 4H 2 O was added to a beaker containing 60ml deionized water and stirred for 30min; 1.2g sodium lauryl sulfate was added to the mixed solution and continued to stir for 30min; then 0.42g urea was added to the mixed solution and stirred for 1h; subsequently, the above mixed solution was transferred Carry out constant temperature thermal reaction in a 120° C. reaction kettle for 12 hours; after the reaction is completed, the temperature is lowered to room temperature, the solid product is washed with deionized water and ethanol, and dried to obtain InOOH. Calcinate InOOH at 500°C for 2h with a heating rate of 2°C / min to remove H 2 O gets pale yellow In 2 o 3 micron flower.

[0043] (2) Bi 2 WO 6 / In 2 o 3 Preparation of heterojunction composite photocatalyst:

[0044] Add 0.2g In 2 o 3 Add to a 50ml beaker containing 0.05g CTAB aqueous solution and stir for 30min; then slowly add 0.0139g Bi(NO 3 ) ...

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Abstract

The invention belongs to the technical field of preparation of environmental materials, and specifically provides a preparation method and an application for a Bi2WO6 / In2O3 heterojunction composite photocatalyst. According to a technical scheme of the invention, the preparation method comprises the following steps: step 1, preparation of In2O3 microflower; and step 2, preparation of the Bi2WO6 / In2O3 heterojunction composite photocatalyst. The Bi2WO6 / In2O3 heterojunction composite photocatalyst prepared by using the method provided by the invention is used to degrade rhodamine B in wastewater,and has good photocatalytic activity and stability.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation, in particular to a bismuth tungstate (Bi 2 WO 6 ) modified indium trioxide (In 2 o 3 ) preparation method and application of heterojunction composite photocatalyst. Background technique [0002] In recent years, the world has been very concerned about the deterioration of environmental quality and the imbalance of ecological balance. Human beings are facing the most serious environmental crisis in history. In environmental pollution, most are directly related to the pollution of industry and industrial products. Dye wastewater is one of the main harmful industrial wastewater, which mainly comes from the production industry of dyes and dye intermediates. There are many kinds of dyes, which bring brilliant and colorful colors to people's life and generate huge economic benefits, but also produce a large amount of dye wastewater discharged into the environmental water...

Claims

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Application Information

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IPC IPC(8): B01J23/31B01J35/02C02F1/30
CPCC02F1/30B01J23/002B01J23/31C02F2101/308C02F2305/10B01J2523/00B01J35/00B01J35/30B01J35/39B01J2523/33B01J2523/54B01J2523/69
Inventor 秦莹莹李红卢健黄锦鑫肖博新王宜炜闫永胜李春香
Owner JIANGSU UNIV
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