Method for cooperatively degrading organic matters by visible light photoelectric-Fenton

A technology of synergistic degradation and visible light, applied in the direction of protection devices against harmful chemicals, etc., can solve the problems of high cost, human injury, hindering popularization and application, etc., to achieve the effect of simple operation, reducing compounding, and improving photocatalytic efficiency.

Active Publication Date: 2013-12-18
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is still limited to the use of ultraviolet light. The cost of ultraviolet light is high, it is easy to cause damage to the

Method used

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  • Method for cooperatively degrading organic matters by visible light photoelectric-Fenton
  • Method for cooperatively degrading organic matters by visible light photoelectric-Fenton

Examples

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Example Embodiment

[0027] Example 1:

[0028] Will purity> 99.6% of Ti-based plates are polished with 500#, 1000#, 1500# metallographic sandpaper in sequence until the surface is smooth, and then immersed in the volume ratio of HF: HNO 3 : H 2 Chemical polishing is carried out in a polishing solution of O=1:4:5 for 30 s, and then acetone and pure water are used for cleaning in an ultrasonic cleaner. The treated Ti-based plate is used as the anode, the graphite electrode is used as the cathode, the distance between the anode and the cathode is 4cm, and NH 4 The mixed solution of F and glycerol is used as the electrolyte, the volume ratio of glycerol to water is 1:9, containing NH 4 The concentration of F is 0.5 wt%. Use copper wires as wires to connect the two stages to a DC stabilized power supply for electrochemical anodization. In this reaction, the control voltage is 30 V, and the anodizing time is 90 min to obtain amorphous mesoporous TiO 2 Thin-film electrode; after high temperature calcinatio...

Example Embodiment

[0031] Example 2:

[0032] Will purity> 99.6% of Ti-based plates are polished with 500#, 1000#, 1500# metallographic sandpaper in sequence until the surface is smooth, and then immersed in the volume ratio of HF: HNO 3 : H 2 Chemical polishing is carried out in a polishing solution of O=1:4:5 for 30 s, and then acetone and pure water are used for cleaning in an ultrasonic cleaner. The treated Ti-based plate is used as the anode, the graphite electrode is used as the cathode, the distance between the anode and the cathode is 5cm, and NH 4 The mixed solution of F and glycerol is used as the electrolyte, the volume ratio of glycerol to water is 1:9, containing NH 4 The concentration of F is 0.3wt%. Use copper wires as wires to connect the two stages to a DC stabilized power supply for electrochemical anodization. In this reaction, the control voltage is 10 V, and the anodizing time is 150 min to obtain amorphous mesoporous TiO 2 Thin-film electrode; after high temperature calcinatio...

Example Embodiment

[0035] Example 3:

[0036] Will purity> 99.6% of Ti-based plates are polished with 500#, 1000#, 1500# metallographic sandpaper in sequence until the surface is smooth, and then immersed in the volume ratio of HF: HNO 3 : H 2 Chemical polishing is carried out in a polishing solution of O=1:4:5 for 30 s, and then acetone and pure water are used for cleaning in an ultrasonic cleaner. The treated Ti-based plate is used as the anode, the graphite electrode is used as the cathode, the distance between the anode and the cathode is 3cm, and NH 4 The mixed solution of F and glycerol is used as the electrolyte, the volume ratio of glycerol to water is 1:9, containing NH 4 The concentration of F is 0.2wt%. Use copper wires as wires to connect the two stages to a DC stabilized power supply for electrochemical anodization. In this reaction, the control voltage is 40 V, and the anodization time is 90 min to obtain amorphous mesoporous TiO 2 Thin-film electrode; after high temperature calcinati...

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Abstract

The invention discloses a method for cooperatively degrading organic matters by visible light photoelectric-Fenton. According to the method, a visible light photoelectric-Fenton system formed by visible light, photocatalysis and electric-Fenton is used and the organic matters are put into the system to be degraded. The method comprises the specific steps of (1) preparing a mesoporous TiO2 thin film electrode; (2) forming the visible light photoelectric-Fenton system; and (3) degrading the organic matters. According to the method, a photocatalysis technology, a photoelectric oxidization technology and a Fenton oxidization technology are combined and the visible light is introduced to form the visible light photoelectric-Fenton system; the self-made mesoporous TiO2 thin film electrode is used in the visible light photoelectric-Fenton system to realize the mutual cooperative effect of the photocatalysis and the electric-Fenton under the visible light, so that the treatment effect on organic pollutants by the whole system is improved.

Description

technical field [0001] The invention belongs to the field of environmental protection and governance, and relates to a method for degrading organic matter by using a visible light photoelectric-Fenton system. Background technique [0002] Photocatalysis has been widely used in the degradation of organic matter in the environment, nano-TiO 2 Photocatalysts are favored by researchers due to their good catalytic performance, non-toxicity, and low price. Traditional TiO 2 The photocatalyst is in the form of powder, which has problems such as difficult separation of the catalyst and easy to cause secondary pollution. Mesoporous TiO 2 , due to the advantages of high specific surface area, ordered pore structure, controllable pore size, and easy surface modification, it can solve the problem of traditional TiO 2 Photocatalysis has problems such as difficult separation of catalysts and easy to cause secondary pollution. [0003] Patent 200910306567.0 discloses the preparation m...

Claims

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Application Information

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IPC IPC(8): A62D3/11A62D101/20
Inventor 喻泽斌彭振波孙玲芳胡晓
Owner GUANGXI UNIV
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