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Ni-doped tin dioxide microporous anode, preparation method and application

A tin dioxide, anode technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the difficulty of Ti/BDD electrode preparation, electrode catalytic activity, limited surface area, influence Electrode catalytic efficiency and other issues, to achieve the effect of improving catalytic activity and mechanical stability, fast and efficient phenol, and long service life

Active Publication Date: 2017-02-15
BEIJING UNIV OF TECH
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  • Application Information

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Problems solved by technology

Due to Ti / PbO 2 The electrode may dissolve lead ions during the electrolysis process, which will cause secondary pollution of the water body. However, the preparation of Ti / BDD electrodes is difficult and expensive, which is not conducive to industrial application and development. Therefore, Ti / SnO 2 -Sb electrode has become the main option for electrochemical treatment of refractory organic wastewater, but its catalytic activity and service life need to be further improved
[0005] Current Ti / SnO 2 -Sb electrodes are mostly prepared by coating-calcination method, the electrode catalytic activity and surface area of ​​the prepared electrode are limited, which will affect the catalytic efficiency of the electrode

Method used

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  • Ni-doped tin dioxide microporous anode, preparation method and application
  • Ni-doped tin dioxide microporous anode, preparation method and application
  • Ni-doped tin dioxide microporous anode, preparation method and application

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Embodiment 1

[0026] 1. Preparation of electroplating solution: SbCl 3 The powder is dissolved in concentrated HCl, concentrated HCl: SbCl 3 The mass ratio is 350:9, adding a certain amount of SnCl 4 ·5H 2 O, fully dissolve with an appropriate amount of water, and then add a certain amount of NiSO 4 , Sn:Sb:Ni molar ratio is 100:9:1. Pour the citric acid into the solution, so that the citric acid in the solution is 0.1-0.5M, and ultrasonically mix it thoroughly. Then, 3-aminopropyltrimethoxysilane was added dropwise thereto, the mass percentage of 3-aminopropyltrimethoxysilane being 0.05%, and ultrasonically mixed thoroughly. Set aside for a period of time.

[0027] 2. Pretreatment of mp-Ti substrate: soak the mp-Ti board in 10% NaOH at 85°C for 0.5h to remove oil, wash it with distilled water until neutral; soak it in 5% oxalic acid solution, keep it at 85°C 0.5h, rinse with twice distilled water and set aside.

[0028] 3. Pulse composite electrodeposition: use the solution configur...

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Abstract

The invention provides a Ni-doped TiO2 microporous anode, a preparation method and an application, and belongs to the technical field of electrochemical water treatment. Sb-Sn-Ni is directly composited and deposited on a microporous Ti (mp-Ti) plate used as the substrate in a pulse composite electrodeposition manner, then the deposited material is calcined under a muffle for 2 hours, and the Ti / Sb-SnO2-Ni electrocatalytic electrode is prepared. The electrode is used for electrocatalytic oxidation of phenol in water. Results show than the electrode has high phenol removal capacity and high organic matter mineralization rate. The prepared electrode has high catalytic activity, good stability and long service life, thereby having better application prospect.

Description

technical field [0001] The invention relates to a microporous anode, in particular to a nickel-doped tin dioxide microporous anode, a preparation method and application, and belongs to the technical field of electrochemical water treatment. Background technique [0002] Phenol is an important raw material for organic synthesis, which can be used to manufacture phenolic resin, bisphenol A and caprolactam; phenol can also be used to produce explosives, fertilizers, paints, rubber, and other products. With the development of the economy, the amount of phenolic wastewater discharged into the environment is increasing year by year. Phenol-containing wastewater is very harmful to humans and other organisms. Low concentrations of phenol can denature proteins, while high concentrations of phenol can coagulate proteins. Phenol can also quickly enter the body through damaged skin and mucous membranes to cause systemic poisoning. The U.S. Environmental Protection Agency (EPA) has lis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C25D3/60C25D5/18C25D5/50C02F101/34
Inventor 孙治荣魏巍麻晓越
Owner BEIJING UNIV OF TECH
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