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Preparation method of Blue-TiO2/CNT-PbO2 electrode material doped with carbon nanotubes

A carbon nanotube and electrode material technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve the problem of unstable chemical composition and properties of the electrode surface, easy deactivation of the electrode, Short service life and other problems, to solve the effect of lead layer shedding, stable electrode structure and high conductivity

Active Publication Date: 2021-03-02
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the chemical composition and properties of the PbO2 electrode surface are not stable enough, the electrode is easily deactivated, and the coating is easy to fall off under high pressure, and the service life is short. Doping carbon nanotubes changes the PbO 2Lattice size and orientation make it more stable

Method used

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  • Preparation method of Blue-TiO2/CNT-PbO2 electrode material doped with carbon nanotubes
  • Preparation method of Blue-TiO2/CNT-PbO2 electrode material doped with carbon nanotubes
  • Preparation method of Blue-TiO2/CNT-PbO2 electrode material doped with carbon nanotubes

Examples

Experimental program
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Effect test

Embodiment 1

[0036] The titanium plate was selected as the electrode substrate, and the titanium plate substrate was anodized twice in the ethylene glycol electrolyte of ammonium fluoride and distilled water, and then electrochemically reduced in 10% formic acid solution for 5 minutes to prepare the blue electrode. Nanotubes, CNT-PbO on the basis of blue nanotubes 2 Co-deposition to prepare Blue-TiO 2 / CNT-PbO 2 Electrode material:

[0037] First, pretreat the titanium plate (40mm×40mm×1mm), quickly polish the titanium plate with sandpaper (320, 600, 1500 mesh), and then measure 25.2mL of concentrated sulfuric acid to 200mL to make 20% concentrated sulfuric acid , continue to digest in the solution for 30min, rinse with deionized water after cooling; etching: configure 20% oxalic acid solution, (weigh 20g of oxalic acid, and dilute to 100mL with distilled water) place the titanium plate vertically in oxalic acid at 98°C Etched in the solution for 2.0h, and cleaned with a large amount of...

Embodiment 2

[0041] Embodiment 2 (comparative example)

[0042] The difference from Example 1 is: in the preparation of Blue-TiO 2 The calcination temperature set at the time is 400°C, and the prepared material is marked as Blue-TiO 2 Calcined at 400°C.

Embodiment 3

[0043] Embodiment 3 (comparative example)

[0044] The difference from Example 1 is: in the preparation of Blue-TiO 2 The calcination temperature set at 500°C, the prepared material is marked as Blue-TiO 2 Calcined at 500°C.

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Abstract

The invention discloses a preparation method of a Blue-TiO2 / CNT-PbO2 electrode material doped with carbon nanotubes, and belongs to the technical field of electrocatalysis. According to the preparation method, a titanium plate which is low in price and wide in source is used as a raw material for electrocatalysis, and the carbon nanotube doped Blue-TiO2 / CNT-PbO2 electrode material taking the titanium plate as the substrate is used, so that the preparation cost and the preparation complexity are reduced; blue nanotubes are prepared on the basis of the titanium plate, a higher specific surface area and higher conductivity than common nanotubes are achieved, and the performance is more stable. PbO2 electro-deposition is carried out on the basis, the electrode material with higher catalytic activity and conductivity is prepared, the preparation process is simple, and large-area preparation and wide application can be achieved; the carbon nanotubes have good dispersibility, and the carbon nanotubes can influence the lead deposition process and hinder the continuous growth of lead on the titanium nanotubes, so that crystal particles on the surface of the electrode are more compact and uniform, the electrode structure is more stable, and the problem that an electrode lead layer falls off due to the difference of the surface structures of titanium and lead is solved.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to carbon nanotube Blue-TiO 2 / PbO 2 The invention relates to a preparation method of an electrode material, which belongs to the technical field of electrocatalysis. Background technique [0002] With the rapid development of urbanization and industrialization, the chemical industry is also developing continuously. The number of artificially synthesized organic substances is about 5 million. While synthetic organic matter brings convenience to our life, it also causes a large amount of water, gas, and solid organic pollution in the production, sales, and use links. The severity, nature, and harm of it have exceeded people's imagination. For the treatment of highly degradable industrial wastewater with complex components and high conductivity, the general biological, physical and chemical methods have poor treatment effects. Advanced Oxidation Techniques (AOP) are often used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461
CPCC02F1/46109C02F2001/46142
Inventor 海热提·涂尔逊冯瑞枝范荆凯许阳春李思琪武皓阳刘士迪
Owner BEIJING UNIV OF CHEM TECH
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