Preparation method of titanium-based composite PbO2 anode for water treatment

A technology for water treatment and anode, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of short service life, poor electrode stability, low electrode electrocatalytic activity, etc. The effect of strong wear resistance, reduced grain size and extended service life

Pending Publication Date: 2021-05-25
西安泰金新能科技股份有限公司
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Problems solved by technology

[0003] In order to solve the problems of poor electrode stability, short service life and low electrocatalytic activity of titanium-based lead dioxide electrodes in the process of water treatment, the purpose of the present invention is to provide a titanium-based composite PbO electrode for water treatment. 2 The preparation method of the anode, whose composite interlayer expression is β-PbO 2 -SnO 2 , β-PbO 2 -Ta 2 o 5

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  • Preparation method of titanium-based composite PbO2 anode for water treatment
  • Preparation method of titanium-based composite PbO2 anode for water treatment
  • Preparation method of titanium-based composite PbO2 anode for water treatment

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[0024] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0025] Firstly, a single layer of β-PbO was prepared in one step by using the polished, alkali-washed and pickled twill titanium mesh as the substrate. 2 -SnO 2 Composite interlayer, and then Ti / β-PbO 2 -SnO 2 The electrode material is the anode, the stainless steel with the same size is the cathode, and the anode is electrooxidized to prepare β-PbO 2 Active layer, so as to obtain Ti / β-PbO with dense, uniform, stable and active surface 2 -SnO 2 / β-PbO 2 Dimensional stable anode material. β-PbO 2 -SnO 2 Composite intermediate layer preparation process parameters: Pb(NO 3 ) 2 : 0.45mol / L, SBS: 30mg / L, SnO 2 : 10g / L, deposition thickness control 40μm, DC deposition anode current density: 1A / dm 2 , the time is 1h, the stirring rate is 800r / min, the electrodeposition temperature is 50°C, and the electrodeposition time is 1h. After the completion, ...

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Abstract

The invention belongs to the technical field of preparation of lead dioxide dimensionally stable anodes, and particularly relates to a preparation method of a titanium-based composite PbO2 anode for water treatment. According to the preparation method of the titanium-based composite PbO2 anode for water treatment, pretreated porous titanium serves as an anode, a stainless steel plate with the same area serves as a cathode, the anode and the cathode are placed in a lead nitrate solution, active particles Ta2O5 and SnO2 are added, anode co-deposition is carried out to obtain a beta-PbO2 composite middle layer, beta-PbO2-Ta2O5 and a beta-PbO2-SnO2 composite middle layer, then anode electrode position is carried out to obtain a PbO2 active layer, and finally, the coating dimensionally stable anode (DSA) with the structure of Ti / beta-PbO2-Ta2O5 / PbO2 and the structure of Ti / beta-PbO2-SnO2 / PbO2 is obtained. The problems that a titanium-based lead dioxide electrode is poor in electrode stability, short in service lifetime and low in electrode electrocatalytic activity in the water treatment use process are solved.

Description

technical field [0001] The invention belongs to the technical field of lead dioxide shape-stable anode preparation, in particular to a titanium-based composite PbO used for water treatment 2 Anode preparation method. Background technique [0002] Lead dioxide has the characteristics of good electrical conductivity similar to metals, good chemical stability, high oxygen evolution potential, high current density, stable size, and good chemical stability in strong acids. Compared with noble metal electrodes, PbO 2 It is a non-precious metal or base metal electrode. As an anode material, it can reduce the input cost. It has a good effect on removing organic pollutants in water treatment, and avoids water pollution caused by a large amount of lead ions produced by corrosion of lead-based electrodes during use. At present, Ti / PbO is usually made of titanium (Ti) as a supporting substrate and made by electrodeposition. 2 Coated flat plate electrode has the advantages of convenien...

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Application Information

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IPC IPC(8): C02F1/461C25D15/00C25D9/06C25D7/00
CPCC02F1/46109C25D15/00C25D9/06C25D7/00C02F2001/46142
Inventor 梁涛王宇飞程坤冯庆韩坤炎宋瑞
Owner 西安泰金新能科技股份有限公司
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