Preparation method of neodymium-doped lead dioxide electrode

A technology doped with lead dioxide and neodymium, applied in chemical instruments and methods, electrolytic coatings, liquid chemical plating, etc., can solve the problems of poor stability of the active layer, short service life, poor catalytic performance, etc., and achieve OH capacity Strong, low operating cost, strong degradation performance

Inactive Publication Date: 2015-03-25
NANTONG AGRI COLLEGE
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Problems solved by technology

Ti / IrO 2 -Ta 2 o 5 The electrode life is long, but the oxygen evolution potential is low, the price is high, and the catalytic performance is poor; Ti / SnO 2 Electrode catalytic performance is good, but the service life is short; Ti / PbO 2 The electrode is used as an anode material, and its oxygen evolution potential can be above 1.8 V. It has the characteristics of high oxygen evolution potential, strong oxidation ability, good conductivity, simple preparation method, low cost, good stability, and large-area preparation. Refractory organic matter in industrial wastewater has good electrocatalytic oxidation degradation ability
[0004] But during use, the researchers found that Ti / PbO 2 The electrode activity needs to be further improved, and there are still disadvantages such as poor binding force with the substrate, poor stability of the active layer, and short electrode life.

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  • Preparation method of neodymium-doped lead dioxide electrode
  • Preparation method of neodymium-doped lead dioxide electrode
  • Preparation method of neodymium-doped lead dioxide electrode

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specific Embodiment 1

[0034] A method for preparing a neodymium-doped lead dioxide electrode. The neodymium-doped lead dioxide electrode uses titanium as a base, and the titanium base is a titanium sheet. After the titanium substrate is pretreated by grinding and etching, its surface is sequentially plated with a tin-antimony intermediate layer and a neodymium-containing oxide β -PbO 2 Crystal active layer; the preparation method includes sandblasting and polishing the surface of the titanium substrate, oxalic acid etching pretreatment, the surface of the substrate after the pretreatment is prepared by brushing thermal decomposition method to prepare the tin antimony oxide intermediate layer, and then in the prepared Electrodeposition is used in the electroplating solution to coat the surface of the intermediate layer with neodymium oxide β -PbO 2 Crystal active layer, thereby preparing the neodymium-doped lead dioxide electrode.

[0035] The method includes the following specific steps:

[0036] (1) Pr...

specific Embodiment 2

[0042] A method for preparing a neodymium-doped lead dioxide electrode. The neodymium-doped lead dioxide electrode uses titanium as a base, and the titanium base is a titanium tube. After the titanium substrate is pretreated by grinding and etching, its surface is sequentially plated with a tin-antimony intermediate layer and a neodymium-containing oxide β -PbO 2 Crystal active layer; the preparation method includes sandblasting and polishing the surface of the titanium substrate, oxalic acid etching pretreatment, the surface of the substrate after the pretreatment is prepared by brushing thermal decomposition method to prepare the tin antimony oxide intermediate layer, and then in the prepared Electrodeposition is used in the electroplating solution to coat the surface of the intermediate layer with neodymium oxide β -PbO 2 Crystal active layer, thereby preparing the neodymium-doped lead dioxide electrode.

[0043] The method includes the following specific steps:

[0044] (1) Pre...

specific Embodiment 3

[0050] A method for preparing a neodymium-doped lead dioxide electrode. The neodymium-doped lead dioxide electrode uses titanium as a base, and the titanium base is a titanium mesh. After the titanium substrate is pretreated by grinding and etching, its surface is sequentially plated with a tin-antimony intermediate layer and a neodymium-containing oxide β -PbO 2 Crystal active layer; the preparation method includes sandblasting and polishing the surface of the titanium substrate, oxalic acid etching pretreatment, the surface of the substrate after the pretreatment is prepared by brushing thermal decomposition method to prepare the tin antimony oxide intermediate layer, and then in the prepared Electrodeposition is used in the electroplating solution to coat the surface of the intermediate layer with neodymium oxide β -PbO 2 Crystal active layer, thereby preparing the neodymium-doped lead dioxide electrode.

[0051] The method includes the following specific steps:

[0052] (1) Pre...

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Abstract

The invention discloses a preparation method of a neodymium-doped lead dioxide electrode. The preparation method comprises the following steps: performing polishing and etching pretreatment on a titanium substrate and then coating the surface of the titanium substrate with a tin-antimony middle layer by use of a pyrolytic process, and furthermore, and electroplating a neodymium oxide-containing beta-PbO2 crystal active layer by use of an electrodeposition method, thereby forming the neodymium-doped lead dioxide electrode. According to the preparation method of the neodymium-doped lead dioxide electrode, the surface structure of the electrode is improved by virtue of the doping of neodymium, the catalytic oxidizing activity and the stability of the electrode are improved, and the prepared electrode is capable of effectively degrading organic matters, good in treatment effect, high in current efficiency and low in cost, and has an excellent application value.

Description

Technical field [0001] The invention belongs to the field of environmental wastewater treatment, and specifically relates to a method for preparing a neodymium-doped lead dioxide electrode. Background technique [0002] Electrochemical water treatment technology is widely used in the treatment of refractory organics because of its advantages of no or little consumption of chemical reagents, no secondary pollution, easy operation, and ability to mineralize almost all organics in the treatment of organic wastewater. In the electrochemical reactor, the electrode is at the core. The high reaction rate and good selectivity exhibited by electrode materials when degrading organic matter are important indicators for evaluating their electrocatalytic properties. [0003] The Dimensionally Stable Anode (DSA) uses titanium and other metals with good corrosion resistance as the substrate, and the substrate material is coated with a catalytic coating and modified by element doping to improve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/04C23C20/08C25D11/26C02F1/461
CPCC23C28/04C02F1/46109C02F2001/46142C23C18/1208C25D9/06
Inventor 乔启成陈泽宇尹花
Owner NANTONG AGRI COLLEGE
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