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Method for preparing composite anode material

A composite anode and plate technology, applied in chemical instruments and methods, textile industry wastewater treatment, water/sewage treatment, etc. The effect of improving the current efficiency

Inactive Publication Date: 2012-12-26
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still shortcomings such as short service life of the electrode and easy peeling off of the coating.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the preparation method of composite anode material, concrete operation is as follows:

[0026] 1. The base material is made of stainless steel plate. Pre-treatment of the base material: polish the stainless steel plate with sandpaper and immerse it in an industrial alkaline degreasing agent (mix trisodium phosphate 40g / L and sodium silicate 15g / L, at 50°C, Treat for 1 minute) to degrease, wash with tap water and set aside;

[0027] 2. Preparation of stainless steel substrate with cobalt interlayer

[0028] Immerse the treated stainless steel plate in the immersion solution for 15s, take it out and dry it at 100°C, then immerse and dry it again, and repeat the treatment 10 times. The immersion solution includes sodium hydroxide (NaOH) 30g / L, lead oxide ( PbO) 20g / L, ferric chloride (FeCl 3 ) 2g / L, cobalt dichloride (CoCl 2 ) 10g / L, potassium sodium tartrate (KOCO(CHOH) 2 COONa) 50g / L;

[0029] 3. Thermal decomposition: heat-treat the impregnated and dr...

Embodiment 2

[0036] Embodiment 2: the preparation method of composite anode material, concrete operation is as follows:

[0037] 1. The substrate is made of stainless steel plate, and the pretreatment of the substrate material: polish the titanium plate with sandpaper and immerse it in an industrial alkaline degreaser (mix trisodium phosphate 40g / L and sodium silicate 15g / L, and treat it at 50°C 3 minutes) to degrease, wash with tap water and set aside;

[0038] 2. Preparation of titanium substrate with cobalt-containing intermediate layer

[0039] Immerse the treated stainless steel plate in the immersion solution for 10s, take it out and dry it at 80°C, then immerse and dry it again, and repeat the treatment 15 times. The immersion solution includes sodium hydroxide (NaOH) 25g / L, lead oxide ( PbO) 15g / L, ferric chloride (FeCl 3 ) 3g / L, cobalt dichloride (CoCl 2 ) 16g / L, potassium sodium tartrate (KOCO(CHOH) 2 COONa) 40g / L;

[0040] 3. Thermal decomposition: heat-treat the impregnate...

Embodiment 3

[0046] Embodiment 3: the preparation method of composite anode material, concrete operation is as follows:

[0047] 1. The substrate is made of titanium plate, and the pretreatment of the substrate material: polish the titanium plate with sandpaper and immerse it in a commercially available industrial alkaline degreaser for degreasing, and then wash it with tap water before use;

[0048] 2. Preparation of titanium substrate with cobalt-containing intermediate layer

[0049] Immerse the treated titanium plate in the immersion solution for 15s, take it out and dry it at 90°C, then immerse and dry it again, and repeat the treatment 12 times. The immersion solution includes sodium hydroxide (NaOH) 20g / L, lead oxide ( PbO) 10g / L, ferric chloride (FeCl 3 ) 1g / L, cobalt dichloride (CoCl 2 ) 20g / L, potassium sodium tartrate (KOCO(CHOH) 2 COONa) 30g / L;

[0050] 3. Thermal decomposition: heat-treat the impregnated and dried titanium plate at 550°C for 3 hours to obtain a titanium su...

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Abstract

The invention discloses a method for preparing a composite anode material. The method comprises the following steps of: taking a polished and deoiled conductive material as a matrix, preparing a cobalt-bearing intermediate layer through immersion, drying and thermal decomposition methods, and preparing a conductive Co / PbO2-MoO3-based inert composite anode material doped with micron molybdenum trioxide through an anode oxidization method on the intermediate layer; owing to the addition of molybdenum trioxide and a surfactant, the surface active layer of an electrode is compact and flat, the crystalline particle is exquisite, the specific surface area is increased, and the catalytic activity of the electrode is enhanced; when the electrode material is taken as an anode for treating organic wastewater, organic pollutants are quickly oxidized and degraded, so that the current efficiency is improved, and the electricity consumption is effectively lowered; and due to the arrangement of the cobalt-bearing intermediate layer, the adhesion force between the surface active layer and a substrate can be enhanced, the corrosion resistance of the electrode is improved, and the service life of the electrode is effectively prolonged.

Description

technical field [0001] The invention relates to a preparation method of a composite anode material, in particular to a conductive base Co / PbO 2 -MoO 3 The invention discloses a preparation method of an inert composite anode material, which belongs to the technical field of electrochemical degradation of organic wastewater. Background technique [0002] Electrocatalytic oxidation treatment of wastewater belongs to advanced oxidation technology, which was gradually developed in the 1980s. The key to this technology is to select electrode materials with excellent electrocatalytic activity, strong corrosion resistance, stable performance, and good conductivity. Common electrodes are mainly insoluble metal oxide electrodes, the common ones are SnO 2 , PbO 2 , Sb 2 o 3 , RuO 2 , IrO 2 , MnO 2 Wait. of which PbO 2 The electrode has a broad application prospect in the electrochemical catalytic degradation of organic pollutants due to its strong oxidizing property, good el...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F1/72C02F103/30
Inventor 范莹莹陈阵余强陆丽芳廖登辉
Owner KUNMING UNIV OF SCI & TECH
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