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Preparation method of rod-shaped bimetallic-based composite anode material

A composite anode and bimetal technology, which is applied in anodic oxidation, chemical instruments and methods, electrolytic organic material coating, etc., can solve the problems of limited application due to price factors, complicated preparation process, and long preparation time.

Active Publication Date: 2015-10-07
KUNMING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Plating precious metals on the substrate, such as gold, platinum, palladium, silver, etc. as the intermediate layer, can improve the conductivity of the electrode and strengthen the β-PbO 2 Bonding of coatings to substrates, but price factors limit their application
In order to reduce the cost, some researchers also use other oxides as the intermediate layer, such as tin antimony oxide, manganese oxide, etc., but there are disadvantages such as complicated preparation process, long preparation time, and short service life of the electrode.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: the preparation method of rod-shaped bimetal matrix composite anode material, method steps are as follows:

[0020] (1) Select the rod-shaped titanium-clad aluminum material as the substrate and perform pretreatment: the rod-shaped titanium-clad aluminum substrate is ground and polished, then immersed in an alkaline degreasing agent, degreasing at 50°C for 1 minute, and then washed with tap water. It is placed in an oxalic acid solution with a concentration of 20% by weight and boiled for 2 hours, taken out of tap water and cleaned for use; the alkaline degreasing agent is formed by mixing trisodium phosphate 30g / L and sodium silicate 15g / L;

[0021] (2) Preparation of conductive polyaniline film (PAN) middle layer: place the treated rod-shaped titanium-clad aluminum substrate in the electrolyte filled with nitrogen for 30 minutes, use a double-pulse power supply, and use the treated rod-shaped titanium-clad aluminum substrate as the anode. Stainless steel...

Embodiment 2

[0025] Embodiment 2: the preparation method of rod-shaped bimetal matrix composite anode material, method steps are as follows:

[0026] (1) The substrate is made of rod-shaped titanium-clad copper material. Pre-treatment of the substrate material: after polishing the rod-shaped titanium-clad copper substrate, immerse it in an alkaline degreaser, treat it at 50°C for 3 minutes to remove oil, and then wash it with tap water. Place it in a 15% oxalic acid solution by weight and boil it for 2 hours, take it out and wash it with tap water for later use; the alkaline degreasing agent is formed by mixing 40 g / L of trisodium phosphate and 20 g / L of sodium silicate ;

[0027] (2) Preparation of conductive polyaniline film (PAN) middle layer: place the treated rod-shaped titanium copper-clad substrate in an electrolyte filled with nitrogen for 30 minutes, use a double-pulse power supply, and use the treated rod-shaped titanium-coated copper substrate as the anode. Stainless steel is the...

Embodiment 3

[0031] Embodiment 3: the preparation method of rod-shaped bimetal matrix composite anode material, method steps are as follows:

[0032] (1) The substrate is made of rod-shaped titanium-clad aluminum material, and the pre-treatment of the substrate material: After grinding and polishing the rod-shaped titanium-clad aluminum substrate, immerse it in an alkaline degreaser, treat it at 50°C for 2 minutes for degreasing, and wash it with tap water. Put it in an oxalic acid solution with a concentration of 20% by weight and boil for 1.5 hours, take out the tap water and wash it for later use; the alkaline degreasing agent is formed by mixing 60 g / L of trisodium phosphate and 10 g / L of sodium silicate;

[0033] (2) Preparation of conductive polyaniline film (PAN) middle layer: place the treated rod-shaped titanium-clad aluminum substrate in an electrolyte filled with nitrogen for 30 minutes, use a double pulse power supply, use the treated substrate as the anode, and stainless steel ...

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Abstract

The invention discloses a preparation method of a rod-shaped bimetallic-based composite anode material. The preparation method comprises carrying out surface activation treatment on a rod-shaped bimetallic base, preparing a conductive polyaniline membrane (PAN) interface layer on the rod-shaped bimetallic base by an impulse current method, and preparing micrometer particle WO3-doped PAN / PbO2-WO3 inert composite anode material by an anodic oxidation method. The rod-shaped bimetallic-based composite anode material has excellent electrocatalytic activity in electrochemical degradation of organic waste water, realizes thorough degradation of organic waste water, and has high corrosion resistance and a long service life.

Description

technical field [0001] The invention relates to the technical field of metal anode material preparation, in particular to a method for preparing metal anode materials used for organic wastewater treatment. Background technique [0002] Electrocatalytic oxidation treatment of wastewater belongs to advanced oxidation technology, its equipment is simple, no secondary pollution, easy to combine with other methods. The core technology of the electrocatalytic oxidation method is the selection of anode materials. A good anode material should have the characteristics of good electrical conductivity, high electrocatalytic activity, corrosion resistance, and stable performance. Common electrodes are mainly insoluble metal oxide electrodes, such as SnO 2 , PbO 2 , Sb 2 o 3 , RuO 2 , IrO 2 , MnO 2 Wait. of which PbO 2 Due to strong oxidation, good conductivity, high electrocatalytic activity, especially high oxygen evolution overpotential, the electrode has broad application pr...

Claims

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Application Information

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IPC IPC(8): C25D15/00C25D11/02C25D9/02C25D5/18C02F1/461
Inventor 范莹莹陈阵郭忠诚余强李学龙谭宁晁恒
Owner KUNMING UNIV OF SCI & TECH
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