Manufacture method for chlorine-evolution dimensionally stable anode (DSA) electro-catalytic electrode with three dimensional structure

A three-dimensional structure, electrocatalytic technology, applied in the direction of electrode, electrode shape/type, electrolytic coating, etc., can solve the problems of unreasonable economy, low current utilization rate, etc., achieve large application prospects, avoid impurities and uncertain factors, high The effect of electrocatalytic activity

Active Publication Date: 2012-11-07
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Electrochemical water treatment technology has been produced for more than 40 years, and the main reason why it has not been widely used is that the current utilization rate is not high and the economy is unreasonable.

Method used

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  • Manufacture method for chlorine-evolution dimensionally stable anode (DSA) electro-catalytic electrode with three dimensional structure
  • Manufacture method for chlorine-evolution dimensionally stable anode (DSA) electro-catalytic electrode with three dimensional structure
  • Manufacture method for chlorine-evolution dimensionally stable anode (DSA) electro-catalytic electrode with three dimensional structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of a DSA electrode for three-dimensional structure analysis of chlorine, comprising the steps of:

[0037] (1) Pretreatment of the titanium substrate: Cut the titanium substrate into a 2cm×3cm sheet sample, and polish it with 350 and 600 mesh sandpaper respectively, so that the surface of the titanium substrate presents a silver-white metallic luster, and then clean it with distilled water ultrasonically ( The ultrasonic power is 200w, the frequency is 40KHz); then the titanium substrate is dissolved and soaked in a sodium hydroxide solution with a mass concentration of 20%, heated at 95°C for 1.5 hours, and then ultrasonically cleaned with distilled water (ultrasonic power is 200w, frequency is 40KHz) ; Soak the titanium substrate with an oxalic acid solution with a mass fraction of 20%, and heat at 95°C for 1.5 hours;

[0038] (2) Preparation of titanium dioxide nanotubes on titanium matrix: the pretreated titanium matrix was fixed on the anode usin...

Embodiment 2

[0042] A preparation method of a DSA electrode for three-dimensional structure analysis of chlorine, comprising the steps of:

[0043] (1) Pretreatment of the titanium substrate: Cut the titanium substrate into a 2cm×3cm sheet sample, and polish it with 350 and 600 mesh sandpaper respectively, so that the surface of the titanium substrate presents a silver-white metallic luster, and then clean it with distilled water ultrasonically ( The ultrasonic power is 200w, the frequency is 40KHz); then the titanium substrate is dissolved and soaked in a sodium hydroxide solution with a mass concentration of 20%, heated at 95°C for 1.5 hours, and then ultrasonically cleaned with distilled water (ultrasonic power is 200w, frequency is 40KHz) ; Soak the titanium substrate with a hydrochloric acid solution with a mass fraction of 20%, and heat at 95° C. for 1.5 hours;

[0044] (2) Preparation of titanium dioxide nanotubes on titanium matrix: the pretreated titanium matrix was fixed on the a...

Embodiment 3

[0049] A preparation method of a DSA electrode for three-dimensional structure analysis of chlorine, comprising the steps of:

[0050] (1) Pretreatment of the titanium substrate: cut the titanium substrate into a 2cm×3cm sheet sample, polish it with 350 and 600 mesh sandpaper, so that the surface of the titanium substrate presents a silver-white metallic luster, and then ultrasonically clean it with distilled water (ultrasonic The power is 200w, the frequency is 40KHz); then the titanium substrate is dissolved and soaked in a sodium hydroxide solution with a mass concentration of 20%, heated at 95°C for 1.5 hours, and then ultrasonically cleaned with distilled water; soaked in a sulfuric acid solution with a mass fraction of 20% Titanium substrate, heated at 95°C for 1.5 hours;

[0051] (2) Preparation of titanium dioxide nanotubes on titanium matrix: the pretreated titanium matrix was fixed on the anode using an anodizing device, the iridium-tantalum electrode was fixed on th...

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Abstract

The invention discloses a manufacture method for a chlorine-evolution DSA electro-catalytic electrode with a three dimensional structure. The method includes a titanium substrate is preprocessed, and a titanium substrate titanium dioxide nanotube is manufactured; an anodic oxidation unit is used to fix the preprocessed titanium substrate on an anode and fix an iridium tantalum electrode on a cathode, the electrolyte temperature is kept in a range from 30 DEG C to 50 DEG C, the anode oxidation time is in a range from 80 minutes to 180 minutes, and the anode oxidation pressure is in a range from 15V to 35V; a hydrothermal reaction is performed; a isopropyl alcohol solution of SnCl4, SbCl3 and RuCl3 is prepared, and the titanium substrate titanium dioxide nanotube is placed in a reaction kettle vertically; the nanotube is reacted for 20h to 50h at a temperature of 100 DEG C to 250 DEG C; and thermal treatment is performed to obtain the electrode. According to the method, tedious painting and thermal decomposition processes are not included, the chlorine-evolution DSA electro-catalytic electrode with the three dimensional structure manufacture without has the advantages of being uniform and compact in surface, high in active component load, high in electrochemical activity, and long in service life.

Description

technical field [0001] The invention relates to a DSA electrode, in particular to a method for preparing a three-dimensional chlorine analyzing DSA electrocatalytic electrode. Background technique [0002] DSA electrode (dimensionally stable anodes) is a new type of anode material developed in the late 1960s and early 1970s. Its structure is based on metal materials with strong corrosion resistance (such as gold, platinum, titanium, stainless steel). It is formed by coating a layer of metal oxide with electrocatalytic activity on its surface. Metal titanium is the most commonly used substrate material for preparing DSA electrodes, so DSA electrodes are also called titanium-based active oxide coated electrodes. Since Beer first published the invention patent of titanium-based ruthenium oxide active coating electrode in 1967, the research on metal oxide anode materials has attracted the attention of electrochemical workers. The chemical composition, structure, preparation me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/02C25B11/06C25D11/26
Inventor 彭峰杨纯曾松峰何思立余皓
Owner SOUTH CHINA UNIV OF TECH
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