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Titanium-based tin-antimony-platinum oxide electrode material and preparation method thereof

A titanium-based tin-antimony-platinum and electrode material technology, which is applied in the directions of oxidized water/sewage treatment, electrochemical water/sewage treatment, etc. Effects of high electrocatalytic activity and electrochemical stability, reduced operating costs, and increased compactness

Inactive Publication Date: 2012-01-18
DALIAN MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrode material is one of the key factors affecting the treatment effect of the electrocatalytic method. Ti / Sn-Sb oxide electrode is a kind of electrode with high oxygen evolution potential, excellent catalytic performance and good conductivity. It is one of the current electrocatalytic oxidation water treatment methods. A commonly used electrode, suitable for the treatment of organic industrial wastewater; but its SO 4 2- Generate S 2 o 8 2- The reaction of the treated wastewater has no catalytic effect, and the biodegradability of the treated wastewater is poor, so it is not suitable for advanced treatment by biochemical methods, and conventional methods such as ordinary filtration and flocculation are basically ineffective.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation method of titanium-based tin antimony platinum oxide electrode material:

[0019] ① Substrate treatment

[0020] The titanium plate was ultrasonically cleaned with acetone, etched in HF aqueous solution with a volume fraction of 10% for 5 minutes, ultrasonically cleaned with deionized water for 20 minutes, and dried with nitrogen; polished with 240 mesh metallographic sandpaper, cleaned again with deionized water for 20 minutes, nitrogen blow dry.

[0021] ②The middle layer is tin-plated

[0022] Put the titanium plate treated in step ① into the tin plating solution, the tin plate is used as the anode, and the current density is 5A cm -2 , the electroplating time is 60min, and a tin coating is formed on the titanium plate;

[0023] Coat the tin-plated titanium plate with water, dry it in an oven at 90°C, repeat 3 times, and the Sn on the surface of the titanium plate will be converted into SnO 2 .

[0024] Tin bath composition: tin sulfate 55g L -1...

Embodiment 2

[0030] ① Substrate treatment

[0031] The titanium plate was ultrasonically cleaned with acetone, etched in HF aqueous solution with a volume fraction of 10% for 5 minutes, ultrasonically cleaned with deionized water for 20 minutes, dried with nitrogen, polished with 240 mesh metallographic sandpaper, and then ultrasonically cleaned with deionized water for 10 minutes. Blow dry with nitrogen.

[0032] ②The middle layer is tin-plated

[0033] Put the titanium plate treated in step ① into the tin plating solution, the tin plate is used as the anode, and the current density is 5A cm -2 , the electroplating time is 60min, and a tin coating is formed on the titanium plate;

[0034] Tin bath composition: tin sulfate 55g L -1 , sulfuric acid 100g·L -1 , gelatin 2g·L -1 , β-naphthol 1g·L -1 .

[0035] Coat the electroplated titanium plate with water, put it in an oven at 90°C for drying, then apply water and dry it, repeat this process 3 times, and the Sn on the titanium surfac...

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Abstract

The invention relates to a titanium-based tin-antimony-platinum oxide electrode material and a preparation method thereof. The preparation method comprises the steps of pretreating a titanium matrix, plating tin, coating an active layer and sintering, wherein the active layer is antimony-platinum coating liquid; and the constitution of the antimony-platinum coating liquid is characterized in thatSbCl3:H2PtCl6.6H2O:36wt% HCl:n-butyl alcohol=0.1g:(0.01-0.03g):1ml:5ml. A titanium-based tin-antimony-platinum oxide electrode provided by the invention has high oxygen evolution potential and is suitable for the treatment of organic waste water which is difficult to degrade; meanwhile, the electrode can be used for better catalyzing the reaction for generating apersulfate radical (S2O8<2->) froma sulfate radical (SO4<2->); and under the condition of same power consumption and same electrolyte, the output of S2O8<2-> is 30-35% higher than that of the titanium-based tin-antimony (Ti / Sn-Sb) oxide electrode.

Description

technical field [0001] The invention relates to an electrocatalytic oxidation electrode (DSA) material, in particular to a titanium electrode material whose surface is covered with a tin-antimony-platinum coating and a preparation method thereof. Background technique [0002] Electrocatalytic oxidation is an effective method for treating refractory organic matter in water leaves. It has attracted much attention because of its simplicity, rapidity, and the ability to produce electrosorption and electrocoagulation. The electrode material is one of the key factors affecting the treatment effect of the electrocatalytic method. Ti / Sn-Sb oxide electrode is a kind of electrode with high oxygen evolution potential, excellent catalytic performance and good conductivity. It is one of the current electrocatalytic oxidation water treatment methods. A commonly used electrode, suitable for the treatment of organic industrial wastewater; but its SO 4 2- Generate S 2 o 8 2- The reactio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/46C02F1/72
Inventor 张乃东栾万利朱正江
Owner DALIAN MARITIME UNIVERSITY
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