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Method for preparing sodium dodecyl benzene sulfonate doped titanium catalyzed electrode

A technology of sodium dodecylbenzenesulfonate and catalytic electrodes, which is applied in chemical instruments and methods, electrodes, electrolytic processes, etc., can solve the problems of low current efficiency, high energy consumption, and limitations, and achieve improved catalytic performance and increased The specific surface area and the effect of improving the adsorption capacity

Inactive Publication Date: 2012-07-25
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the Pd / activated carbon fiber (Pd / ACF) electrode, Pd / GC electrode, Pd / Ti electrode, Pd / Ni electrode, etc. that have been reported in recent years are electrodes that directly deposit metal on the substrate, and their catalytic activity is general. Low current efficiency and high energy consumption when dealing with low-concentration chlorinated organic compounds, which cannot be widely promoted
In addition, some widely used electrode base materials have problems such as high resistance and unstable performance, which limit their application in electrochemical applications.

Method used

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  • Method for preparing sodium dodecyl benzene sulfonate doped titanium catalyzed electrode
  • Method for preparing sodium dodecyl benzene sulfonate doped titanium catalyzed electrode
  • Method for preparing sodium dodecyl benzene sulfonate doped titanium catalyzed electrode

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Experimental program
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Effect test

Embodiment 1

[0020] 1) Weigh PdCl 2 Dissolve the powder in 3mol / L HCl solution, add deionized water to prepare 22.5mmol / L PdCl 2 solution;

[0021] 2) After immersing the titanium in 0.5mol / L sulfuric acid for 3 minutes to remove the surface matter, it was cleaned by ultrasonic vibration in acetone (degreasing) and double-distilled water for 15 minutes respectively, and dried for later use;

[0022] 3) After pyrrole and the sulfuric acid of 0.3mol / L are mixed by volume ratio 7: 1000, add sodium dodecylbenzenesulfonate to obtain mixed solution, the content of sodium dodecylbenzenesulfonate in the mixed solution is 0.00075g / mL;

[0023] 4) With the titanium treated in step 2) as the anode, the platinum sheet as the cathode, and the solution prepared in step 3) as the electrolyte, the PPy-SDBS / Ti electrode was prepared by electrodeposition, and the deposition current density was 0.625 mA / cm 2 , the deposition time is 5min;

[0024] 5) With the PPy-SDBS / Ti electrode as the cathode, the p...

Embodiment 2

[0027] 1) Weigh PdCl 2 Dissolve the powder in 3mol / L HCl solution, add deionized water to prepare 23mmol / L PdCl 2 solution;

[0028] 2) After immersing the titanium in 0.5mol / L sulfuric acid for 2 minutes to remove surface matter, it was cleaned by ultrasonic vibration in acetone (degreasing) and double distilled water for 12 minutes respectively, and dried for later use;

[0029] 3) After pyrrole and the sulfuric acid of 0.3mol / L are mixed by volume ratio 7: 1000, add sodium dodecylbenzenesulfonate to obtain mixed solution, the content of sodium dodecylbenzenesulfonate in the mixed solution is 0.001g / mL;

[0030] 4) With the titanium treated in step 2) as the anode, the platinum sheet as the cathode, and the solution prepared in step 3) as the electrolyte, the PPy-SDBS / Ti electrode was prepared by electrodeposition, and the deposition current density was 0.625 mA / cm 2 , the deposition time is 5min;

[0031] 5) With the PPy-SDBS / Ti electrode as the cathode, the platinum ...

Embodiment 3

[0034] 1) Weigh PdCl 2 Dissolve the powder in 3mol / L HCl solution, add deionized water to prepare 24.5mmol / L PdCl 2 solution;

[0035] 2) After immersing the titanium in 0.5mol / L sulfuric acid for 2 minutes to remove surface matter, it was cleaned by ultrasonic vibration in acetone (degreasing) and double distilled water for 10 minutes respectively, and dried for later use;

[0036] 3) After pyrrole and the sulfuric acid of 0.3mol / L are mixed by volume ratio 7: 1000, add sodium dodecylbenzenesulfonate to obtain mixed solution, the content of sodium dodecylbenzenesulfonate in the mixed solution is 0.0015g / mL;

[0037] 4) With the titanium treated in step 2) as the anode, the platinum sheet as the cathode, and the solution prepared in step 3) as the electrolyte, the PPy-SDBS / Ti electrode was prepared by electrodeposition, and the deposition current density was 0.625 mA / cm 2 , the deposition time is 5min;

[0038]5) With the PPy-SDBS / Ti electrode as the cathode, the platinu...

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Abstract

The invention discloses a method for preparing a sodium dodecyl benzene sulfonate doped titanium catalyzed electrode, belonging to the field of electrochemical water treatment. In the method, a PPy-SDBS / Ti electrode is prepared by electro-deposition by using titanium as an anode, a platinum sheet as a cathode, and pyrrole and sulfuric acid mixed solution added with sodium dodecyl benzene sulfonate as electrolyte, wherein the deposit current density is 0.625mA / cm<2>, and the deposit time is 5 minutes; and the sodium dodecyl benzene sulfonate doped titanium catalyzed electrode is prepared by electro-deposition by using the PPy-SDBS / Ti as a cathode, a platinum sheet as an anode, and PdCl2 solution as electrolyte, wherein the deposit current density is between 2.500 and 5.000mA / cm<2>, and thedeposit time is between 25 and 35 minutes. The prepared electrode has obviously improved catalysis activity and low cost, and has certain application prospect.

Description

technical field [0001] The invention relates to a preparation method of a titanium electrode, in particular to a preparation method of a catalytic electrode doped with sodium dodecylbenzenesulfonate (SDBS) with titanium as the matrix, which is mainly used for electrochemical reduction Remove chlorinated organics from water. Background technique [0002] The wide application of chlorinated organic compounds in many industries such as chemical industry, medicine, tanning, electronics, pesticides, etc. has led to the discharge of a large number of chlorinated compounds and their intermediate products in the synthesis process into the environment. Almost all chlorinated organic compounds are toxic, and many of them are considered carcinogenic, teratogenic, and mutagenic; at the same time, many chlorinated organic compounds are easily absorbed by the skin and mucous membranes due to their high volatility and lipid solubility and cause serious damage to the human body. Therefore...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/06C02F1/461C02F1/58C02F101/36
Inventor 孙治荣马林胡翔彭永臻
Owner BEIJING UNIV OF TECH
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