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Preparation method of titanium catalytic electrode doped with hexadecyl trimethyl ammonium bromide

A technology of cetyltrimethylammonium bromide and catalytic electrodes, which is applied in electrodes, electrolytic processes, electrolytic components, etc., can solve the problems of high energy consumption, low current efficiency, general catalytic activity, etc., and increase the specific surface area , improve the adsorption capacity, improve the effect of catalytic performance

Inactive Publication Date: 2011-06-15
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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  • Preparation method of titanium catalytic electrode doped with hexadecyl trimethyl ammonium bromide
  • Preparation method of titanium catalytic electrode doped with hexadecyl trimethyl ammonium bromide
  • Preparation method of titanium catalytic electrode doped with hexadecyl trimethyl ammonium bromide

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Experimental program
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Effect test

Embodiment 1

[0019] 1) Weigh PdCl 2 Dissolve the powder in 3mol / L HCl solution, add deionized water to make 22.5mmol / L PdCl 2 solution;

[0020] 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;

[0021] 3) After pyrrole and 0.3mol / L sulfuric acid are mixed in a volume ratio of 7:1000, cetyltrimethylammonium bromide is added to obtain a mixed solution, and the content of cetyltrimethylammonium bromide in the mixed solution 0.0002g / mL;

[0022] 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-CTAB / Ti electrode was prepared by electrodeposition, and the deposition current density was 0.625 mA / cm 2 , the deposition time is 5min;

[0023] 5) With the PPy-CTAB / Ti electrode as the cathode, the p...

Embodiment 2

[0026] 1) Weigh PdCl 2 Dissolve the powder in 3mol / L HCl solution, add deionized water to make 22.5mmol / L PdCl 2 solution;

[0027] 2) After immersing 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, and dried for later use;

[0028] 3) After pyrrole and 0.3mol / L sulfuric acid are mixed in a volume ratio of 7:1000, cetyltrimethylammonium bromide is added to obtain a mixed solution, and the content of cetyltrimethylammonium bromide in the mixed solution 0.0003g / mL;

[0029] 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-CTAB / Ti electrode was prepared by electrodeposition, and the deposition current density was 0.625 mA / cm 2 , the deposition time is 5min, and the PPy-CTAB / Ti electrode is prepared;

[0030] 5) With the PPy-CTAB / Ti electrode...

Embodiment 3

[0033] 1) Weigh PdCl 2 Dissolve the powder in 3mol / L HCl solution, add deionized water to prepare 24.5mmol / L PdCl 2 solution;

[0034] 2) After immersing the titanium in 0.5mol / L sulfuric acid for 2 minutes to remove the surface matter, it was cleaned by ultrasonic vibration in acetone (degreasing) and double distilled water for 10 minutes respectively, and dried for later use;

[0035] 3) After pyrrole and 0.3mol / L sulfuric acid are mixed in a volume ratio of 7:1000, cetyltrimethylammonium bromide is added to obtain a mixed solution, and the content of cetyltrimethylammonium bromide in the mixed solution 0.0004g / mL;

[0036] 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-CTAB / Ti electrode was prepared by electrodeposition, and the deposition current density was 0.625 mA / cm 2 , the deposition time is 5min;

[0037] 5) With the PPy-CTAB / Ti electrode as the cathode, the ...

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Abstract

The invention discloses a preparation method of titanium catalytic electrode doped with hexadecyl trimethyl ammonium bromide, belonging to the field of electrochemistry water treatment. In the invention, titanium is taken as positive electrode, a platinum plate as negative electrode, and mixed solution of sulfuric acid and pyrrole doped with hexadecyl trimethyl ammonium bromide as electrolyte to carry out electrolytic deposition to prepare PPy-CTAB / Ti electrode with current density being 0.625mA / cm2 and time being 5min; then PPy-CTAB / Ti is taken as negative electrode, the platinum plate as positive electrode, and PdC12 solution as electrolyte to carry out electrolytic deposition to prepare titanium catalytic electrode doped with hexadecyl trimethyl ammonium bromide with current density being 3.125-5.000 mA / cm2 and time being 25-35min. The catalytic activity of the electrode prepared in the invention is obviously improved, and the cost is low, thus the invention has certain applicationprospect.

Description

technical field [0001] The invention relates to a preparation method of a titanium electrode, in particular to a preparation method of a titanium-based cetyltrimethylammonium bromide (CTAB)-doped catalytic electrode, which is mainly used in electric Chemical reduction removes chlorinated organic compounds in 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. Among the 129 envi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/06C02F1/46
Inventor 孙治荣马林胡翔彭永臻
Owner BEIJING UNIV OF TECH
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