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Method for preparing dodecyl sodium sulfate doped foam nickel catalysis electrode

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

Inactive Publication Date: 2010-09-01
龙行(天津)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the key technologies of electrochemical reduction dechlorination lies in the electrode. In recent years, it has been reported about the direct deposition of single metals such as Pd / activated carbon fiber (Pd / ACF) electrode, Pd / GC electrode, Pd / Ti electrode, and Pd / Ni electrode. The research on electrodes on substrates has not been widely promoted due to its general catalytic activity, low current efficiency and high energy consumption when dealing with low-concentration chlorinated organics, and the research on highly efficient modified electrodes is still continuing.

Method used

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  • Method for preparing dodecyl sodium sulfate doped foam nickel catalysis electrode
  • Method for preparing dodecyl sodium sulfate doped foam nickel catalysis electrode

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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 prepare 20mmol / l PdCl 2 solution;

[0020] 2) After immersing the nickel foam in sulfuric acid for 1 min to remove surface matter, ultrasonically oscillate in acetone (degreasing) and double-distilled water for 10 min to clean it up, and dry it for later use;

[0021] 3) After mixing pyrrole and 0.5mol / l sulfuric acid in a volume ratio of 7:2493, add sodium dodecylsulfonate, the amount of sodium dodecylsulfonate is 3×10 -4 g / mL mixed solution;

[0022] 4) with step 2) the processed nickel foam is the anode, the platinum sheet is the cathode, and the solution prepared in the step 3) is the electrolyte, and the method of electrodeposition is adopted to obtain pyrrole-sodium dodecylsulfonate / foam Nickel electrode, the deposition current density is 0.56mA / cm 2 , the deposition time is 3min, and the pyrrole-sodium dodecylsulfonate / foam nickel electrode is prepared;

[0023] 5) With the py...

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 foamed nickel in sulfuric acid for 3 minutes to remove surface matter, it was cleaned by ultrasonic vibration in acetone (degreasing) and double distilled water for 15 minutes respectively, and dried for later use;

[0028] 3) After mixing pyrrole and 0.5mol / l sulfuric acid in a volume ratio of 7:2493, add sodium dodecylsulfonate, the amount of sodium dodecylsulfonate is 3×10 -4 g / mL mixed solution;

[0029] 4) with step 2) the processed nickel foam is the anode, the platinum sheet is the cathode, and the solution prepared in the step 3) is the electrolyte, and the method of electrodeposition is adopted to obtain pyrrole-sodium dodecylsulfonate / foam Nickel electrode, the deposition current density is 0.56mA / cm 2 , the deposition time is 3min, and the pyrrole-sodium dodecylsulfonate / foam nickel electrode is prepared;

[0030...

Embodiment 3

[0033] 1) Weigh PdCl 2 Dissolve the powder in 3mol / L HCl solution, add deionized water to prepare 23mmol / L PdCl 2 solution;

[0034] 2) After immersing the nickel foam in 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;

[0035] 3) After mixing pyrrole and 0.5mol / l sulfuric acid in a volume ratio of 7:2493, add sodium dodecylsulfonate, the amount of sodium dodecylsulfonate is 3×10 -4 g / mL mixed solution;

[0036] 4) with step 2) the processed nickel foam is the anode, the platinum sheet is the cathode, and the solution prepared in the step 3) is the electrolyte, and the method of electrodeposition is adopted to obtain pyrrole-sodium dodecylsulfonate / foam Nickel electrode, the deposition current density is 0.56mA / cm 2 , the deposition time is 3min, and the pyrrole-sodium dodecylsulfonate / foam nickel electrode is prepared;

[0037] 5) With ...

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Abstract

The invention relates to a preparation method of a nickel foam catalytic electrode doped with sodium dodecyl sulphonate and belongs to the field of electrochemical water treatment. The existing electrochemical reduction dechlorination electrode has the problems of no high catalytic activity, etc. The invention prepares a PPy(SLS) / nickel foam electrode by electro-deposition by adopting the nickel foam as the anode and platinum sheet as the cathode and adding the mixed solution of sulfate and pyrrole added with the sodium dodecyl sulphonate with the current density of 0.56mA / cm<2> and the time of 3 minutes; the nickel foam catalytic electrode doped with the sodium dodecyl sulphonate is then prepared by the electro-deposition by adopting the PPy(SLS) / nickel foam as the cathode, the platinum sheet as the anode, the PdCl2 solution as the electrolyte with the current density of 0.56 to 1.24 mA / cm<2> and the time of 20 to 45 minutes. The catalytic activity of the electrode prepared by the invention is obviously improved and the electrode has the advantage of low cost and a plurality of application prospects.

Description

technical field [0001] The invention belongs to the field of electrochemical water treatment, and specifically relates to a method for preparing a catalyst electrode doped with sodium dodecylsulfonate (SLS) with nickel foam as the matrix, which is mainly used for electrochemical reduction and removal. Chlorinated organics in water. Background technique [0002] Among the many organic compounds synthesized by industry, chlorinated compounds are produced and used in large quantities because of their important commercial value, mainly as solvents, pesticides and various oils. As a large number of chlorinated organic compounds enter the environment through various channels, people gradually realize that these compounds are harmful to the ecological environment and human health. Many chlorinated organic compounds are considered to have "carcinogenic, teratogenic, and mutagenic" effects. Therefore, it is necessary to study the removal methods of chlorinated organic compounds in w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/06C02F1/46
Inventor 孙治荣葛慧胡翔
Owner 龙行(天津)科技有限公司
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