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Method for preparing supported palladium catalyst electrode on basis of graphene-doped Nafion film modification

A palladium catalyst and graphene technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as difficult to remove, mutagenic, and toxic, and achieve stability, simple operation, The effect of enhancing the catalytic activity

Inactive Publication Date: 2016-08-31
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, almost all chlorinated organic compounds are toxic, and many of them are considered to have "carcinogenic, teratogenic, and mutagenic" effects, and they remain in the environment for a long time and are difficult to remove. They are a typical type of persistent organic pollution. thing

Method used

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  • Method for preparing supported palladium catalyst electrode on basis of graphene-doped Nafion film modification
  • Method for preparing supported palladium catalyst electrode on basis of graphene-doped Nafion film modification
  • Method for preparing supported palladium catalyst electrode on basis of graphene-doped Nafion film modification

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Experimental program
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Effect test

Embodiment 1

[0024] (1) Put the 2cm×2cm titanium mesh into 0.3mol / L sodium carbonate solution to soak and remove oil, boil in 0.1mol / L oxalic acid solution for 30min to remove surface oxide, and then rinse with double distilled water Clean and dry with nitrogen gas for later use;

[0025] (2) Get graphene to disperse in the isopropanol solution that mass concentration is 0.2% Nafion, graphene mass concentration 0.04%, ultrasonic dispersion 30min, the Graphene-Nafion dispersion liquid that makes uniform dispersion is standby;

[0026] (3) adopt the hydrochloric acid solution 100ml that every 1g palladium chloride corresponds to add 3mol / L and correspondingly add water and dilute to obtain the palladium chloride solution of 4g / L;

[0027] (4) Take 60 μL of the dispersion obtained in step (2), and evenly drop-coat it on the titanium mesh treated in step (1), and place it horizontally to dry naturally to prepare a Graphene-Nafion / Ti electrode. Depend on figure 1 It can be seen that graphene ...

Embodiment 2

[0031] (1) Put the 2cm×2cm titanium mesh into 0.3mol / L sodium carbonate solution to soak and remove oil, boil in 0.1mol / L oxalic acid solution for 30min to remove surface oxide, and then rinse with double distilled water Clean and dry with nitrogen gas for later use;

[0032] (2) Get graphene to disperse in the isopropanol solution that mass concentration is 0.2% Nafion, graphene mass concentration 0.06%, ultrasonic dispersion 30min, the Graphene-Nafion dispersion liquid that makes uniform dispersion is standby;

[0033] (3) adopt the hydrochloric acid solution 100ml that every 1g palladium chloride corresponds to add 3mol / L and correspondingly add water and dilute to obtain the palladium chloride solution of 4g / L;

[0034] (4) Take 60 μL of the dispersion obtained in step (2), and evenly drop-coat it on the titanium mesh treated in step (1), and place it horizontally to dry naturally to prepare a Graphene-Nafion / Ti electrode;

[0035] (5) The Graphene-Nafion / Ti electrode pre...

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Abstract

The invention disclosed a method for preparing supported palladium catalyst electrode on the basis of graphene-doped Nafion film modification and belongs to the technical field of electrochemical water treatment. Graphene is dispersed in a Nafion isopropanol solution in an ultrasonic mode, ultrasonic dispersion is conducted to prepare evenly dispersed Graphene-Nafion dispersion liquid, the dispersion liquid is evenly dropped on a titanium screen and naturally dried, and a Graphene-Nafion / Ti electrode is obtained; the Graphene-Nafion / Ti electrode serves as a negative electrode, a platinum sheet serves as a positive electrode, a palladium chloride (PdCl2) solution serves as electrolyte, and the supported palladium catalyst electrode Pd / Graphene-Nafion / Ti on the basis of graphene-doped Nafion film modification is prepared through electro-deposition. Compared with a Pd / Ti electrode prepared without being modified by graphene, the electrode prepared through the method has higher catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of electrochemical water treatment, and relates to a method for preparing a palladium-supported catalyst electrode based on graphene-doped Nafion membrane modification, which is mainly used for electrochemical reduction dechlorination of chlorinated organic matter in water. Background technique [0002] As a production material and intermediate product, chlorinated organic compounds are widely used in chemical industry, medicine, electronics, leather, etc. and are discharged into the environment. However, almost all chlorinated organic compounds are toxic, and many of them are considered to have "carcinogenic, teratogenic, and mutagenic" effects, and they remain in the environment for a long time and are difficult to remove. They are a typical type of persistent organic pollution. things. Therefore, research on the removal of chlorinated organic matter in water is very necessary. At present, the removal me...

Claims

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Application Information

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IPC IPC(8): C02F1/461C02F101/36
CPCC02F1/46109C02F1/4676C02F2001/46142C02F2101/36
Inventor 孙治荣张进伟
Owner BEIJING UNIV OF TECH
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