Carbon cloth electrode surface electrochemical oxidation method and heavy metal adsorption method

Abstract

The invention discloses a carbon cloth electrode surface electrochemical oxidation method and a heavy metal adsorption method, which relates to a carbon cloth electrode surface chemical oxidation method and a heavy metal adsorption method. The invention aims to solve the technical problems that active sites on the surface of the existing carbon cloth electrode are limited, and the conductivity ofthe electrode is damaged by increasing the active sites. An electrochemical oxidation method is adopted; an electrolyte solution is a sulfuric acid solution, carbon cloth is used as a working electrode to oxidize the carbon cloth; the oxidation degree controllability is high, the conductive structure of the carbon cloth can be kept, the surface of the oxidized carbon cloth contains a large numberof oxygen-containing functional groups such as hydroxyl and carboxyl, the surface activity of the carbon cloth is improved, a large number of active sites are increased, the hydrophilicity of the oxidation-state carbon cloth electrode is improved, and then the adsorption and electrochemical treatment capacity of the carbon cloth electrode on heavy metal is improved. The carbon cloth electrode withthe electrochemically oxidized surface can be used as a working electrode to adsorb heavy metals by adopting an electrochemical method. The method is applied to heavy metal adsorption.

Description

technical field [0001] The invention relates to a method for chemically oxidizing the surface of a carbon cloth electrode and a method for adsorbing heavy metals. Background technique [0002] Carbon cloth Carbon Cloth, the abbreviation of carbon fiber cloth. It is made of pre-oxidized polyacrylonitrile fiber fabric by carbonization or carbon fiber by weaving. Due to the smooth surface of carbon cloth, small specific surface area, and chemical inertness, it is not efficient to directly treat heavy metal ions in water as an electrode. It is necessary to pretreat carbon cloth in a suitable way to increase the specific surface area of ​​carbon cloth and increase its surface. The type and number of functional groups. Currently commonly used methods include chemical oxidation, liquid phase oxidation, gas phase oxidation and so on. [0003] Heavy metal pollution refers to the phenomenon of environmental pollution caused by heavy metals or their compounds due to the discharge of...

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Problems solved by technology

[0005] The present invention aims to solve the technical problem that the active sites on the surface of the existing carbon cloth electrode are limited, and increasing the active site will destroy the conductivity of the electrode, and provides a method for electrochemical oxidation of the surface of the carbon cloth electrode and the ability to adsorb heavy metals method

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