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Method for modifying graphite felt material applied to electro-Fenton system

A graphite felt and Fenton technology, which is applied in the field of modification of electrocatalytic cathode materials, can solve the problems of poor surface hydrophilicity, poor electrochemical activity and low yield of graphite felt materials, and achieves increased reaction active sites, easy Promote the application, the effect of simple operation

Active Publication Date: 2013-01-23
NANKAI UNIV
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Problems solved by technology

However, due to the poor hydrophilicity of the surface of the graphite felt material, the electrochemical activity is not good, and the electrocatalytic production of H 2 o 2 The yield of graphite felt is not high, which restricts its application in the electro-Fenton system. Therefore, it is important to develop a modification method that is simple and can significantly improve the catalytic activity of graphite felt electrodes for its application and promotion in electro-Fenton technology. significance

Method used

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  • Method for modifying graphite felt material applied to electro-Fenton system
  • Method for modifying graphite felt material applied to electro-Fenton system
  • Method for modifying graphite felt material applied to electro-Fenton system

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Embodiment Construction

[0014] The present invention is further described in detail through the following embodiments in conjunction with the accompanying drawings.

[0015] (1) Modification method of graphite felt material

[0016] Soak the cut graphite felt material (5cm×2cm×0.5cm) in an acetone solution for degreasing treatment. The soaking time is 12 hours. After taking it out, it is ultrasonically cleaned several times in deionized water until the residual acetone is removed, and then the material is left to stand Air-dried and used as pretreated graphite felt for later use; immerse the pretreated graphite felt in 100mL of absolute ethanol, heat it in a water bath at a constant temperature of 60°C for 6h, and then place it in a muffle furnace for annealing at 150°C for 2h to obtain the described Modified graphite felt material.

[0017] (2) The electrochemical performance of the product that this embodiment obtains

[0018] The SEM figure of the modified graphite felt material that this embodi...

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Abstract

The invention relates to a surface modification process of a graphite felt material. Graphite felt is heated under reflux in an absolute ethanol environment, thereby implementing the material surface modification under the condition of low annealing temperature and implementing the in-situ loading process of carbon nanoparticles. The method provided by the invention can effectively enhance the specific area of the felt material, increase the surface reactive spots and improve the surface hydrophilicity of the material. When being applied to the electro-Fenton system, the material can effectively enhance the electrocatalytic redox activity of the material, and effectively enhance the capacity for removing organic pollutants in the electro-Fenton system. The method provided by the invention is simple to operate, has low facility request, and thus, has wide application prospects.

Description

technical field [0001] The invention relates to the field of modification of electrocatalytic cathode materials, in particular to a method for modifying graphite felt materials used in electro-Fenton systems. Background technique [0002] The research on Electro-Fenton (EF) technology began in the 1980s. It is a new type of electrochemical advanced oxidation technology for water treatment developed in recent years. It has shown great promise in the treatment of refractory organic pollutants. Good application prospects. The electro-Fenton method is based on molecular oxygen (O 2 ) is reduced to hydrogen peroxide (H 2 o 2 ) and with ferrous ions (Fe 2+ ) reaction to generate strong oxidizing hydroxyl radicals (·OH), thereby realizing the oxidative degradation process of pollutants. Compared with the traditional chemical Fenton method, the electro-Fenton technique can realize the in-situ generation of H at the cathode 2 o 2 , effectively avoiding the problems of safety a...

Claims

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Application Information

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IPC IPC(8): C02F1/46C02F1/72
Inventor 周明华周蕾金涛
Owner NANKAI UNIV
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