Modified activated carbon fiber composite material and preparation method thereof, heterogeneous electro-Fenton catalytic composite material and application thereof

Abstract

The invention provides a modified activated carbon fiber composite material, a preparation method of the modified activated carbon fiber composite material, a heterogeneous electro-Fenton catalytic composite material and application of the heterogeneous electro-Fenton catalytic composite material. The preparation method comprises the following steps: pre-treating activated carbon fibers by using an acid solution to obtain pre-acidified activated carbon fibers; the preparation method comprises the following steps: mixing ferrite and silver salt in water to carry out first reaction, then adding pre-acidified activated carbon fibers and alkali to form a reaction system, and carrying out second reaction to obtain the modified activated carbon fiber composite material. The invention also provides the modified activated carbon fiber composite material obtained by the preparation method. The invention further provides a heterogeneous electric-Fenton catalytic composite material comprising the modified activated carbon fiber composite material, and an application of the heterogeneous electric-Fenton catalytic composite material in heterogeneous electric-Fenton catalytic degradation of organic pollutants. The modified activated carbon fiber composite material provided by the invention has relatively high catalytic activity and cycling stability.

Description

technical field [0001] The invention relates to the technical field of heterogeneous electro-Fenton catalytic materials, in particular to a modified activated carbon fiber composite material and a preparation method thereof, a heterogeneous electro-Fenton catalytic composite material and applications thereof. Background technique [0002] Activated carbon fiber (ACF) is regarded as an excellent adsorption material for environmental pollution treatment due to its developed pore structure, huge specific surface area, abundant surface functional groups and relatively high mechanical strength, and has been widely used in harmful substances, The treatment of pollutants in water, etc., but because the adsorption only realizes the process of transferring pollutant molecules to the surface of activated carbon fibers, the activated carbon fibers themselves become harmful substances after adsorption, and fail to destroy the molecular structure of organic matter. Although there are man...

AI Technical Summary

Problems solved by technology

[0002] Activated carbon fiber (ACF) is regarded as environmental pollution due to its developed pore structure, huge specific surface area, rich surface functional groups and relatively high mechanical strength, etc. Excellent adsorption materials in treatment have been widely used in the treatment of harmful substances and pollutants in water, etc., but because the adsorption only realizes the process of transferring pollutant molecules to the surface of activated carbon fibers, the activated carbon fibers themselves become harmful substances after adsorption. , failed to destroy the molecular structure of organic matter

Although there are many modification methods for activated carbon fibers: oxidation, reduction modification, high-temperature heat treatment modification, microwave modification, etc., the disadvantages of its complicated preparation process, high energy consumption and easy to cause secondary pollution greatly limit its wide application.

[0003]Current heterogeneous electro-Fenton solid catalysts contain most of the transition metals are biotoxic, and iron-containing nanoparticles / transition metal-supported granular catalysts in After the reaction, it is difficult to recycle and reuse, and it is easy to cause secondary pollution, which will greatly increase the operating cost

In addition, in the actual water treatment process, nanoparticles are easily lost by water flow and difficult to separate, resulting in secondary pollution

Images