Perfluorinated organic compound catalytic degradation agent and preparation method thereof

Abstract

The invention discloses a perfluorinated organic compound catalytic degradation agent and a preparation method thereof. The perfluorinated organic compound catalytic degradation agent is prepared fromdiatomite, a surfactant, ferric chloride, graphite, potassium permanganate, hollow coal ash microspheres and zinc acetate. According to the method, by performing saturation bonding on modified diatomite powder and graphite oxide modified zinc sulfide composite material, pores of diatomite are uniformly filled, so that a composite material is formed, the dispersity of the composite material is obviously improved; graphite oxide with excellent electrical conductivity and super specific surface area is compounded with zinc sulfide, the photocatalytic efficiency is effectively improved, and partof electrons in a perfluorinated organic compound is absorbed to be transferred to valence band holes under light, so that the electrons are degraded. The degradation agent is cheap and available in raw materials, greatly reduces the toxicity of decomposed products during processing of the perfluorinated organic compound, belongs to an effective perfluorinated organic compound processing means, and is suitable for scale popularization and application.

Description

technical field [0001] The invention relates to the technical field of defluorination and environmental protection, in particular to a perfluorinated organic compound catalytic degradation agent and a preparation method thereof. Background technique [0002] With the rapid development of the fluorine industry, perfluorinated organic compounds are widely used in electroplating, dyes, chemicals, light Spinning, food and other fields. At the same time, the discharge of organic fluorine industrial wastewater is also increasing day by day. Since the hydrogen atoms in the perfluorinated organic compound are completely replaced by fluorine, the C-F bond formed has a large bond energy, which makes the perfluorinated organic compound extremely stable. Therefore, the perfluorinated organic compounds contained in wastewater are difficult to be degraded by organisms and can persist in the environment for a long time. Some perfluorinated organic compounds are bioaccumulative and persi...

AI Technical Summary

Problems solved by technology

However, during the photodegradation process of zinc sulfide, the electrons transitioned to the conduction band and the holes left in the valence band are easy to recombine, which reduces the catalytic degradation ability of zinc sulfide, and the recycling catalytic utilization efficiency of powdered zinc sulfide is relatively low.