Monatomic catalytic material for removing refractory organic pollutants and preparation method of monatomic catalytic material

Abstract

The invention provides a monatomic catalytic material for removing refractory organic pollutants and a preparation method of the monatomic catalytic material, and belongs to the field of environmental pollution treatment. The preparation method comprises the following steps: grinding and mixing a certain mass of hexachlorocyclohexane octahydrate and urea, and heating at low temperature to form a eutectic mixture; cooling the eutectic mixture to room temperature, performing grinding and mixing with a certain mass of chlorate, and performing heating to obtain an N-rich carbon carrier; mixing the dissolved iron salt with the N-rich carbon carrier to obtain a suspension, and further uniformly dispersing Fe atoms on the N-rich carbon carrier by adopting a traditional H2 reduction method. Fe species in the catalytic material exist in a monatomic form, and monatomic Fe is loaded on the surface of a carrier through metal-carrier interaction. The material has excellent organic pollutant degradation capability and good reusability in a larger pH range. The material is low in preparation cost, simple in preparation method, low in energy consumption and easy for large-scale preparation, and has a good application prospect in the field of pollution control.

Description

technical field

[0001] The invention relates to the field of environmental pollution control, in particular to a single-atom catalytic material for removing refractory organic pollutants and a preparation method thereof. Background technique

[0002] Most of the wastewater generated from pesticide, printing and dyeing, chemical, pharmaceutical and landfill sites is refractory organic wastewater, which usually contains high concentrations of organic pollutants that are biologically toxic and highly stable. Biochemical treatment technology is currently the dominant process because of its good economy and thorough removal of pollutants. However, the effluent after biochemical treatment still contains a large amount of refractory organic matter. Therefore, it is necessary to further adopt advanced treatment technology for tail water to meet the discharge requirements of industry standards. Traditional tail water advanced treatment technologies include adsorption method, coagula...

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