In-situ-doped iron-based Fenton-like catalyst and synthesis method and application thereof

Abstract

The invention discloses an in-situ iron-based Fenton-like catalyst and a synthesis method and application thereof. The synthesis method comprises the following steps of adding a precursor melamine solution into an iron source solution, and evaporating a mixed solution to dryness to obtain a solid; drying and uniformly grinding the solid, then calcining the solid for 2-5 hours under the condition of 450-650 DEG C, and afterwards, conducting cooling to obtain the catalyst. Iron substances in the catalyst exist in the form of ferric oxides, and are loaded on a carbon nitride framework through Fe-N bonds, the generation of surface defects of the ferric oxides is triggered due to the introduction of carbon nitride, and the electron transfer speed of the catalytic reaction process is increased.In the meanwhile, Fe-g-C3N4 has a certain self-degradation capability on pollutants, a harsh pH condition is not needed anymore in a Fenton-like reaction process, instead, excellent catalytic degradation performance, adaptability and stability can be shown on multiple pollutants simply under neutral conditions, and the catalyst has a great application potential in the aspect of sewage treatment.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an in-situ doped iron-based Fenton-like catalyst and its synthesis method and application. Background technique [0002] Water is one of the indispensable basic substances for the survival of all life on earth, human life and production. In recent years, human life and production activities have led to the production of various new organic pollutants, such as pesticides, phenols, medicines, dyes, insecticides and endocrine disruptors, etc., which have caused great harm to the natural water environment. pollution. Due to the complex composition, refractory, persistence and toxicity of these new organic pollutants, it is difficult to effectively remove them by traditional sewage treatment technologies. For a long time, people have been committed to finding more economical, efficient and stable sewage treatment technology, hoping to find a breakthrough to solve the bottleneck probl...

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Problems solved by technology

[0004] One of the purposes of the present invention is to provide a method for synthesizing an in-situ doped iron-based Fenton-like catalyst, through which an in-situ doped iron-based Fenton-like catalyst is synthesized to solve the problem of heterogeneous Fenton catalysts. Poor activity, poor stability, and low hydrogen peroxide utilization under harsh conditions

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