Fe (III) cluster/bismuth oxyiodate composite photocatalytic material and preparation method and application thereof

Abstract

The invention discloses a Fe (III) cluster / bismuth oxyiodide composite photocatalytic material and a preparation method and application thereof. The photocatalytic material comprises defective bismuthoxyiodide and Fe (III) clusters loaded thereon. The preparation method comprises the following steps: preparing a bismuth oxyiodide monomer; preparing defective bismuth oxyiodide through calcination;and preparing the photocatalytic material through water bath reaction. The photocatalytic material has the advantages of wide photoresponse range, low photo-generated electron and hole recombinationefficiency, high catalytic performance, good stability, good reusability, simplicity in recycling, high recycling rate and the like, can be widely used for treating pollutants in the environment, andhas high use value and good application prospect. The preparation method has the advantages of being simple in process, convenient to operate, low in raw material cost, less in energy consumption, short in time consumption, mild in reaction condition, easy to control, environment-friendly and the like, and the prepared material is high in crystallization degree, unchanged in property and good in application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials, and relates to an Fe(III) cluster / bismuth oxyiodate composite photocatalytic material and a preparation method and application thereof. Background technique [0002] With the rapid expansion of social economy and human activities, environmental damage caused by improper discharge of refractory organic pollutants has had adverse effects on human bodies and ecosystems. Antibiotics are one of the most important pharmaceutical precursors, widely used in medicine, animal husbandry, agriculture and other fields. However, the misuse of antibiotics has led to the emergence of a large number of antibiotics in the environment, which in turn has led to the emergence of antibiotic-resistant bacteria and resistance genes, which are harmful to humans and cause a large number of diseases and deaths every year. Therefore, it is an unremitting pursuit of today's society to develop a method...

AI Technical Summary

Problems solved by technology

However, how to effectively introduce defects into the lattice of bismuth oxyiodate is still a difficult problem to be solved urgently

In addition, by introducing a co-catalyst, the problem of high recombination rate of photogenerated electrons and holes in bismuth oxyiodate can be solved. It can be seen that loading Fe(Ⅲ) clusters as a co-catalyst on bismuth oxyiodate should also solve the above problems. There is a problem of high photogenerated electron-hole recombination rate in bismuth oxyiodate, but the following problems still exist in the actual preparation process of Fe(Ⅲ) cluster / bismuth oxyiodate composite photocatalytic materials: (1) how to The co-catalyst Fe(Ⅲ) clusters were successfully supported on the surface of defective bismuth oxyiodate; The performance of catalytic materials has an important impact, for example, excessive Fe(Ⅲ) clusters will inhibit the catalytic effect, so it is necessary to explore the appropriate loading of Fe(Ⅲ) clusters; (3) Fe(Ⅲ) clusters will appear iron The leaching of ions, thus affecting the stability of the composite photocatalyst

Therefore, how to overcome the problems in the above-mentioned prior art to obtain a Fe(Ⅲ) cluster / iodic acid oxygen compound with wide photoresponse range, low recombination efficiency of photogenerated electrons and holes, strong catalytic performance and good reusability Bismuth composite photocatalytic materials and matching reaction conditions are mild, easy to operate, green and environmentally friendly, and can be used for large-scale preparation of Fe(Ⅲ) clusters / bismuth oxyiodate composite photocatalytic materials. The scope of application and the effective removal of pollutants (such as antibiotics) in the environment have very important practical significance

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