Progress in the Preparation and Modification of Zinc Ferrites Used for the Photocatalytic Degradation of Organic Pollutants

Jinyuan Zhu, Yingying Zhu (), Zhen Chen, Sijia Wu, Xiaojian Fang and Yan Yao ()
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Jinyuan Zhu: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Yingying Zhu: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Zhen Chen: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Sijia Wu: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Xiaojian Fang: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China
Yan Yao: College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China

IJERPH, 2022, vol. 19, issue 17, 1-32

Abstract: Zinc ferrite is a type of photocatalytic material with high physicochemical stability, narrow band gap, high carrier separation efficiency, high porosity, and paramagnetism, which makes it easy to recover. Thus, zinc ferrite is widely used as a photocatalyst in water treatment. In this paper, the preparation principles as well as the advantages and disadvantages of typical methods used to prepare zinc ferrite including hydrothermal, co-precipitation, sol-gel, and other novel methods such as biosynthesis have been summarized. Modification methods such as elemental doping, composite formation, and morphological modification have been highlighted. Using these modification methods, the catalytic activity of zinc ferrite toward the photocatalytic degradation of organic pollutants in water has been enhanced. Biosynthesis is regarded as a promising preparation method that uses biological materials instead of chemical materials to achieve the large-scale preparation of zinc ferrite using low cost, energy efficient, and environmentally friendly processes. Meanwhile, the combination of multiple modification techniques to enhance the photocatalytic performance of zinc ferrite will be an important research trend in the future.

Keywords: zinc ferrite; catalyst; photochemistry; nanomaterials; wastewater (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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