Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China.
College of Metrology & Measurement Engineering, China Jiliang University, Hangzhou 310018, China.
Int J Environ Res Public Health. 2022 Aug 28;19(17):10710. doi: 10.3390/ijerph191710710.
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.
锌铁氧体是一种光催化材料，具有物理化学稳定性高、带隙窄、载流子分离效率高、孔隙率高、顺磁性等优点，易于回收。因此，锌铁氧体被广泛用作水处理中的光催化剂。本文综述了水热法、共沉淀法、溶胶-凝胶法等典型方法以及生物合成等新型方法制备锌铁氧体的原理，以及它们各自的优缺点。重点介绍了元素掺杂、复合形成和形态改性等改性方法。通过这些改性方法，可以提高锌铁氧体对水中有机污染物的光催化降解活性。生物合成被认为是一种很有前途的制备方法，它使用生物材料代替化学材料，以低成本、节能和环保的工艺实现锌铁氧体的大规模制备。同时，多种改性技术的结合将是提高锌铁氧体光催化性能的一个重要研究趋势。
