期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 424, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.127416
关键词
Zinc oxide; Nanomaterials; Metal oxide; Photocatalysis; Water remediation
This review summarizes recent advances in the fabrication, modification, and industrial application of zinc oxide (ZnO) photocatalysts for wastewater treatment, highlighting the potential for improved efficiency and use of renewable resources in greener photocatalytic technologies.
Industrial wastewaters contain hazardous contaminants that pollute the environment and cause socioeconomic problems, thus demanding the employment of effective remediation procedures such as photocatalysis. Zinc oxide (ZnO) nanomaterials have emerged to be a promising photocatalyst for the removal of pollutants in wastewater owing to their excellent and attractive characteristics. The dynamic tunable features of ZnO allow a wide range of functionalization for enhanced photocatalytic efficiency. The current review summarizes the recent advances in the fabrication, modification, and industrial application of ZnO photocatalyst based on the analysis of the latest studies, including the following aspects: (1) overview on the properties, structures, and features of ZnO, (2) employment of dopants, heterojunction, and immobilization techniques for improved photodegradation performance, (3) applicability of suspended and immobilized photocatalytic systems, (4) application of ZnO hybrids for the removal of various types of hazardous pollutants from different wastewater sources in industries, and (5) potential of bio-inspired ZnO hybrid nanomaterials for photocatalytic applications using renewable and biodegradable resources for greener photocatalytic technologies. In addition, the knowledge gap in this field of work is also highlighted.
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