Recent advances in wastewater treatment using semiconductor photocatalysts
Recent advances in wastewater treatment using semiconductor photocatalysts
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DOI：
10.1016/j.cogsc.2022.100644
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发表时间：
2022-07-15
影响因子：
9.3
通讯作者：
Su, Xiao
中科院分区：
文献类型：
--
作者：
Hong, Jaeyoung;Cho, Ki-Hyun;Su, Xiao
半导体材料由于其光催化性能，可以通过设计带隙结构来控制，因此在废水处理方面具有广阔的潜力。半导体材料中的光生电子和空穴直接或间接地通过生成反应物质，为污染物的降解提供了有效的氧化/还原性能。光催化降解已被用于处理从染料、化学前体、药物到各种有机和无机废物的污染物。在过去的几年里，功能材料的进步通过掺杂杂原子或形成异质结实现了更宽的光吸收范围和延长载流子寿命。尽管取得了这些进展，但仍需要创新的策略来针对具有环境持久性的新污染物，如全氟化合物，并在存在多组分干扰离子的情况下提高这些纳米材料在真实水基质中的效率。本文综述了近年来半导体催化剂在废水处理和环境修复中的应用进展，并讨论了克服目前限制的新方法。
Semiconductor materials demonstrate promising potential for wastewater treatment due to their photocatalytic properties, which can be controlled through the design of the bandgap structure. The photogenerated electron and hole in semiconductor materials provide efficient oxidation/reduction performance for the degradation of pollutants, either directly or indirectly, through the generation of reactive species. Photocatalytic degradation has been utilized to treat contaminants ranging from dyes, chemical precursors, and pharmaceuticals, to diverse organic and inorganic waste. Over the past few years, advances in functional materials have achieved wider light absorption ranges and extended charge carrier lifetime through the doping of heteroatoms or the formation of heterojunctions. Despite these advances, innovative strategies are required to target emerging contaminants with environmental persistence, such as perfluorinated compounds, and improve the efficiency of these nanomaterials in real water matrices in the presence of multicomponent interfering ions. In this review, recent advances on the application of semiconductor catalysts for wastewater treatment and environmental remediation are reviewed, and new approaches that may overcome the current limitations are discussed.