水中微塑料光催化处理的进展

Advances in photocatalytic treatment of microplastics in water

摘要:

近年来，微塑料（MPs）作为新型污染物引发的环境问题受到了广泛关注，水体环境作为微塑料的主要汇集地其治理工作已成为热点研究领域。微塑料具有稳定、易迁移、吸附其它污染物引发复合毒性等特性，传统的水处理技术不能高效、彻底地将其去除。光催化技术在实验室规模上可将MPs转化为水溶性碳氢化合物和CO2，在彻底降解MPs方面表现出了巨大的潜力。本文综述了光催化技术去除MPs的催化剂和催化机理及影响降解效果的主要因素，为去除水环境中MPs的研究提供可靠依据，并且针对复杂水环境中MPs光催化降解和催化剂的发展进行了展望。

Abstract:

In recent years, the environmental problems caused by microplastics (MPs) as new pollutants have received widespread attention. And the aqueous environment, which is the main pool of microplastics, has become a hot research area for its management. Due to their stability, ease of migration, and toxic effects caused by adsorption of other pollutants, etc., conventional water treatment technologies are not able to remove them efficiently and completely. However, photocatalysis can convert MPs to water-soluble hydrocarbons and CO2 at laboratory scale, showing great potential for complete degradation of MPs. This paper reviews the mechanism of MPs removal by photocatalysis and the main factors affecting catalysis to provide a reliable basis for the study of MPs removal in the aqueous environment. At the same time, it prospects the development trend of photocatalytic degradation of MPs and catalysts in complex aqueous environment.