标题：Progress on the Photocatalytic Reduction Removal of Chromium Contamination
作者：Zhao, Zengying; An, He; Lin, Jing; Feng, Mingchao; Murugadoss, Vignesh; Ding, Tao; Liu, Hu; Shao, Qian; Mai, Xianmin; Wang, Ning; 更多 作者机构：[Zhao, Zengying; An, He; Feng, Mingchao] China Univ Geosci, Sch Sci, Beijing 100083, Peoples R China.; [Lin, Jing] Guangzhou Univ, Sch Chem & Chem E 更多
通讯作者：Lin, J;Guo, ZH;Angaiah, S;Ding, T;Mai, XM
通讯作者地址：[Lin, J]Guangzhou Univ, Sch Chem & Chem Engn, Guangzhou 510006, Guangdong, Peoples R China;[Guo, ZH]Univ Tennessee, Chem & Biomol Engn Dept, Knoxville 更多
关键词：Chromium removal; Photocatalytic reduction; Photoelectrocatalytic; reduction
摘要：Rapid industrialization leads to increased wastewater discharge encompassing hexavalent chromium (Cr(VI)), which leads to serious environmental problems of toxicity and potential carcinogenicity. Removal of these species is normally carried out by ion-exchange, precipitation, membrane filtration, sorption, photocatalytic reduction, etc. This review mainly focuses on the photocatalytic and photoelectrocatalytic (PEC) reduction of Cr (VI), because of their advantages over other methods such as reduced risk of secondary pollution by non-reduced Cr (VI), no sludge formation, no need for a large amount of chemical reagents, clean and easy installation. The main factors influencing the photocatalytic reduction efficiency of Cr (VI) such as catalyst activity, solution pH, Cr adsorption on the catalyst and additives, are briefly discussed. Finally, a special emphasis is provided to the photoelectrocatalytic (PEC) reduction of Cr (VI).