文献类型：期刊文献

英文题名：Enhanced removal of bisphenol A by cyclodextrin in photocatalytic systems: Degradation intermediates and toxicity evaluation

作者：Zhou, Yi[1,2];He, Jie[1];Lu, Jian[1];Liu, Yongdi[1];Zhou, Yanbo[1,2]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China

年份：2020

卷号：31

期号：10

起止页码：2623

外文期刊名：CHINESE CHEMICAL LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000591448200012)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 51778230, 21906056), Shanghai Rising-Star Program (No. 17QA1401000), China Postdoctoral Science Foundation (No. 2018M641943), Shanghai Sailing Program (No. 19YF1411900) and the Fundamental Research Funds for the Central Universities (No. 222201718003).

语种：英文

外文关键词：Cyclodextrin; Bisphenol A; Photocatalysis; Toxicity; Carbon nitride

摘要：At present, the assessment of photooxidation system mainly focuses on the photodegradation efficiency of target pollutant, lacking of the toxicity assessment in the photocatalysis process. Here, photodecomposition of bisphenol A (BPA) was used to investigate the performance of several cyclodextrin modified photocatalysts. Moreover, the comprehensive toxicity changes of BPA under different photocatalytic oxidation conditions were conducted. The beta-cyclodextrin (beta-CD) modified photocatalyst, including titanium dioxide (CM-beta-CD-TiO2), carbon nitride (CM-beta-CD-C3N4) and cadmium sulfide (SH-beta-CD-AM/CdS) exhibit high degradation rate and mineralization efficiency of BPA. The highest total organic carbon (TOC) removal of BPA observed in the oxidation system of SH-beta-CD-AM/CdS nanoreactor (73.4%). The main oxidation intermediates in these systems were detected, and the comprehension toxicity of BPA and its oxidation intermediates in different system were compared by toxicity estimation software tool (T.E.S.T.) based on quantitative structure-activity relationship (QSAR) prediction. The results show that beta-CD can facilitate the photodecomposition of the target contaminant. However, many oxidation intermediates with high comprehensive toxicity, even in the oxidation system with high BPA removal, can still be detected. Therefore, not only decomposition of target contaminant but also the comprehensive toxicity of oxidation intermediates should be regarded as index to evaluate a photocatalysis technology. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.