文献类型：期刊文献

英文题名：Efficient Oxidation of Paracetamol Triggered by Molecular-Oxygen Activation at β-Cyclodextrin-Modified Titanate Nanotubes

作者：Zhou, Yi[1,2,3];Liu, Qiming[1];Li, Xia[1];Ling, Liangxiong[1];Zhou, Yanbo[1,2,3,4]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Reso, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shanghai Inst Pollut Control & Ecol Secur, 1515 Zhongshan Second North Rd, Shanghai 200092, Peoples R China;[4]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalys, Shanghai 200237, Peoples R China

年份：2022

卷号：17

期号：13

外文期刊名：CHEMISTRY-AN ASIAN JOURNAL

收录：;EI(收录号：20222112133618);WOS:【SCI-EXPANDED(收录号:WOS:000797222300001)】；

基金：This work was supported by the National Natural Science Foundation of China (21906056, 51778230), Program of Shanghai Outstanding Technology Leaders (Grant No. 20XD1433900), the National Key Research and Development Program of China (Grant No. 2017YFB0602601), Shanghai Municipal Science and Technology (No. 20DZ2250400) and Shanghai Sailing Program (19YF1411900). The authors wish to acknowledge Prof. Wen Liu and Dr. Haodong Ji, Peking University for their help in DFT calculation.

语种：英文

外文关键词：Photocatalysis; Cyclodextrin; Titanate nanotube; Oxygen activation; Paracetamol

摘要：Titanate nanotubes (TNTs) were coated with a cyclic oligosaccharide (carboxymethyl-beta-cyclodextrin, CM-beta-CD) to obtain a photocatalyst (CM-beta-CD-TNT) for efficiently activating molecular oxygen and removing the target contaminant. The hydrophobic cavity and the large specific surface area of the photocatalyst provide abundant active sites for activating molecular oxygen. The free radical capture experiment and quenching experiment showed that cyclodextrin could facilitate adsorption and activation of molecular oxygen to produce O-2(.-). Therefore, compared with the pristine TNT, CM-beta-CD-TNT accelerated the oxidation efficiency of paracetamol (APAP) by 3.4 times. Moreover, the ring cleavage reaction induced by CM-beta-CD-TNT effectively reduced the acute toxicity of wastewater containing APAP. Furthermore, 100% of bisphenol A (BPA), bisphenol S (BPS), phenol, 2,4-dichlorophen (2,4-DCP), and carbamazepine (CBZ) were degraded by CM-beta-CD-TNT after 2.5 h ultraviolet (UV) light irradiation. This strategy provides a new dimension for the advanced treatment of organic wastewater by organic macrocyclic molecule-modified materials.