文献类型：期刊文献

英文题名：Metal-Organic Framework MIL-101(Fe) Nanoparticles Decorated with Ag Nanoparticles for Regulating the Photocatalytic Phenol Oxidation Pathway for Cr(VI) Reduction

作者：Gong, Jianqiu[1,2];Zhang, Weiwei[1,2];Sen, Tapas[3];Yu, Yichen[1,2];Liu, Yuchen[1,2];Zhang, Jinlong[1,2];Wang, Lingzhi[1,2]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalys, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem,Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Univ Cent Lancashire, Ctr Mat Sci, Sch Phys Sci & Comp, Preston PRI 2HE, Lancs, England

年份：2021

卷号：4

期号：5

起止页码：4513

外文期刊名：ACS APPLIED NANO MATERIALS

收录：;EI(收录号：20212010357772);WOS:【SCI-EXPANDED(收录号:WOS:000657373800025)】；

基金：This work was supported by the Science and Technology Commission of Shanghai Municipality (18520710200 and 20DZ2250400), the National Natural Science Foundation of China (21972040 and 21673073), and Shanghai Pujiang Program (18PJD012). The project was supported by the Shanghai Municipal Science and Technology Major Project (no. 2018SHZDZX03) and the Program of Introducing Talents of Discipline to Universities (nos. B20031 and B16017).

语种：英文

外文关键词：photocatalysis; Ag/AgCl/MIL-101(Fe); Cr(VI) reduction; phenol degradation; quinone derivatives; O-1(2)

摘要：Photocatalysis is a promising technology to treat dilute phenol-Cr(VI) mixture, where photoinduced electrons are commonly thought of as the main active species for Cr(VI) reduction. However, it generally depends on the surface adsorption to achieve efficient electron transfer. Meanwhile, the possible contribution of reductive quinone derivatives oxidized from phenol to Cr(VI) reduction has been rarely explored. The key is to explicitly understand the relation between the phenol oxidation pathway and Cr(VI) reduction. Herein, Ag/AgCl/MIL-101(Fe) prepared by directly loading Ag nanoparticles on MIL-101(Fe) was applied to the joint treatment of phenol and Cr(VI). The role of quinone derivatives in reducing Cr(VI) was revealed by excluding the surface adsorption. During the phenol oxidation, center dot OH radicals were more consumed in the initial stage for the ring opening of phenol. Meanwhile, O-1(2) evolved from center dot O(2)(-)gradually caused the accumulation of reductive quinone intermediates, which dramatically accelerated the Cr(VI) reduction afterward. This study demonstrates the significance of controlling the evolution process of active oxygen species for the joint photocatalytic treatment of phenol-Cr(VI) mixture.