文献类型：期刊文献

英文题名：Generating High-valent Iron-oxo ≡FeIV=O Complexes in Neutral Microenvironments through Peroxymonosulfate Activation by Zn-Fe Layered Double Hydroxides

作者：Bao, Yan[1,2,3];Lian, Cheng[4];Huang, Kai[4];Yu, Haoran[1,2,3];Liu, Wenyuan[1,2,3];Zhang, Jinlong[1,2,3];Xing, Mingyang[1,2,3]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Joint Int Res Lab Precis Chem & Mol Engi Neering, Feringa Nobel Prize Scientist Joint Res Ctr,Sch C, Inst Fine Chem,Frontiers Sci Ctr Materiobiol & Dy, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environ Mental C, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Chem & Mol Engn, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：61

期号：42

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20223412586750);WOS:【SCI-EXPANDED(收录号:WOS:000865680900071)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 22176060; 21822603). Project supported by Shanghai Municipal Science and Technology Major Project (Grant No.2018SHZDZX03), the Program of Introducing Talents of Discipline to Universities (B16017), and the Science and Technology Commission of Shanghai Municipality (20DZ2250400). Authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：Amphotericity; High-Valent Iron-Oxo Complexes; Layer Double Hydroxide; Neutral Microenvironment; Peroxymonosulfate

摘要：The universal limit on the pH conditions is disturbing peroxymonosulfate (PMS)-triggered high-valent iron-oxo systems in environmental applications. Here, we propose for the first time the construction of a neutral microenvironment on the surface of Zn-Fe layered double hydroxide (ZnFe-LDH) by using the amphoteric properties of zinc hydroxide, which continuously generates equivalent to Fe-IV=O over a wide pH range of 3.0-11.0 in activating PMS. The equivalent to Zn(OH)(2) moiety offers a neutral microenvironment at the phase interface, which mitigates the self-decomposition of equivalent to Fe-IV=O by protons and the hydrolysis reaction of iron by hydroxyl groups, which is supported by the Mossbauer spectra, density functional theory calculations and designed experiments. Consequently, ZnFe-LDH/PMS can satisfy the stability in long-term experiments, selectivity under conditions with high salinity or natural organic matter and efficient treatment of actual wastewater.