文献类型：期刊文献

英文题名：Hierarchical Anion Exchange and Reverse Electron Transfer in Layered Double Hydroxides/Peroxymonosulfate System for Roxarsone Elimination

作者：Wang, Yu[1];Zhou, Jie[1];Pei, Wenkai[1];Zheng, Yifan[2,3];Gao, Jianyu[1];Lei, Juying[1,5];Liu, Yongdi[1,5];Zhou, Liang[1,4,5,6];Zhang, Jinlong[2,3]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Joint Int Res Lab Precis Chem & Mol Engn, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[4]Kyoto Univ, Dept Mol Engn, Grad Sch Engn, Kyoto 6158510, Japan;[5]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[6]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

年份：2024

卷号：40

期号：35

起止页码：18683

外文期刊名：LANGMUIR

收录：;EI(收录号：20243416915751);WOS:【SCI-EXPANDED(收录号:WOS:001295132500001)】；

基金：This work was supported by the National Key R&D Program of China (2022YFE0107900), the National Natural Science Foundation of China (22006038 and 21972040), the Science and Technology Commission of Shanghai Municipality (22230780200, 21230712000, and 20DZ2250400), the Innovation Program of Shanghai Municipal Education Commission (2021-01-07-00-02-E00106), the Fundamental Research Funds for the Central Universities (222201717003), the Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (No. QA202319), and the Chenguang Program of Shanghai Education Development Foundation and Shanghai Municipal Education Commission (No. 23CGA40).

语种：英文

外文关键词：Arsenic compounds - Crosslinking

摘要：Roxarsone (ROX) is the main form of arsenic pollution in the world, and developing effective methods for its elimination is beneficial to human health and the ecological environment. Herein, we report glutaraldehyde cross-linked chitosan-encapsulated CoCe-LDH (layered double hydroxides) as an outstanding catalyst for the advanced oxidation of ROX and the efficient adsorption of inorganic arsenic. 100% of ROX and more than 98.5% of As(III)/As(V) were eliminated, and over 99.3% of remaining inorganic arsenic was oxidized to low-toxicity As(V) in the peroxymonosulfate (PMS) activation system, and some specific properties of LDH are considered the main reasons. The hierarchical anion exchange has been confirmed to be beneficial for constructing a high-concentration PMS interlayer microenvironment. The unique reverse electron transfer process induced 100% selective production of singlet oxygen. This work not only develops an advanced ROX removal method but also provides a new understanding of the LDH-based advanced oxidation process.