文献类型：期刊文献

英文题名：A-site defect regulates d-band center in perovskite-type catalysts enhancing photo-assisted peroxymonosulfate activation for levofloxacin removal via high-valent iron-oxo species

作者：Pei, Wenkai[1,2];Ma, Xuanqi[1,2];Wu, Yangjie[1,2];Wang, Yu[1,2];Zhou, Liang[1,2,5,6];Lei, Juying[1,2,5];Yamashita, Hiromi[7];Zhang, Jinlong[1,2,3,4]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Joint Int Res Lab Precis Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[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;[7]Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Osaka 5650871, Japan

年份：2025

卷号：371

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20251218089235);WOS:【SCI-EXPANDED(收录号:WOS:001456079400001)】；

基金：This work was supported by National Key Research and Development Program of China (2022YFE0107900) , the National Natural Science Foundation of China (22461142136, 22476050, 21972040) , the Innovation Program of Shanghai Municipal Education Commission (2021-01-07-00-02-E00106) , the Science and Technology Commission of Shanghai Municipality (22230780200, 20DZ2250400) , Fundamental Research Funds for the Central Universities (222201717003) , Open Project of State Key Laboratory of Urban Water Resource and Environment (Grant 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：MOF-derived; Perovskite; High-valence iron; Levofloxacin removal; PMS activation

摘要：The high-valent iron-oxo species (Fe(IV)=O) attracted widespread attention for water cleaning due to its long lifetime, high reductive potential and strong anti-interference ability. However, formation of Fe(IV)=O is challenging because of the low conversion efficiency of Fe(III)/Fe(II) and the high activation barrier of Fe(II)peroxymonosulfate (PMS) complex. Herein, A-site defect and oxygen vacancy (Ov) were ingeniously incorporated into perovskite via the metal-organic framework (MOF) derivation method with the objective of activating PMS for the degradation of levofloxacin (LVX) under visible light conditions. The introduction of dual defects could stretch the Fe-O bond and induce a transformation in the electron spin state of Fe, from low spin (LS) to medium spin state (MS), resulting in an upward shift of the d-band center, which reduces the barrier for Fe(IV)= O formation. Furthermore, MOF-derived La0.8FeO3-delta (Md-La0.8FeO3-delta) exhibited superior reactivity, selectivity and environment robustness. This work proposes a strategy for improving the formation of Fe(IV)=O through regulating the induced oxygen vacancies triggered by the A-site defect in perovskite.