文献类型：期刊文献

英文题名：The promoted Fenton degradation of norfloxacin by a S-ZnO modified MnFe2O4 with micro-acidic environment

作者：Pan, Ting[1];Wang, Danni[1];Song, Yanyu[1];Liu, Yongdi[1];Nghiem, Long D.[2];Duan, Jun[3];Che, Chengdan[4];Sun, Xianbo[1];Cai, Zhengqing[1,5]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China;[2]Univ Technol Sydney, Ctr Technol Water & Wastewater, Sch Civil & Environm Engn, Ultimo, NSW 2007, Australia;[3]Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA;[4]Shanghai LIRI Technol Co Ltd, Shanghai, Peoples R China;[5]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2025

卷号：506

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20250417765372);WOS:【SCI-EXPANDED(收录号:WOS:001421650300001)】；

基金：Financial supports from the National Natural Science Foundation of China (41807340, 22176061) , Natural Science Foundation of Shanghai [21ZR1415600] , and the Science and Technology Commission of Shanghai Municipality (21230712000) .

语种：英文

外文关键词：Heterogeneous Fenton; Microenvironment; Norfloxacin

摘要：This study synthesized MnFe2O4@S-ZnO with varying S-ZnO loading and investigated their catalytic activity towards Fenton degradation of norfloxacin (NOF). The MnFe2O4@S-ZnO/H2O2 system achieved 98.3 % of NOF removal within 60 min, with the catalytic activity enhanced by 1.8 times compared to MnFe2O4. XPS results indicated that Mn and Fe are the active catalytic sites. The doping of S elements accelerated the reduction rates of Fe3+ and Mn3+, thereby improving the utilization efficiency of H2O2 and generating more center dot OH radicals. The Lewis acidic sites on the surface of MnFe2O4@S-ZnO coordinated with and reduced the concentration of OH- in the suspension, thereby increasing the acidity of theMnFe2O4 catalyst surface, expanding the pH range of the Fenton reaction to alkaline conditions, allowing the composite material to maintain a NOF removal efficiency of over 90.0 % at even high pH (9.0-10.0). The presence of inorganic anions and humic acid (HA) played negative roles on the NOF degradation, but the MnFe2O4@S-ZnO/H2O2 system can still achieve a minimum NOF degradation of 62.8 % within 60 min. Moreover, the MnFe2O4@S-ZnO catalyst exhibited relatively high stability and possessed easy recoverability. Furthermore, this catalyst overcomes the pH limitations of the traditional Fenton reaction, demonstrating significant advantages and promising application prospects.