文献类型：期刊文献

英文题名：Enhanced PMS activation by Mn2O3-loaded h-BN for levofloxacin removal: Unveiling the dominant influence of non-free radical pathway and N-Mn-mediated promotion of stable, long-lived Mn(IV) species

作者：Zhao, Qingzi[1,2];Wu, Yizhou[1,2];Zhang, Xinxi[1,2];Zhou, Liang[1,2,3,4];Lu, Sitong[5,8];Zhang, Jinlong[4,5,6,7];Liu, Yongdi[1,2,4];Lei, Juying[1,2,3,4,8]

机构：[1]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asses, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[4]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalysi, 130 Meilong Rd, Shanghai 200237, Peoples R China;[5]Shanghai Geol Engn Explorat Grp Co Ltd, Shanghai 200072, Peoples R China;[6]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[7]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;[8]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai, Peoples R China

年份：2024

卷号：657

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20241015672604);WOS:【SCI-EXPANDED(收录号:WOS:001197549200001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (22076046, 22176061) , the Shanghai Pujiang Program (21PJD016) , the Science and Technology Commission of Shanghai Municipality (21230712000) , and the Fundamental Research Funds for the Central Universities (SLB13233301, JKB01231836) .

语种：英文

外文关键词：Peroxymonosulfate activation; Boron nitride; Degradation

摘要：The Mn2O3-loaded hexagonal boron nitride (h-BN-Mn) catalyst for peroxymonosulfate (PMS) activation was successfully synthesized using a one-step calcination process. The h-BN-Mn/PMS system achieved an impressive 97 % levofloxacin removal within a mere 90 -minute timeframe. This catalyst, h-BN-Mn, effectively addresses the challenge of elevated manganese leaching rates and exhibits a broad pH degradation spectrum spanning from 3 to 11. Notably, it maintained robust degradation performance over five cycles, showcasing the potential for large -capacity water treatment when integrated with a polyvinylidene fluoride (PVDF) membrane (h-BNMn@PVDF), resulting in an 83.8 % removal rate over 6 h. In-depth analysis revealed three distinct degradation pathways. Primarily, the generation of reactive oxygen species (ROS), including singlet oxygen (1O2), played a pivotal role. This was complemented by direct electron transfer from the contaminant to the catalyst-PMS complex, augmented by contributions from Mn(IV) species derived from the complex. This study not only presents a compelling instance of antibiotic degradation through multi -pathway activated PMS but also sheds light on the remarkable synergistic effects achieved by combining manganese oxide with boron and nitrogen compounds.