文献类型：期刊文献

英文题名：Activation of peroxymonosulfate by LaCO3OH coupled with N, S co-doped graphene for levofloxacin degradation

作者：Pei, Wenkai[1,2];Wang, Yu[1,2];Liu, Yujie[2,3];Zhou, Liang[1,2,4,5];Lei, Juying[1,2,4];Zhang, Jinlong[1,2,3]

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, Res Ctr Econophys, 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]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[5]Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

年份：2024

卷号：344

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20241415840003);WOS:【SCI-EXPANDED(收录号:WOS:001325277300001)】；

基金：This work was supported by National Key Research and Development Program of China (2022YFE0107900, 2022YFB3803600), the National Natural Science Foundation of China (22006038, 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) and Open Project of State Key Laboratory of Urban Water Resource and Environment (Grant No QA202319).

语种：英文

外文关键词：Antibiotic; Peroxymonosulfate; Rare earth metal; Reaction mechanism

摘要：There is currently great potential in peroxymonosulfate (PMS) activation by metal-based materials for contaminant treatment. However, secondary environmental damage from common transition metals is often unavoidable. Rare earth metals with high energy level, multi-electron configuration and unique 4f orbital can be used as an electron transfer bridge to reduce interfacial energy loss and promote electron transfer, which were incorporated the catalyst to activate PMS. In this study, calcination and hydrothermal methods were combined to fabricate LaCO3OH in combination with N, S co-doped graphene (LCOH/G(NS)), which exhibited efficient levofloxacin (LVX) degradation. The results indicated that the LVX removal efficiency reached 89.6 %, and the La3+ leaching was as low as 1.2 mg/L. LaCO3OH (LCOH) was first used for PMS activation and showed excellent degradation properties and reduced ecotoxicity. Doping the graphene matrix with N and S enhances the adsorption of PMS, increases electron transfer and reduces leaching of metal ions, thus promoting the interaction and reaction between LCOH and PMS. As confirmed by radical quenching tests and EPR technique, multiple oxidative pathways may be involved in the degradation process. This paper presented an innovative approach to the rational design of rare earth metal-based carbon catalysts, and it was expected that LCOH/G(NS)-PMS would prove to be a promising technology for degrading antibiotics in wastewater treatment.