文献类型：期刊文献

英文题名：Efficient activation of peroxymonosulfate by MnS/Fe-MOF hybrid catalyst for sulfadiazine degradation: Synergistic effects and mechanism

作者：Han, Xiaolin[1,2];Zhang, Wei[1,2,3];Li, Shuai[1,2];Cheng, Congyu[1,2];Zhou, Lei[1,2,3];Jia, Qilong[1,2];Xiu, Guangli[1,2,3]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Environm Protect Key Lab Environm Stand, Shanghai 200237, Peoples R China;[3]Tongji Univ, Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China

年份：2022

卷号：287

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20220511576684);WOS:【SCI-EXPANDED(收录号:WOS:000780379100001)】；

基金：Acknowledgements This work was supported by the Natural Science Foundation of Shanghai [No. 17ZR1407000] , the National Natural Science Foundation of China [No. 41201302] , and the Fundamental Research Funds for the Central Universities [No. 222201514337] .

语种：英文

外文关键词：MnS; Metal organic frameworks; PMS; SDZ; Mechanism

摘要：In this work, MnS/Fe-MOF composites were synthesized by a mild one-pot method and employed as efficient activators of peroxymonosulfate (PMS) for sulfadiazine (SDZ) removal in water. The surface morphology and structure of MnS/Fe-MOF was characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, flourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. As expected, the as-prepared MnS10/Fe-MOF presented complete SDZ degradation within 30 min in the presence of 0.2 g/L catalyst and 0.6 mM PMS, which was better than those with Co2S/Fe-MOF, CoS/Fe-MOF and MoS2/Fe-MOF as well as other reported catalysts. The effects of experimental conditions, co-existing anions and humic acid on catalytic performance of MnS/Fe-MOF were also investigated. Moreover, (OH)-O-center dot, SO4 center dot-, O-2(center dot-) and O-1(2) were evidenced to participate in the activation process using quenching experiments and electro-spin resonance spectrometer. The results of XPS analysis of MnS10/Fe-MOF before and after the reaction confirmed the synergistic effects between multivalent Mn, Fe and S species in MnS/Fe-MOF, which was beneficial for the rapid Mn+1/Mn+ (M stands for Fe and Mn) recycling. This is the first work expounding the facile synthesis method of MnS/Fe-MOF composites and its synergistic mechanism as an efficient PMS activator for the degradation of antibiotics.