Multiple interface coupling on natural tourmaline enables high-efficiency removal of antibiotic:Superior property and mechanism  

作　　者：Jingjing Cui Xiangyu Liu Feifan Qie Chengzhe Xie Qingdong He Jian Liu Steven L.Suib Wenbo Wang 

机构地区：[1]College of Chemistry and Chemical Engineering,Inner Mongolia University,Hohhot 010021,China [2]Department of Chemistry,University of Connecticut,Storrs,CT 06269-3060,United States

出　　处：《Journal of Environmental Sciences》2024年第6期242-254,共13页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.22068027);the“Grassland Talents”Project of Inner Mongolia Autonomous Region(No.CCYCLJ202);the Inner Mongolia University Research Start-up Research Project(No.21300-5205122)。

摘　　要：Reasonably designing highly active,environmentally friendly,and cost-effective catalysts for efficient elimination of pollutants from water is desirable but challenging.Herein,an efficient heterogeneous photo-Fenton catalyst tourmaline(TM)/tungsten oxide(WO_(3-x))(named TW10)containing tungsten/boron/iron(W/B/Fe)synergistic active centers and 90%of cheap natural tourmaline(TM)mineral rich in Fe and B elements.The TW10 catalyst can quickly activate peroxymonosulfate(PMS)to generate massive active free radicals,which may induce the rapid and efficient degradation of tetracycline(TC).The TW10/PMS/Visible light system can effectively degrade up to 98.7%of tetracycline(TC)in actual waters(i.e.seawater,Yellow River,and Yangtze River water),and the catalytic degradation rates reach 1.65,5.569,and 2.38 times higher than those of TM,WO_(3-x),and commercial P25(Degussa,Germany),respectively.In addition,the catalyst can be recycled and reused multiple times.Electron spin resonance spectroscopy(EPR),X-ray photoelectron spectroscopy(XPS),and liquid chromatograph-mass spectrometer(LC-MS)analyses confirm that the synergistic catalytic effect of W/B/Fe sites on the TW10 catalyst accelerates the electron transfer between Fe(Ⅱ)and Fe(Ⅲ),as well as between W(Ⅴ)and W(Ⅵ),and thus promotes the rapid degradation of TC.The catalytic reaction mechanism and degradation pathway of TC were explored.This work provides a feasible route for the design and development of new eco-friendly and efficient catalyst.

关 键 词：Tourmaline(TM) Fenton-like catalyst Tungsten oxide PEROXYMONOSULFATE Antibiotic 

分 类 号：X703[环境科学与工程—环境工程] TQ426[化学工程]