Dual metal ions/BNQDs boost PMS activation over copper tungstate photocatalyst for antibiotic removal:Intermediate,toxicity assessment and mechanism

作     者：Ruyao Chen Haiyue Zhang Yuming Dong Haifeng Shi Ruyao Chen;Haiyue Zhang;Yuming Dong;Haifeng Shi

作者机构：School of ScienceJiangnan UniversityWuxi214122China The Key Laboratory of Synthetic and Biological ColloidsMinistry of EducationJiangnan UniversityWuxi214122China National Laboratory of Solid State MicrostructuresNanjing UniversityNanjing210093China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2024年第170卷第3期

页      面：11-24页

核心收录：

学科分类：081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 0806[工学-冶金工程] 08[工学] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：the financial support of this work from the National Natural Science Foundation of China(No.22172064) the Special Fund Project of Jiangsu Province for Scientific and Technological Innovation in Carbon Peaking and Carbon Neutrality(BK20220023) the foundation of Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,Jiangnan University(No.1042050205225990/009) National Laboratory of Solid State Microstructures,Nanjing University(No.M34047) 

主　　题：Dual redox cycles Photocatalysis Peroxymonosulfate BN quantum dots Toxicity assessment 

摘      要：In the metal-based peroxymonosulfate(PMS)activation process,the sluggish surface redox cycle of metal ions generally hampered the efficiency of PMS activation for pollutant ***,Codoped CuWO 4/BN quantum dots(CW/Co/BNQDs)photocatalysts were developed to realize Cu^(2+)/Cu+and Co^(2+)/Co^(3+)dual ions redox cycles for PMS activation,which would facilitate the tetracycline(TC)***/4Co/2BNQDs could degrade 94.8%TC within 30 min in PMS/Vis system,and the apparent rate constant of CW/4Co/2BNQDs was 2.7 times and 1.2 times higher than those of CW and CW/4Co,*** improved TC degradation performance could be attributed to the synergetic effect between BNQDs and dual redox cycles.X-ray photoelectron spectroscopy(XPS)spectra of samples before and after the reaction demonstrated that BNQDs were beneficial for accelerating the Cu^(2+)/Cu+and Co^(2+)/Co^(3+)redox cycles in CW/4Co/2BNQDs,further boosting the activation of PMS in TC *** of different radical scavengers revealed that the SO_(4)^(·−)/·OH/h+/^(1)O_(2)reactive species participated in the PMS activation for the TC degradation *** possible TC degradation pathway and intermediate toxicity were detailed *** addition,CW/4Co/2BNQDs exhibited outstanding photocatalytic activity over five consecutive cycles,which illustrated that it was supposed to be a reliable PMS activator over antibiotic elimination for practical *** this work shed new light on constructing dual redox cycles for efficient PMS activation.