文献类型：期刊文献

英文题名：Z-scheme photo-Fenton system for efficiency synchronous oxidation of organic contaminants and reduction of metal ions

作者：Zhou, Yi[1,2,3];Zhou, Lei[3];Zhou, Yanbo[3];Xing, Mingyang[1,2];Zhang, Jinlong[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem,Frontiers Sci Ctr Materiobiol & Dy, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2020

卷号：279

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20203108995398);WOS:【SCI-EXPANDED(收录号:WOS:000566454400006)】；

基金：This work was supported by the National Natural Science Foundation of China (Nos. 21677048, 21822603, 21972040, 21773062, 5171101651, 21577036, 21906056), the State Key Research Development Program of China (No. 2016YFA0204200), the Shanghai Pujiang Program (Nos. 17PJD011), Shanghai Sailing Program (19YF1411900), Shanghai Municipal Science and Technology (17520711500) and the Program of Introducing Talents of Discipline to Universities (B20031) and the Fundamental Research Funds for the Central Universities (Nos. 22221818014, 22A201514021). The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：Photo-Fenton; Z-scheme; Synchronous REDOX; Iron cycle; Toxicity

摘要：The applications of traditional photo-Fenton reaction are mainly limited by the low photo generated electron concentration, resulting in the low Fe3+/Fe2+ conversion efficiency and low concentration of reactive oxygen specious (ROS). In this study, a mesoporous TiO2 single crystal decorated by platinum (Pt) nanoparticles and molybdenum disulfide (MoS2) hybrid Z-scheme system (Pt-MSCs@MoS2) is successfully synthesized for efficiency synchronous REDOX. The construction of Z-scheme composite leads to the consumption of photo-generated hole (h + ) and prolongs the lifetime of the electrons (e(-)) of MoS2, so as to ensure that the MoS2 is exposed with Mo4+ active sites and exhibits high efficiency for Fe2+/Fe3+ cycling. The high Fe2+/ Fe3+ ratio of Z-scheme photo-Fenton system is conducive to the decomposition of hydrogen peroxide (H2O2) to produce more OH. High concentration of photo-generated e - with high reduction potential is conducive to the reduction and recovery of various metal ions, such as Cr6+, Ag+ , Cu+ and Ni+ . Therefore, the Z-scheme photo-Fenton system shows strong synchronous REDOX performance for removal of different emerging organic contaminants and recovery of different metal ions. The reasonable mechanism of Z-scheme photo-Fenton system and oxidation pathway of carbamazepine (CBZ) were investigated by experimental analysis and molecular orbital calculation. The toxicities of CBZ and its oxidation intermediates in Z-scheme photo-Fenton systems were compared by Toxicity Estimation Software (T.E.S.T.) based on quantitative structure-activity relationship (QSAR). This Z-scheme provides a high efficiency synchronous REDOX strategy for wastewater treatment.