文献类型：期刊文献

英文题名：Conjugated CdS/CNTs/ZnxAg1-xWO4 S-scheme heterostructure for enhanced photocatalytic degradation of antibiotics: Targeting photogenic charge separation and transmission

作者：Wu, Yadong Zhang, Xinyi Zhou, Jiajie Yi, Yu Xie, Ruishi Huang, Hongsheng Wu, Qijun

第一作者：Wu, Yadong

通信作者：Huang, HS[1];Wu, QJ[1];Xie, RS[2]|[144406c0812405d42e8a8]黄宏升;[14440d91d782df18e7be0]吴其俊;

机构：[1]Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China;[2]Guizhou Univ, Coll Resources & Environm Engn, Guiyang 550003, Peoples R China;[3]Southwest Univ Sci & Technol, Analyt & Testing Ctr, Sch Mat & Chem, Mianyang 621010, Peoples R China;[4]Southwest Univ Sci & Technol, Analyt & Testing Ctr, Sch Mat Sci & Engn, Mianyang 621010, Peoples R China

第一机构：贵州理工学院化学工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Chem Engn, Guiyang 550003, Peoples R China;corresponding author), Southwest Univ Sci & Technol, Analyt & Testing Ctr, Sch Mat Sci & Engn, Mianyang 621010, Peoples R China.|贵州理工学院化学工程学院;贵州理工学院;

年份：2023

卷号：961

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20232614322489);Scopus(收录号：2-s2.0-85163159643);WOS:【SCI-EXPANDED(收录号:WOS:001027528000001)】；

基金：& nbsp;This study was supported by the Education Department of Guizhou Province (QJJ [2022] 266) ; Scientific Fund of Southwest University of Science and Technology (21zx7130) ; Natural Science Foundation of Sichuan Province (23NSFSC4305) and National Science Foundation of China (No. 21963006, 2150344, 42072048) ; High Level Talent Scientific Research Startup Project of Guizhou Institute of Technology (XJGC20190614) and Natural Science Foundation of Guizhou Provincial Department of Education (Qianjiaohe KY Zi [2017] 009) .

语种：英文

外文关键词：Conjugation effect; S-scheme heterojunction; Redox pathway; Energy level; Visible light photocatalysis

摘要：Manipulating charge transfer at the nanostructure interface of a S-scheme heterostructure is critical to the photocatalytic performance and practical application. Here, we design a novel S-scheme conjugated photocatalyst CdS/CNTs/ZnxAg1-xWO4 (CZA/CNx) capable of accelerating antibiotic degradation under visible light. Experimental results showed that first-order kinetic constants of CZA/CNx were 1.59, 2.57, and 1.73 times that of CdS/ZnxAg1-xWO4 for amoxicillin degradation, respectively. A series of characterization analysis demonstrated that delocalized & pi;-bonds were existed in a whole composite system (S=C-C=C & BULL;& BULL;& BULL;C=O) and its could produce a easily excited state of triplet state T1 instead of lowest singlet excited state S1 generated from the ground state (S0). In situ XPS indicated that the electrons will migrate from CdS to ZA/ CNx via conjugated redox pathway. Furthermore, this pathway of charge transfer is prevented from the opposite trend, which is depended on establishment of internal electric field and a Schottky barrier in S-scheme conjugated photocatalyst. The density functional theory calculation (DFT) revealed Fermi level of CdS and ZAx were -3.81 eV and -6.80 eV, indicating the conjugated redox pathway of electron transfer is feasible. The successful application of this S-scheme conjugated photocatalyst strategy provide a new direction of conjugated photocatalyst synthesis to address the increasing antibiotic contamination. & COPY; 2023 Published by Elsevier B.V.