文献类型：期刊文献

英文题名：0D/2D plasmonic Cu2-xS/g-C3N4 nanosheets harnessing UV-vis-NIR broad spectrum for photocatalytic degradation of antibiotic pollutant

作者：Zhou, Liang[1];Liu, Zhihang[1];Guan, Zhipeng[2];Tian, Baozhu[2];Wang, Lingzhi[2];Zhou, Yi[1,3];Zhou, Yanbo[1,3];Lei, Juying[1,3,4];Zhang, Jinlong[2];Liu, Yongdi[1,3,4]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 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, Key Lab Adv Mat & Joint Int Res Lab Precis Chem &, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[4]East China Univ Sci & Technol, Natl Engn Lab High Concentrat Refractory Organ Wa, Shanghai 200237, Peoples R China

年份：2020

卷号：263

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20194807741605);WOS:【SCI-EXPANDED(收录号:WOS:000510526000046)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21777044, 5171101651, 21677048 and 21811540394), the National Key Research and Development Program (2016YFA0204200), the National Water Pollution Control and Treatment Science and Technology Major Project (2017ZX07207002), the Science and Technology Commission of Shanghai Municipality (17520711500, 19ZR1472400, 19230711300), and the Fundamental Research Funds for the Central Universities (222201714061, 222201915012, 222201814053, 222201917009 and 222201818014).

语种：英文

外文关键词：Localized surface plasmon resonances; Cu2-xS; g-C3N; Levofloxacin degradation

摘要：Localized surface plasmon resonances (LSPRs) are usually achieved by some small grains of noble metal (Au, Ag et al.) to enhances the light absorption and charge carrier's concentration of photocatalysts, but the wide application of noble metals is limited by their high cost. Here, we report the preparation of 0D/2D plasmonic Cu2-xS/g-C3N4 nanosheets (CSCNNs) and the utilization of LSPRs generated from Cu2-xS nanodots instead of noble metals to improve the photocatalytic activity for degradation of typical antibiotic levofloxacin (LVX). One-step hydrothermal method was employed to grow the highly dispersed Cu2-xS nanodots on the g-C3N4 nanosheets. Various characterization techniques verify the strong light absorption capacity and longer carriers' lifetime for CSCNNs. The analysis of band structure reveals the efficient separation and transmission mechanism of photogenerated electrons and holes. More importantly, LSPRs has been proved to be effective in increasing the light absorption in near infrared (NIR) region and the theoretical finite difference time domain (FDTD) simulations demonstrated that Cu2-xS LSPR-induced electromagnetic field in g-C3N4 nanosheets was far stronger than that of Ag and Au in NIR region. Consequently, efficient photocatalytic degradation of LVX under full solar spectrum (UV-vis-NIR) can be achieved for CSCNNs. This work will lead to a cheap and efficient LSPR photocatalysis system for treatment of antibiotic wastewater or other photocatalytic applications.