文献类型：期刊文献

英文题名：Photochemical solid-phase in situ anchoring of single atoms Ag/g-C3N4for enhanced photocatalytic activity

作者：Zhou, Jianwei[1]; Duo, Fangfang[1]; Jia, Chunyan[2]; Zhou, Yuan[2]; Wang, Chubei[1]; Wei, Zhengyan[2]

机构：[1] Institute of Energy and Fuel, Xinxiang University, Xinxiang, China; [2] College of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang, China

第一机构：新乡学院化学化工学院

年份：2021

卷号：38

期号：11

起止页码：1098-1107

外文期刊名：Environmental Engineering Science

收录：EI(收录号：20214811231096);Scopus(收录号：2-s2.0-85119656060)

语种：英文

外文关键词：Biodegradation - Rate constants - Solar light - Water pollution - Light - Photocatalysts - Synthesis (chemical) - Photocatalytic activity - Organic pollutants - Silver - Atoms - Water treatment - Carbon nitride - Rhodium compounds - Catalyst activity - Image enhancement - Photodegradation - Surface plasmon resonance - Transmission electron microscopy

摘要：To realize the high-efficiency plasmonic hot-electron injection in photocatalytic pollutant elimination, Ag/g-C3N4 heterostructure photocatalyst was synthesized through a novel in situ photochemical solid-phase reduction approach. Transmission electron microscope images of the obtained samples showed that Ag atom was uniformly dispersed on the surface of g-C3N4 sheet, thus can fully utilize the local surface plasmon resonance of metallic Ag and then improve the photocatalytic performance of Ag/g-C3N4. It is reported that Ag/g-C3N4 heterojunction presented significantly enhanced sunlight absorption and inhibited the recombination of photoinduced carriers, and further reinforced the photocatalytic performance of g-C3N4 substrate. The 3 wt%-Ag/g-C3N4 exhibited the best catalytic activity toward rhodamine B (RhB) and phenol degradation under visible light irradiation, with apparent rate constants of 0.016 and 0.018 min-1, which was 8 and 10 times that of pure g-C3N4, respectively. This work supplied an advanced approach for constructing efficient solar light-driven photocatalysts, which would be making a certain contribution to the control of water pollution. ? Copyright 2021, Mary Ann Liebert, Inc., publishers 2021.