title: In-situ synthesis of highly efficient visible light driven stannic oxide/graphitic carbon nitride heterostructured photocatalysts.
abstract: Novel and efficient visible-light-driven stannic oxide/graphitic carbon nitride heterostructured photocatalysts are prepared via a simple in-situ solvothermal method. Characterization results demonstrate that there exist strong interactions between SnO2 nanoparticles and g-C3N4 matrix, which indicates the formation of SnO2/g-C3N4 heterojunction. The as-synthesized SnO2/g-C3N4 composite exhibits improved efficiency for photodegradation of rhodamine B in aqueous solutions, with an apparent rate constant 6.5 times higher than that of commercial TiO2 (Degussa P25). The enhanced photocatalytic activity is attributed to synergistic effect between SnO2 and g-C3N4, resulting in effective interfacial charge transfer and prolonged charge-hole separation time. Moreover, SnO2/g-C3N4 composite photocatalysts possess excellent durability and stability after 6 recycling runs, and a possible photocatalytic mechanism is also proposed. This research highlights the promising applications of two dimensional g-C3N4 based composite photocatalysts in the field of waste water disposal and environmental remediation.
authors.affiliation: State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China University of Petroleum, Qingdao 266580, China.
authors.forename: Binglin
authors.initials: B
authors.lastname: Tao
authors.affiliation: State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China University of Petroleum, Qingdao 266580, China. Electronic address: zfyancat@upc.edu.cn.
authors.forename: Zifeng
authors.initials: Z
authors.lastname: Yan
keywords: Catalytic property; Composite; Heterojunction; Solvothermal