光催化
材料科学
异质结
三元运算
化学工程
制氢
X射线光电子能谱
纳米复合材料
分解水
氢
光电子学
化学
纳米技术
催化作用
计算机科学
有机化学
工程类
程序设计语言
作者
Krishnendu Das,Ranjit Bariki,Dibyananda Majhi,Abtar Mishra,Kundan Kumar Das,Rohan Dhiman,Braja Gopal Mishra
标识
DOI:10.1016/j.apcatb.2021.120902
摘要
Facile fabrication of visible light responsive multicomponent heterostructure photocatalysts with synergistic photoelectron migration is an effective approach with potential application in water remediation and renewable energy generation. In this study, a series of ternary multi-heterojunction CdS/Bi20TiO32/Bi4Ti3O12 (CdSxBTC) photocatalysts were prepared by hydrothermal deposition of CdS nanoparticles (15–25 nm) over one pot combustion synthesized Bi20TiO32/Bi4Ti3O12 (BTC) nanostructures. Comprehensive characterization of the ternary composites revealed enhanced optical absorption, high interfacial contact, fast electron channelization and a prolonged excited state life time. The CdSxBTC composite materials displayed enhanced photocatalytic activity for endosulfan degradation (kapp value 6–12 times greater than pure semiconductors) and water splitting reaction (H2 production rate 1890 μmolg−1h−1 and apparent conversion efficiency 19%). The cell viability -study disclosed non-cytotoxic nature of the treated endosulfan solution. A synergistic Type-I bridged coupled Z-scheme electron migration process accounted for robust radical generation ability (•O2− and •OH) and photocatalytic activity of the ternary composites.
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