title: Constructing Solid-Gas-Interfacial Fenton Reaction over Alkalinized-C3N4Photocatalyst To Achieve Apparent Quantum Yield of 49% at 420 nm.
abstract: Efficient generation of active oxygen-related radicals plays an essential role in boosting advanced oxidation process. To promote photocatalytic oxidation for gaseous pollutant over g-C3N4, a solid-gas interfacial Fenton reaction is coupled into alkalinized g-C3N4-based photocatalyst to effectively convert photocatalytic generation of H2O2into oxygen-related radicals. This system includes light energy as power, alkalinized g-C3N4-based photocatalyst as an in situ and robust H2O2generator, and surface-decorated Fe3+as a trigger of H2O2conversion, which attains highly efficient and universal activity for photodegradation of volatile organic compounds (VOCs). Taking the photooxidation of isopropanol as model reaction, this system achieves a photoactivity of 2-3 orders of magnitude higher than that of pristine g-C3N4, which corresponds to a high apparent quantum yield of 49% at around 420 nm. In-situ electron spin resonance (ESR) spectroscopy and sacrificial-reagent incorporated photocatalytic characterizations indicate that the notable photoactivity promotion could be ascribed to the collaboration between photocarriers (electrons and holes) and Fenton process to produce abundant and reactive oxygen-related radicals. The strategy of coupling solid-gas interfacial Fenton process into semiconductor-based photocatalysis provides a facile and promising solution to the remediation of air pollution via solar energy.
authors.affiliation: TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University , Tianjin 300072, PR China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, PR China.
authors.forename: Yunxiang
authors.initials: Y
authors.lastname: Li
authors.affiliation: TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University , Tianjin 300072, PR China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, PR China.|Key Lab of Advanced Ceramics and Machining Technology, Ministry of Education , Tianjin 300072, PR China.
authors.forename: Shuxin
authors.initials: S
authors.lastname: Ouyang
authors.affiliation: TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University , Tianjin 300072, PR China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, PR China.|Key Lab of Advanced Ceramics and Machining Technology, Ministry of Education , Tianjin 300072, PR China.
authors.forename: Hua
authors.initials: H
authors.lastname: Xu
authors.affiliation: TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University , Tianjin 300072, PR China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, PR China.
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.affiliation: State Key Laboratory for Oxo Synthesis & Selective Oxidation and National Engineering Research Center for Fine Petrochemical Intermediates, Lanzhou Institute of Chemical Physics , CAS, Lanzhou 730000, PR China.
authors.forename: Yingpu
authors.initials: Y
authors.lastname: Bi
authors.affiliation: TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University , Tianjin 300072, PR China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, PR China.
authors.forename: Yuanfang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University , Tianjin 300072, PR China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, PR China.|Key Lab of Advanced Ceramics and Machining Technology, Ministry of Education , Tianjin 300072, PR China.|International Center for Materials Nanoarchitectonics (WPI-MANA) and Environmental Remediation Materials Unit, National Institute for Materials Science (NIMS) , Tsukuba 305-0047, Japan.
authors.forename: Jinhua
authors.initials: J
authors.lastname: Ye