title: Photocatalytic reduction of CO2 over Ag/TiO2 nanocomposites prepared with a simple and rapid silver mirror method.
abstract: The photocatalytic reduction of CO2 over Ag/TiO2 composites prepared with a simple silver mirror reaction method was investigated under UV-visible irradiation in both gas-phase (CO2 + water vapor) and aqueous solution (CO2-saturated NaHCO3 solution) systems. The as-prepared Ag/TiO2 nanocomposite exhibits efficient photocatalytic activity due to the surface plasmonic resonance and electron sink effect of the Ag component, which was found to be closely related to the size and loading amount of Ag. The rapid silver method is effective at curbing the size of Ag, so photocatalytic activity can be improved. Diverse organic chemical products were detected, including mainly methane and methanol as well as a small amount of C2 and C3 species such as acetaldehyde and acetone. Possible photocatalytic mechanisms were proposed. This artificial photosynthesis process may give a prosperous route to the removal of CO2 while simultaneously converting CO2 to valuable fuels based on highly efficient photocatalysts.
authors.affiliation: National Laboratory of Solid State Microstructures, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China and Eco-materials and Renewable Energy Research Center (ERERC), Nanjing University, Nanjing 210093, P. R. China.
authors.forename: Bingcheng
authors.initials: B
authors.lastname: Yu
authors.affiliation: National Laboratory of Solid State Microstructures, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China and Eco-materials and Renewable Energy Research Center (ERERC), Nanjing University, Nanjing 210093, P. R. China and Key Laboratory of Modern Acoustics, MOE, Institute of Acoustics, Department of Physics, Nanjing University, Nanjing 210093, P. R. China. zhouyong1999@nju.edu.cn zgzou@nju.edu.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: Environmental of Remediation Materials Unit and Interantional Center for Materials Nanoarchitectures (WPI-MANA), 1-1 Namiki, Tsukuba, Ibaraki 305-004, Japan.
authors.forename: Peng
authors.initials: P
authors.lastname: Li
authors.affiliation: National Laboratory of Solid State Microstructures, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China and Eco-materials and Renewable Energy Research Center (ERERC), Nanjing University, Nanjing 210093, P. R. China.
authors.forename: Wenguang
authors.initials: W
authors.lastname: Tu
authors.affiliation: National Laboratory of Solid State Microstructures, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China and Eco-materials and Renewable Energy Research Center (ERERC), Nanjing University, Nanjing 210093, P. R. China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.affiliation: College of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 22401, P. R. China.
authors.forename: Lanqin
authors.initials: L
authors.lastname: Tang
authors.affiliation: Environmental of Remediation Materials Unit and Interantional Center for Materials Nanoarchitectures (WPI-MANA), 1-1 Namiki, Tsukuba, Ibaraki 305-004, Japan and TU-NIMS Joint Research Center, School of Material Science and, Engineering, and Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, P. R. China.
authors.forename: Jinhua
authors.initials: J
authors.lastname: Ye
authors.affiliation: National Laboratory of Solid State Microstructures, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China and Eco-materials and Renewable Energy Research Center (ERERC), Nanjing University, Nanjing 210093, P. R. China.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Zou