Get access

The Water Oxidation Bottleneck in Artificial Photosynthesis: How Can We Get Through It? An Alternative Route Involving a Two-Electron Process

Authors

  • Dr. Haruo Inoue,

    Corresponding author
    1. SORST/JST, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397 (Japan), Fax: (+81) 426-53-3416
    2. Division of Chemical Conversion of Light Energy, Center for Priority Areas, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397 (Japan)
    • SORST/JST, Tokyo Metropolitan University, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397 (Japan), Fax: (+81) 426-53-3416
    Search for more papers by this author
  • Dr. Tetsuya Shimada,

    1. Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397 (Japan)
    Search for more papers by this author
  • Youki Kou,

    1. Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397 (Japan)
    Search for more papers by this author
  • Dr. Yu Nabetani,

    1. Division of Chemical Conversion of Light Energy, Center for Priority Areas, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397 (Japan)
    Search for more papers by this author
  • Dr. Dai Masui,

    1. Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397 (Japan)
    Search for more papers by this author
  • Dr. Shinsuke Takagi,

    1. Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397 (Japan)
    Search for more papers by this author
  • Dr. Hiroshi Tachibana

    1. Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, 1-1 Minami-ohsawa, Hachiohji, Tokyo 192-0397 (Japan)
    Search for more papers by this author

Abstract

The state-of-the-art of research on artificial photosynthesis is briefly reviewed. Insights into how Nature takes electrons from water, the photon-flux density of sunlight, the time scale for the arrival of the next photon (electron–hole) at the oxygen-evolving complex, how Nature solves the photon-flux-density problem, and how we can get through the bottleneck of water oxidation are discussed. An alternate route for a two-electron process induced by one-photon excitation is postulated for getting through the bottleneck of water oxidation.

Ancillary