An artificial photosynthesis

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  • ABE Ryu
    Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University

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Other Title
  • 人工光合成
  • 人工光合成 : 半導体光触媒を用いた水の分解による水素製造
  • ジンコウ コウゴウセイ : ハンドウタイ ヒカリ ショクバイ オ モチイタ ミズ ノ ブンカイ ニ ヨル スイソ セイゾウ
  • Photocatalytic water splitting for solar hydrogen production
  • 半導体光触媒を用いた水の分解による水素製造

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Description

<p>In order to realize the efficient conversion of solar light, the development of water-splitting systems that can efficiently use visible light have had major challenges for many years. Recently, a new type of photocatalysis system that can split water into H2 and O2 under visible light irradiation has been developed, by mimicking the two-step photoexcitation (Z-scheme) mechanism of natural photosynthesis in green plants. In this system, the water splitting reaction is broken up into two stages: one for H2 evolution and the other for O2 evolution; these are combined by using a shuttle redox couple (Ox/Red) in the solution. The introduction of a Z-scheme mechanism reduces the energy required to drive each photocatalysis process, extending the usable wavelengths significantly from that of conventional water splitting systems.</p>

Journal

  • Oyo Buturi

    Oyo Buturi 83 (2), 112-115, 2014-02-10

    The Japan Society of Applied Physics

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