Decomposition method of water

Abstract

Abstract PURPOSE:To decompose water with a high efficiency, by fixing a sensitizer of an organic dyestuff or metallic complex excitable by the light of a lower energy side than the light required for exciting a semiconductor, on one side of a plate or filmlike metallic catalyst film consisting of a composite material of the metal with the semiconductor excitable by light in the visible or ultraviolet light region thereby said sensitizer is fixed the side where said metallic catalyst film is not formed. CONSTITUTION:A plate or filmlike catalyst film 3 consisting of a semiconductor 7 excitable by the light in the visible or ultraviolet light region or a composite material prepared by joining one or two or more among Pt, Pd, Rh, Ru or Ni to one side of the semiconductor 7 is prepared, and a sensitizer 6 of an organic dyestuff or metallic complex, excitable by the light of a lower energy side than the light required for exciting the semiconductor 7 is fixed on one side having no catalyst film to form a decomposition film 3. The resultant decomposition film 3 is dipped in water, and the side of the sensitizer 6 is irradiated with light 1 to form O2 gas. H2 gas is then produced on the other side to separate and collect the O2 gas and H2 gas separately on both sides of the decomposition film 3.

Inventors

• 👤 Hiroshi Nakanishi
• 👤 博 中西

Bibliographic Details