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Press Release

Development of a Particulate Photocatalyst Sheet to Achieve Artificial Photosynthesis

-Solar-to-Hydrogen Conversion Efficiency of 1.1% Achieved-
March  10,2016
New Energy and Industrial Technology Development Organization (NEDO)
Japan Technological Research Association of Artificial Photosynthetic Chemical Process
TOTO Ltd.

NEDO, in collaboration with the Japan Technological Research Association of Artificial Photosynthetic Chemical Process (ARPChem), the University of Tokyo, and TOTO Ltd., has developed particulate photocatalyst sheets that use solar energy to produce hydrogen from water (a form of artificial photosynthesis). The sheets are composed of two types of particulate photocatalysts and have a solar-to-hydrogen conversion efficiency of 1.1%.

The sheets are suitable for scaling-up and production cost reduction due to an extremely simple structure, providing the possibility of supplying low-cost hydrogen at a large scale.

The research results were published as an advance online publication in the U.K. scientific journal “Nature Materials”.

  • figure: A conceptual diagram of the water splitting process on the surface of the particulate photocatalyst sheets
    A conceptual diagram of the water splitting process
    on the surface of the particulate photocatalyst sheets

For more information, please contact:

NEDO Environment Department
Tel: +81-44-520-5250­
Contact persons: Hattori, Yamano

ARPChem
Tel: +81-35-809-2314­
Contact person: Nishimi

TOTO Ltd. Public Relations Department
Tel: +81-36-836-2025­
Contact persons: Kuwahara, Shibasaki