Letter | Published:

Electrochemical Photolysis of Water at a Semiconductor Electrode


ALTHOUGH the possibility of water photolysis has been investigated by many workers, a useful method has only now been developed. Because water is transparent to visible light it cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm (ref. 1).


  1. 1

    Coehn, A., Ber. Deutsch. Chem. Gesellschaft, 43, 880 (1910).

  2. 2

    Fujishima, A., Honda, K., and Kikuchi, S., J. Chem. Soc. Japan (Kogyo Kagaku Zasshi), 72, 108 (1969).

  3. 3

    Fujishima, A., and Honda, K., J. Chem. Soc. Japan, 74, 355 (1971).

  4. 4

    Fujishima, A., and Honda, K., J. Institute of Industrial Science, University of Tokyo (Seisan Kenkyu), 22, 478 (1970).

  5. 5

    Fujishima, A., Sugiyama, E., and Honda, K., Bull. Chem. Soc. Japan, 44, 304 (1971).

Download references

Author information

Rights and permissions

Reprints and Permissions

About this article

Further reading


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.