Cu2O as a photocatalyst for overall water splitting under visible light irradiation

(Note: The full text of this document is currently only available in the PDF Version )

Michikazu Hara, Takeshi Kondo, Mutsuko Komoda, Sigeru Ikeda, Junko N. Kondo, Kazunari Domen, Michikazu Hara, Kiyoaki Shinohara and Akira Tanaka


Photocatalytic decomposition of water into H2 and O2 on Cu2O under visible light irradiation is investigated; the photocatalytic water splitting on Cu2O powder proceeds without any noticeable decrease in the activity for more than 1900 h.


  1. D. Duonghong, E. Borgarello and M. Graetzel, J. Am. Chem. Soc., 1981, 103, 4685 CrossRef CAS.
  2. K. Domen, S. Naito, T. Onishi, K. Tamaru and M. Soma, J. Phys. Chem., 1982, 86, 3657 CrossRef CAS.
  3. K. Domen, A. Kudo, A. Shinozaki, A. Tanaka, K. Maruya and T. Onishi, J. Chem. Soc., Chem. Commun., 1986, 356 RSC.
  4. Y. Inoue, T. Kubokawa and K. Sato, J. Chem. Soc., Chem. Commun., 1990, 1298 RSC.
  5. K. Sayama and H. Arakawa, J. Chem. Soc., Chem. Commun., 1992, 150 RSC.
  6. H. Gerischer, J. Electroanal. Chem., 1977, 82, 133 CrossRef CAS.
  7. C. Kittel, in Introduction to Solid State Physics, 5th edn., Wiley, New York, 1976, p. 341 Search PubMed.
  8. P. W. Baumeister, Phys. Rev., 1961, 121, 359 CrossRef CAS.
  9. G. Nagasubramanian, A. S. Gioda and A. J. Bard, J. Electrochemcal Soc., 1981, 128, 2158 Search PubMed.
  10. H. Gerischer, Ber. Bunsenges Phys. Chem., 1971, 75, 1237 Search PubMed.
  11. R. V. Siriwardane and J. A. Poston, Appl. Surf. Sci., 1993, 68, 65 CrossRef CAS.
  12. K. Domen, S. Naito, M. Soma, T. Onishi and K. Tamaru, J. Chem. Soc., Faraday Trans. 1, 1982, 78, 845 RSC.
  13. H. Dünwald and C. Wagner, Z. Phys. Chem. B, 1933, 40, 197 Search PubMed.
  14. B. J. Wood, H. Wise and R. S. Yolles, J. Catal., 1969, 15, 355 CrossRef CAS.
  15. Th. Wokenstein and IV. Karpenko, J. Appl. Phys., 1962, 33, 460.
  16. A. Pabst, Am. Mineral., 1946, 31, 539 CAS.
  17. R. D. Shannon, D. B. Rogers and C. T. Prewitt, Inorg. Chem., 1971, 10, 713 CrossRef CAS.
  18. C. Prewitt, R. D. Shanonn and D. B. Rogers, Inorg. Chem., 1971, 10, 719 CrossRef.