Abstract
Recent progress in photocatalytic decomposition of water to H2 and O2 using simple oxide semiconductor catalysts has been reviewed. Addition of Na2CO3 to Pt/TiO2 suspension in water enhanced the stoichiometric decomposition significantly. This Na2CO3 addition method has been proved to be very useful to accelerate water splitting over various kinds of oxide semiconductor photocatalysts. The role of CO3 2− anion on the acceleration of water splitting was clarified. Finally, it was firstly demonstrated in the world that water was decomposed efficiently and stoichiometrically to H2 and O2 using a 3 wt% NiOx/TiO2 photocatalyst under real solar light irradiation in Tsukuba, Japan by this Na2CO3 addition method.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. Fujishima and K. Honda, Nature 235 (1972) 37.
M. Graetzel, Acc. Chem. Res. 14 (1981) 376.
A. Mills and G. Porter, J. Chem. Soc. Faraday Trans. 1 (78) (1982) 3659.
K. Sayama and H. Arakawa, J. Chem. Soc. Chem. Commun. (1992) 150.
K. Sayama and H. Arakawa, Chem. Lett. (1992) 253.
K. Sayama and H. Arakawa, J. Phys. Chem. 97 (1993) 531.
K. Sayama and H. Arakawa, J. Photochem. Photobiol. A: Chem. 77 (1994) 243.
K. Sayama and H. Arakawa, J. Photochem. Photobiol. A: Chem. 94 (1996) 67.
H. Arakawa and K. Sayama, Res. Chem. Intermed. 26 (2000) 145.
K. Sayama and H. Arakawa, J. Chem. Soc. Farady Trans. 93 (1997) 1647.
G. Munuera, A.R. Gonzalez-Elipe, A. Fernandez, P. Malet and J.P. Espinos, J. Chem. Soc. Farady Trans. 1 (85) (1989) 1279.
T.E. Eriksen and J. Lind, Radiat. Phys. Chem. 26 (1981) 197.
D.P. Jones and W.P. Griffith, J. Chem. Soc. Dalton Trans. 76 (1980) 2526.
A. Kudo, K. Domen, K. Maruya and T. Onishi, Chem. Phys. Lett. 133 (1989) 517.
J. Lehn, J. Sauvage, R. Ziessel and L. Hilaire, Isr. J. Chem. 22 (1982) 168.
Y. Inoue, T. Kubokawa and K. Sato, J. Phys. Chem. 95 (1992) 4059.
Y. Inoue, T. Niiyama, Y. Asai and K. Sato, J. Chem. Soc. Chem. Commun. (1992) 579.
A. Kudo, A. Tanaka, K. Domen, K. Maruya, K. Aika and T. Onishi, J. Catal. 111 (1988) 67.
K. Sayama, A. Tanaka, K. Domen, K. Maruya and T. Onishi, J. Phys. Chem. 95 (1991) 1345.
K. Sayama, K. Yase, H. Arakawa, K. Asakura, A. Tanaka, K. Domen and T. Onishi, J. Photochem. Photobiol. A: Chem. 114 (1998) 125.
Rights and permissions
About this article
Cite this article
Arakawa, H., Sayama, K. Solar hydrogen production. Significant effect of Na2CO3 addition on water splitting using simple oxide semiconductor photocatalysts. Catalysis Surveys from Asia 4, 75–80 (2000). https://doi.org/10.1023/A:1019096323694
Issue Date:
DOI: https://doi.org/10.1023/A:1019096323694