Visible-light-driven photocatalytic behavior of tantalum-oxynitride and nitride

Authors: Takata, T.; Hitoki, G.; Kondo, J.N.; Hara, M.; Kobayashi, H.; Domen, K.

Source: Research on Chemical Intermediates, Volume 33, Numbers 1-2, 2007 , pp. 13-25(13)

Publisher: VSP, an imprint of Brill

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By this author: Takata, T. ; Hitoki, G. ; Kondo, J.N. ; Hara, M. ; Kobayashi, H. ; Domen, K.

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Abstract:

Tantalum oxynitride (TaON) and tantalum nitride (Ta₃N₅) are investigated in detail as visible-light-responsive photocatalysts. It is found that TaON and Ta₃N₅ evolve H₂ or O₂ via band-gap excitation in the presence of a sacrificial electron donor or acceptor, respectively. These materials exhibit high stability against photo-corrosion under the reaction conditions for H₂ and O₂ evolution. Structural and physical properties of these photocatalysts were also investigated in detail.

Keywords: PHOTOCATALYST; TANTALUM (OXY)NITRIDE; WATER SPLITTING

Document Type: Research article

DOI: 10.1163/156856707779160898