Facile Fabrication of an Efficient Oxynitride TaON Photoanode for Overall Water Splitting into H2 and O2 under Visible Light Irradiation

Facile Fabrication of an Efficient Oxynitride TaON Photoanode for Overall Water Splitting into H2 and O2 under Visible Light Irradiation

The porous oxynitride TaON film electrode prepared on conducting glass (FTO) showed significantly high quantum efficiency (IPCE = ca. 76% at 400 nm at 0.6 V vs Ag/AgCl) in an aqueous Na2SO4 solution, after loading of IrO2·nH2O nanoparticles as a cocatalyst for water oxidation. Overall water splittin...

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Veröffentlicht in:Journal of the American Chemical Society 2010-09, Vol.132 (34), p.11828-11829
Hauptverfasser: Abe, Ryu, Higashi, Masanobu, Domen, Kazunari
Format: Artikel
Sprache:eng
Schlagworte:
Electrochemistry
Electrodes
Hydrogen - chemistry
Iridium - chemistry
Light
Membranes, Artificial
Oxygen - chemistry
Photochemistry
Porosity
Quantum Theory
Surface Properties
Tantalum - chemistry
Water - chemistry
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Zusammenfassung:The porous oxynitride TaON film electrode prepared on conducting glass (FTO) showed significantly high quantum efficiency (IPCE = ca. 76% at 400 nm at 0.6 V vs Ag/AgCl) in an aqueous Na2SO4 solution, after loading of IrO2·nH2O nanoparticles as a cocatalyst for water oxidation. Overall water splitting into H2 and O2 under visible light was demonstrated using an IrO2·nH2O-loaded TaON photoanode combined with a Pt electrode under an externally applied bias (0.6−1 V).
ISSN:0002-7863
1520-5126
DOI:10.1021/ja1016552