Modified Ta3N5 powder as a photocatalyst for O2 evolution in a two-step water splitting system with an iodate/iodide shuttle redox mediator under visible light

Modification of tantalum nitride (Ta(3)N(5)), which has a band gap of 2.1 eV, with nanoparticulate iridium (Ir) and rutile titania (R-TiO(2)) achieved functionality as an O(2) evolution photocatalyst in a two-step water-splitting system with an IO(3)(-)/I(-) shuttle redox mediator under visible ligh...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 26(2010), 12 vom: 15. Juni, Seite 9161-5
1. Verfasser: Tabata, Masashi (VerfasserIn)
Weitere Verfasser: Maeda, Kazuhiko, Higashi, Masanobu, Lu, Daling, Takata, Tsuyoshi, Abe, Ryu, Domen, Kazunari
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2010
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a Modification of tantalum nitride (Ta(3)N(5)), which has a band gap of 2.1 eV, with nanoparticulate iridium (Ir) and rutile titania (R-TiO(2)) achieved functionality as an O(2) evolution photocatalyst in a two-step water-splitting system with an IO(3)(-)/I(-) shuttle redox mediator under visible light (lambda > 420 nm) in combination with a Pt/ZrO(2)/TaON H(2) evolution photocatalyst. The loaded Ir nanoparticles acted as active sites to reduce IO(3)(-) to I(-), while the R-TiO(2) modifier suppressed the adsorption of I(-) on Ta(3)N(5), allowing Ta(3)N(5) to evolve O(2) in the two-step water-splitting system 
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700 1 |a Maeda, Kazuhiko  |e verfasserin  |4 aut 
700 1 |a Higashi, Masanobu  |e verfasserin  |4 aut 
700 1 |a Lu, Daling  |e verfasserin  |4 aut 
700 1 |a Takata, Tsuyoshi  |e verfasserin  |4 aut 
700 1 |a Abe, Ryu  |e verfasserin  |4 aut 
700 1 |a Domen, Kazunari  |e verfasserin  |4 aut 
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