Layered Perovskite Oxychloride Bi4NbO8Cl: A Stable Visible Light Responsive Photocatalyst for Water Splitting
- 15 February 2016
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 138 (7), 2082-2085
- https://doi.org/10.1021/jacs.5b11191
Abstract
Mixed anion compounds are expected to be a photocatalyst for visible light-induced water splitting, but the available materials have been almost limited to oxynitrides. Here, we show that an oxychrolide Bi4NbO8Cl, a single layer Sillen–Aurivillius perovskite, is a stable and efficient O2-evolving photocatalyst under visible light, enabling a Z-scheme overall water splitting by coupling with a H2-evolving photocatalyst (Rh-doped SrTiO3). It is found that the valence band maximum of Bi4NbO8Cl is unusually high owing to highly dispersive O-2p orbitals (not Cl-3p orbitals), affording the narrow band gap and possibly the stability against water oxidation. This study suggests that a family of Sillen–Aurivillius perovskite oxyhalides is a promising system to allow a versatile band level tuning for establishing efficient and stable water-splitting under visible light.Keywords
Funding Information
- Core Research for Evolutional Science and Technology, Japan Science and Technology Agency
This publication has 32 references indexed in Scilit:
- Fabrication of an Efficient BaTaO2N Photoanode Harvesting a Wide Range of Visible Light for Water SplittingJournal of the American Chemical Society, 2013
- Photoelectrochemical properties of LaTiO2N electrodes prepared by particle transfer for sunlight-driven water splittingChemical Science, 2012
- SrNbO2N as a Water-Splitting Photoanode with a Wide Visible-Light Absorption BandJournal of the American Chemical Society, 2011
- Recent progress on photocatalytic and photoelectrochemical water splitting under visible light irradiationJournal of Photochemistry and Photobiology C: Photochemistry Reviews, 2010
- Facile Fabrication of an Efficient Oxynitride TaON Photoanode for Overall Water Splitting into H2 and O2 under Visible Light IrradiationJournal of the American Chemical Society, 2010
- Heterogeneous photocatalyst materials for water splittingChemical Society Reviews, 2008
- Inorganic Materials as Catalysts for Photochemical Splitting of WaterChemistry of Materials, 2007
- Hydrogen Production by Molecular PhotocatalysisChemical Reviews, 2007
- New Non-Oxide Photocatalysts Designed for Overall Water Splitting under Visible LightThe Journal of Physical Chemistry C, 2007
- Photocatalyst releasing hydrogen from waterNature, 2006