title: Intercalation of highly dispersed metal nanoclusters into a layered metal oxide for photocatalytic overall water splitting.
abstract: Metal nanoclusters (involving metals such as platinum) with a diameter smaller than 1 nm were deposited on the interlayer nanospace of KCa2 Nb3 O10 using the electrostatic attraction between a cationic metal complex (e.g., [Pt(NH3 )4 ]Cl2 ) and a negatively charged two-dimensional Ca2 Nb3 O10 (-) sheet, without the aid of any additional reagent. The material obtained possessed eight-fold greater photocatalytic activity for water splitting into H2 and O2 under band-gap irradiation than the previously reported analog using a RuO2 promoter. This study highlighted the superior functionality of Pt nanoclusters with diameters smaller than 1 nm for photocatalytic overall water splitting. This material shows the greatest efficiency among nanosheet-based photocatalysts reported to date.
authors: Department of Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550 (Japan).
authors: Takayoshi
authors: T
authors: Oshima
authors: Daling
authors: D
authors: Lu
authors: Osamu
authors: O
authors: Ishitani
authors: Kazuhiko
authors: K
authors: Maeda
keywords: heterogeneous catalysis; nanosheets; photocatalysis; semiconductors; water splitting