Premium
Intercalation of Highly Dispersed Metal Nanoclusters into a Layered Metal Oxide for Photocatalytic Overall Water Splitting
Author(s) -
Oshima Takayoshi,
Lu Daling,
Ishitani Osamu,
Maeda Kazuhiko
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201411494
Subject(s) - nanoclusters , photocatalysis , nanosheet , materials science , metal , cationic polymerization , water splitting , intercalation (chemistry) , oxide , chemical engineering , reagent , nanotechnology , inorganic chemistry , catalysis , chemistry , metallurgy , organic chemistry , polymer chemistry , engineering
Metal nanoclusters (involving metals such as platinum) with a diameter smaller than 1 nm were deposited on the interlayer nanospace of KCa 2 Nb 3 O 10 using the electrostatic attraction between a cationic metal complex (e.g., [Pt(NH 3 ) 4 ]Cl 2 ) and a negatively charged two‐dimensional Ca 2 Nb 3 O 10 − sheet, without the aid of any additional reagent. The material obtained possessed eight‐fold greater photocatalytic activity for water splitting into H 2 and O 2 under band‐gap irradiation than the previously reported analog using a RuO 2 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.