Premium
Perovskite Oxide Nanosheets with Tunable Band‐Edge Potentials and High Photocatalytic Hydrogen‐Evolution Activity
Author(s) -
Maeda Kazuhiko,
Eguchi Miharu,
Oshima Takayoshi
Publication year - 2014
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.201408441
Subject(s) - nanosheet , photocatalysis , perovskite (structure) , materials science , oxide , band gap , methanol , quantum yield , yield (engineering) , irradiation , chemical engineering , enhanced data rates for gsm evolution , water splitting , hydrogen , nanotechnology , chemistry , catalysis , optoelectronics , optics , composite material , organic chemistry , metallurgy , physics , telecommunications , computer science , nuclear physics , engineering , fluorescence
Perovskite nanosheets of HCa 2− x Sr x Nb 3 O 10 and HCa 2 Nb 3− y Ta y O 10 with controlled band‐edge potentials were prepared. They worked as highly efficient heterogeneous photocatalysts for H 2 evolution from a water/methanol mixture under band‐gap irradiation. The activity was found to depend on the composition. The highest activity was obtained with HCa 2 Nb 2 TaO 10 nanosheets, recording an apparent quantum yield of approximately 80 % at 300 nm, which is the highest value for a nanosheet‐based photocatalyst reported to date.