TY - JOUR
T1 - Molecule-based water-oxidation catalysts (WOCs)
T2 - Cluster-size-dependent dye-sensitized polyoxometalates for visible-light-driven O2 evolution
AU - Gao, Junkuo
AU - Cao, Shaowen
AU - Tay, Qiuling
AU - Liu, Yi
AU - Yu, Lingmin
AU - Ye, Kaiqi
AU - Mun, Peter Choon Sze
AU - Li, Yongxin
AU - Rakesh, Ganguly
AU - Loo, Say Chye Joachim
AU - Chen, Zhong
AU - Zhao, Yang
AU - Xue, Can
AU - Zhang, Qichun
PY - 2013
Y1 - 2013
N2 - From atomic level to understand the cluster-size-dependant behavior of dye-sensitized photocatalysts is very important and helpful to design new photocatalytic materials. Although the relationship between the photocatalytic behaviors and particles' size/shape has been widely investigated by theoretical scientists, the experimental evidences are much less. In this manuscript, we successfully synthesized three new ruthenium dye-sensitized polyoxometalates (POM-n, n relate to different size clusters) with different-sized POM clusters. Under visible-light illumination, all three complexes show the stable O 2 evolution with the efficient order POM-3 > POM-2 > POM-1. This cluster-size-dependent catalytic behavior could be explained by the different numbers of M = Ot (terminal oxygen) bonds in each individual cluster because it is well-known that Mo = Ot groups are the catalytically active sites for photooxidation reaction. The proposed mechanism of water oxidation for the dye-sensitized POMs is radical reaction process. This research could open up new perspectives for developing new POM-based WOCs.
AB - From atomic level to understand the cluster-size-dependant behavior of dye-sensitized photocatalysts is very important and helpful to design new photocatalytic materials. Although the relationship between the photocatalytic behaviors and particles' size/shape has been widely investigated by theoretical scientists, the experimental evidences are much less. In this manuscript, we successfully synthesized three new ruthenium dye-sensitized polyoxometalates (POM-n, n relate to different size clusters) with different-sized POM clusters. Under visible-light illumination, all three complexes show the stable O 2 evolution with the efficient order POM-3 > POM-2 > POM-1. This cluster-size-dependent catalytic behavior could be explained by the different numbers of M = Ot (terminal oxygen) bonds in each individual cluster because it is well-known that Mo = Ot groups are the catalytically active sites for photooxidation reaction. The proposed mechanism of water oxidation for the dye-sensitized POMs is radical reaction process. This research could open up new perspectives for developing new POM-based WOCs.
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U2 - 10.1038/srep01853
DO - 10.1038/srep01853
M3 - Article
AN - SCOPUS:84878661293
SN - 2045-2322
VL - 3
JO - Scientific Reports
JF - Scientific Reports
M1 - 1853
ER -