TY - JOUR
T1 - Dependence of photocatalytic activities upon the structures of Au/Pd bimetallic nanoparticles immobilized on TiO2 surface
AU - Mizukoshi, Yoshiteru
AU - Sato, Kazuhisa
AU - Konno, Toyohiko J.
AU - Masahashi, Naoya
N1 - Funding Information:
The authors wish to thank Emeritus Prof. Y. Maeda (Osaka Prefecture University) for his valuable comments and his critical reading of the manuscript. We wish to acknowledge Ms. Y. Matsuda (IMR, Tohoku University) and Mr. N. Shima (Nagasaki University) for their helpful assistances in the evaluation of the photocatalytic activities, Dr. N. Ohtsu (Kitami Institute of Technology) for XPS experiments, and Dr. S. Tanabe (Nagasaki University) for his valuable comments. One of the authors (Y.M.) acknowledges the Grant-in-Aid for Young Scientists (B) (No. 20760525 ) from Japan Society for the Promotion of Science (JSPS).
Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2010/2/10
Y1 - 2010/2/10
N2 - Bimetallic nanoparticles with a Au-core/Pd-shell structure were prepared and successfully immobilized on a TiO2 surface using sonochemical method. When immobilizing the core/shell structured bimetallic nanoparticles with a Au/Pd molar ratio of 25/75, TiO2 showed the highest activity for the photochemical H2 evolution from ethanol aqueous solution. The activities of other two types of photocatalysts with the same Au/Pd molar ratio, TiO2 immobilizing the mixture of Au and Pd monometallic nanoparticle, and TiO2 immobilizing Au/Pd random alloy nanoparticles wherein Au and Pd atoms homogeneously located, were also evaluated. The dependence of the photocatalytic activities on the nanostructures of the immobilized bimetals was confirmed.
AB - Bimetallic nanoparticles with a Au-core/Pd-shell structure were prepared and successfully immobilized on a TiO2 surface using sonochemical method. When immobilizing the core/shell structured bimetallic nanoparticles with a Au/Pd molar ratio of 25/75, TiO2 showed the highest activity for the photochemical H2 evolution from ethanol aqueous solution. The activities of other two types of photocatalysts with the same Au/Pd molar ratio, TiO2 immobilizing the mixture of Au and Pd monometallic nanoparticle, and TiO2 immobilizing Au/Pd random alloy nanoparticles wherein Au and Pd atoms homogeneously located, were also evaluated. The dependence of the photocatalytic activities on the nanostructures of the immobilized bimetals was confirmed.
KW - Nanostructure
KW - Photocatalyst
KW - Promotional effect
KW - Sonochemistry
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U2 - 10.1016/j.apcatb.2009.11.015
DO - 10.1016/j.apcatb.2009.11.015
M3 - Article
AN - SCOPUS:74049090867
VL - 94
SP - 248
EP - 253
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
IS - 3-4
ER -