Dependence of photocatalytic activities upon the structures of Au/Pd bimetallic nanoparticles immobilized on TiO2 surface

Yoshiteru Mizukoshi; Kazuhisa Sato; Toyohiko J. Konno; Naoya Masahashi

doi:10.1016/j.apcatb.2009.11.015

Dependence of photocatalytic activities upon the structures of Au/Pd bimetallic nanoparticles immobilized on TiO₂ surface

Yoshiteru Mizukoshi, Kazuhisa Sato, Toyohiko J. Konno, Naoya Masahashi

Research output: Contribution to journal › Article › peer-review

89 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	248-253
Number of pages	6
Journal	Applied Catalysis B: Environmental
Volume	94
Issue number	3-4
DOIs	https://doi.org/10.1016/j.apcatb.2009.11.015
Publication status	Published - 2010 Feb 10

Keywords

Nanostructure
Photocatalyst
Promotional effect
Sonochemistry

ASJC Scopus subject areas

Catalysis
Environmental Science(all)
Process Chemistry and Technology

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abstract = "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.",

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AU - Masahashi, Naoya

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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.

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