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

94 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

Access to Document

10.1016/j.apcatb.2009.11.015

Cite this

@article{a460b284b99f4211a7f65029a4f69303,

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

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.",

keywords = "Nanostructure, Photocatalyst, Promotional effect, Sonochemistry",

author = "Yoshiteru Mizukoshi and Kazuhisa Sato and Konno, {Toyohiko J.} and Naoya Masahashi",

note = "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.",

year = "2010",

month = feb,

day = "10",

doi = "10.1016/j.apcatb.2009.11.015",

language = "English",

volume = "94",

pages = "248--253",

journal = "Applied Catalysis B: Environmental",

issn = "0926-3373",

publisher = "Elsevier",

number = "3-4",

}

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

UR - http://www.scopus.com/inward/record.url?scp=74049090867&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=74049090867&partnerID=8YFLogxK

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 -