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 journalArticlepeer-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 languageEnglish
Pages (from-to)248-253
Number of pages6
JournalApplied Catalysis B: Environmental
Volume94
Issue number3-4
DOIs
Publication statusPublished - 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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