Catalytic activities of sonochemically prepared Au-core/Pd-shell-structured bimetallic nanoparticles immobilised on TiO2 and its dependence on Pd-shell thickness

Yoshiteru Mizukoshi, Kazuhisa Sato, Junichiro Kugai, Takao A. Yamamoto, Toyohiko J. Konno, Naoya Masahashi

研究成果: Article

4 引用 (Scopus)

抜粋

Catalytic activities of sonochemically prepared Au-core/Pd-shell-structured bimetallic nanoparticles (NPs) immobilised on TiO2 were evaluated. Comparing with the mixture of monometallic Au and Pd NPs on TiO2, core/shell-immobilised catalysts exhibited higher activities for the partial reduction of nitrobenzene (NB) to aniline (AN), suggesting that the synergistic effect originating from the core/shell structure enhanced the catalytic activities. In the case of high Au/Pd ratios, where the Pd-shell thickness was calculated to be 0.5 nm or lower, infrared spectroscopic measurements of adsorbed CO showed that the Au cores were successfully covered with Pd shells. It was found that a thin Pd shell of one layer or two layers of Pd atoms effectively catalysed the reduction of NB under ambient temperature, whereas the formation of AN was not confirmed on monometallic Au NP-immobilised catalysts.

元の言語English
ページ(範囲)235-247
ページ数13
ジャーナルJournal of Experimental Nanoscience
10
発行部数3
DOI
出版物ステータスPublished - 2015 2 15

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering
  • Materials Science(all)

フィンガープリント Catalytic activities of sonochemically prepared Au-core/Pd-shell-structured bimetallic nanoparticles immobilised on TiO<sub>2</sub> and its dependence on Pd-shell thickness' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用