Size effect on the catalysis of gold clusters dispersed in water for aerobic oxidation of alcohol

Hironori Tsunoyama, Hidehiro Sakurai, Tatsuya Tsukuda

研究成果: Article査読

181 被引用数 (Scopus)

抄録

We prepared a set of nearly monodisperse gold clusters ranging from 1.3 to 10 nm by a seed-mediated growth in the presence of poly(N-vinyl-2-pyrrolidone) (PVP). The seed clusters with a diameter of 1.3 ± 0.3 nm were prepared by reducing AuCl4- with NaBH4 in a low-temperature aqueous solution of PVP. Subsequent reduction of more AuCl4- by Na2SO3 in the presence of the seed clusters yielded a series of larger Au:PVP clusters. Catalytic activities of the Au:PVP clusters for aerobic oxidation of p-hydroxybenzyl alcohol increased with decrease in the core size. The size dependence is discussed in light of the electronic structures of the cores probed by optical spectroscopy.

本文言語English
ページ(範囲)528-532
ページ数5
ジャーナルChemical Physics Letters
429
4-6
DOI
出版ステータスPublished - 2006 10 5
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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