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

Hironori Tsunoyama, Hidehiro Sakurai, Tatsuya Tsukuda

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176 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)528-532
Number of pages5
JournalChemical Physics Letters
Volume429
Issue number4-6
DOIs
Publication statusPublished - 2006 Oct 5
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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