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 language | English |
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Pages (from-to) | 528-532 |
Number of pages | 5 |
Journal | Chemical Physics Letters |
Volume | 429 |
Issue number | 4-6 |
DOIs | |
Publication status | Published - 2006 Oct 5 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry