Title of article :
Size effect on the catalysis of gold clusters dispersed in water for aerobic oxidation of alcohol
Author/Authors :
Tsunoyama، نويسنده , , Hironori and Sakurai، نويسنده , , Hidehiro and Tsukuda، نويسنده , , Tatsuya، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
5
From page :
528
To page :
532
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 AuCl 4 - with NaBH4 in a low-temperature aqueous solution of PVP. Subsequent reduction of more AuCl 4 - 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.
Journal title :
Chemical Physics Letters
Serial Year :
2006
Journal title :
Chemical Physics Letters
Record number :
1920344
Link To Document :
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