PREPARATION AND CHARACTERIZATION OF ORGANOSOLS OF MONODISPERSED NANOSCALE PALLADIUM - PARTICLE-SIZE EFFECTS IN THE BINDING GEOMETRY OF ADSORBED CARBON-MONOXIDE

被引：137

作者：

BRADLEY, JS ^{[1
]}

HILL, EW ^{[1
]}

BEHAL, S ^{[1
]}

KLEIN, C ^{[1
]}

CHAUDRET, B ^{[1
]}

DUTEIL, A ^{[1
]}

机构：

[1] CHIM COORDINAT LAB,CNRS,TOULOUSE,FRANCE

来源：

CHEMISTRY OF MATERIALS | 1992年 / 4卷 / 06期

关键词：

D O I：

10.1021/cm00024a023

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of poly(vinyl pyrrolidone) (PVP) stabilized palladium colloids was prepared by the reductive decomposition of solutions of palladium complexes in the presence of PVP. The resulting colloidal clusters had diameters of ca. 60, ca. 40, and ca. 25 angstrom (by TEM), with polydispersities of ca. 10%, and were shown by electron diffraction to be crystalline (fcc) palladium. Carbon monoxide adsorbed on the colloidal metal, both terminal and bridged CO being observed by solution infrared spectroscopy. A size dependency is observed for the bonding mode of CO, with the smallest particles giving the highest ratio of terminal CO to bridging CO and the largest particles showing only bridging CO.

引用

页码：1234 / 1239

页数：6

共 43 条

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