Surface spectroscopic study of carbon monoxide adsorption on nanoscale nickel colloids prepared from a zerovalent organometallic precursor

被引：55

作者：

deCaro, D ^{[1
]}

Bradley, JS ^{[1
]}

机构：

[1] MAX PLANCK INST KOHLENFORSCH, D-45470 MULHEIM, GERMANY

来源：

LANGMUIR | 1997年 / 13卷 / 12期

关键词：

D O I：

10.1021/la9620824

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Solutions of bis(cyclooctadiene)nickel react in the presence of polyvinylpyrrolidone in dichloromethane to give stable colloidal suspensions of nickel with a mean particle size of 20 Angstrom (10 wt % Ni/PVP) and 30 Angstrom (15 wt % Ni/PVP). The PVP-stabilized metal particles in organic suspension adsorb CO in both bridged and linear geometries, Spectra obtained at partial coverages of CO show a coverage dependent frequency shift, which is interpreted in terms of vibrational coupling between adsorbed CO molecules, consistent with an ordered surface for the colloidal nickel particles.

引用

页码：3067 / 3069

页数：3

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