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.
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页码：3067 / 3069
页数：3
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