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Density functional study of the interaction of CO with nickel clusters
Author(s): 
Pages: 6128-6133
Year: Issue:  9
Journal: Acta Physica Sinica

Keyword:  NinCO团簇 Nin团簇 平衡结构 电子性质;
Abstract: 采用密度泛函理论对CO吸附在镍团簇表面进行了系统研究.结果表明,NinCO团簇的最低能量结构是在Nin团簇最低能量结构的基础上吸附CO生长而成,CO的吸附没有改变Nin团簇的结构;CO分子在Nin团簇表面发生的是非解离性吸附,与优化的CO键长(0.1138 nm)相比,吸附后C—O键长变长(0.1180—0.1214 nm),表明吸附后C—O键被削弱,CO分子被活化.自然键轨道分析表明,CO分子只与最近邻的Ni原子发生相互作用;CO分子与Ni原子相互作用的本质是CO分子内的杂化轨道与Ni原子3d,4s,4p轨道相互作用的结果.
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