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首页> 外文期刊>European Physical Journal Plus >A density functional theory study on the geometrical structure and chemical reactivity of binary Au12Pt cluster
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A density functional theory study on the geometrical structure and chemical reactivity of binary Au12Pt cluster

机译:二元Au12Pt团簇的几何结构和化学反应性的密度泛函理论研究。

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An all-electron scalar relativistic calculation on the geometrical structure and reactivity of the Au12Pt cluster has been performed by using the density functional theory with the generalized gradient approximation at PW91 level. The lowest energy geometry of the Au12Pt cluster is generated by substituting a Pt atom for one gold atom of the Au-13 cluster at the highest coordinated site. Compared with pure Au13 cluster, the Au12Pt cluster is less stable and more reactive. The CO and O-2 molecules prefer to be adsorbed onto the Pt atom above the planes of the lowest energy geometries for Au12PtCO and Au12PtO2 clusters. The impurity Pt is favorable to the adsorptions and also promotes the reactivity enhancement of the CO molecule and the O-2 molecule.
机译:通过使用密度泛函理论和PW91级的广义梯度近似,对Au12Pt团簇的几何结构和反应性进行了全电子标量相对论计算。 Au12Pt团簇的最低能量几何结构是通过在最高配位位置上用一个Pt原子代替Au-13团簇的一个金原子而产生的。与纯Au13团簇相比,Au12Pt团簇不稳定且反应性更高。对于Au12PtCO和Au12PtO2团簇,CO和O-2分子更喜欢吸附在最低能量几何平面上方的Pt原子上。杂质Pt有利于吸附,并且还促进CO分子和O-2分子的反应性提高。

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