Characterization of stearic acid adsorption on Ni(111) surface by experimental and first-principles study approach
Characterization of stearic acid adsorption on Ni(111) surface by experimental and first-principles study approach
复制标题
DOI：
10.1063/1.3562040
复制
发表时间：
2011-04-01
影响因子：
3.2
通讯作者：
Han, X. F.
中科院分区：
文献类型：
--
作者：
Liang, S. H.;Yu, T.;Han, X. F.
长链烷酸通常形成密堆积单层膜，其中烷基链在基材上高度定向。先前的研究报道了硬脂酸在金、铝、铜、银和氧化铝上的吸附。然而，目前尚无硬脂酸对磁性金属吸附的报道。在这项工作中，通过实验和第一性原理计算研究了硬脂酸在Ni(111)表面吸附的表征。结果表明，硬脂酸通过双齿相互作用化学吸附在 Ni(111) 表面上，距离约为 1.8 埃。除此之外，我们还获得了电荷转移和磁邻近效应的结果。 (C) 2011 年美国物理研究所。 [doi:10.1063/1.3562040]
Long-chain alkanoic acids usually form close-packed monolayer films with alkyl chains highly oriented on substrates. Previous studies have reported the adsorption of stearic acid on gold, aluminum, copper, silver, and aluminum oxide. However, there are no reports of stearic acid adsorption on magnetic metals. In this work, the characterization of stearic acid adsorbed on Ni(111) surface has been studied experimentally and with first-principles calculation. The results suggest that the stearic acid is chemically adsorbed on the Ni(111) surface via a bidentate interaction with a distance of about 1.8 angstrom. Besides this, we have also obtained results for the charge transfer and magnetic proximity effect. (C) 2011 American Institute of Physics. [doi:10.1063/1.3562040]