Scanning Tunneling Microscopy and Near Edge X-ray Absorption Fine Structure Studies of Adsorption of Trans-2-butene on Pd(110)
Scanning Tunneling Microscopy and Near Edge X-ray Absorption Fine Structure Studies of Adsorption of Trans-2-butene on Pd(110)
复制标题
扫描隧道显微镜和近边X射线吸收反式2-丁烯在Pd(110)上吸附的精细结构研究
DOI：
10.1143/jjap.41.4911
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
K. Domen
中科院分区：
文献类型：
--
作者：
S. Katano;Yousoo Kim;M. Furukawa;H. Ogasawara;T. Komeda;H. Kato;A. Nilsson;M. Kawai;K. Domen
用扫描隧道显微镜（STM）和近边X射线吸收精细结构（NEXAFS）研究了反式-2-丁烯在Pd（110）表面的化学吸附。原子分辨的STM图像表明，反式-2-丁烯出现作为一个哑铃形的突起和C=C键是在衬底原子的顶部网站。随着反式-2-丁烯覆盖度的增加，在0.1 ML处形成短程（3×1）-1D有序结构，在饱和覆盖度处主要形成c（4×2）结构。NEXAFS实验揭示了反式-2-丁烯在Pd（110）上的吸附结构，在低覆盖度区域，两个甲基连接的方向平行于[001]，在高覆盖度区域，C=C双键平行于[110]。
The chemisorption of trans-2-butene on Pd(110) has been investigated by scanning tunneling microscopy (STM) and near-edge X-ray absorption fine structure (NEXAFS) study. Atomically resolved STM images show that the trans-2-butene appears as a dumbbell-shaped protrusion and the C=C bond is at the on-top site of the substrate atom. With increasing the coverage of trans-2-butene, a short-range (3×1)-1D ordered structure is formed at 0.1 ML and a c(4×2) structure is dominantly formed at saturation coverage. NEXAFS experiments revealed the adsorption structure of trans-2-butene on Pd(110), where the direction in which the two methyl groups are connected is parallel to [001] at low coverage and the C=C double bond is parallel to [110] in high coverage regions.