Partial stripping of Ag atoms from silver bilayer on a Au(111) surface accompanied with the reductive desorption of hexanethiol SAM
Partial stripping of Ag atoms from silver bilayer on a Au(111) surface accompanied with the reductive desorption of hexanethiol SAM
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DOI：
10.1007/s10008-008-0764-3
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发表时间：
2009-01
影响因子：
2.5
通讯作者：
T. Kondo;K. Tamura;S. Takakusagi;K. Kitamura;M. Takahasi;J. Mizuki;K. Uosaki
中科院分区：
文献类型：
--
作者：
T. Kondo;K. Tamura;S. Takakusagi;K. Kitamura;M. Takahasi;J. Mizuki;K. Uosaki
用非原位扫描隧道显微镜（ex-situ scanning tunneling microscope）和原位表面X射线散射（in-situ surface X-ray scattering）研究了在Au（111）表面欠电位沉积Ag（2 ML）/Au（111））双层膜氧化吸附前后和还原脱附前后的界面结构。虽然在含有20 mM KOH和0.1 mM C6 SH的乙醇溶液中，在Ag（2 ML）/Au（111）上氧化形成C6 SH SAM后没有观察到结构变化，但当SAM还原解吸时，双层中的一些Ag原子被剥离。
The interfacial structures of Ag bilayer prepared by underpotential deposition on Au(111) (Ag(2ML)/Au(111)) were determined by ex situ scanning tunneling microscopy and in situ surface X-ray scattering measurements before and after oxidative adsorption and after reductive desorption of a self-assembled monolayer (SAM) of hexanethiol (C6SH) in alkaline ethanol solution. While no structural change was observed after oxidative formation of C6SH SAM on the Ag(2ML)/Au(111) in an ethanol solution containing 20 mM KOH and 0.1 mM C6SH, some of the Ag atoms in the bilayer were stripped when the SAM was reductively desorbed.