Abstract
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.
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Acknowledgments
This work was partially supported by Grants-in-Aids for Scientific Research (KAKENHI; No. 18205016) from the Ministry of Education, Culture, Sports, Science, and Technology. The synchrotron radiation experiments were performed as projects by the Japan Synchrotron Radiation Research Institute (JAERI; proposal No. 2005B0174).
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Dedicated to Professor J. O’M. Bockris on the occasion of his 85th birthday.
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Kondo, T., Tamura, K., Takakusagi, S. et al. Partial stripping of Ag atoms from silver bilayer on a Au(111) surface accompanied with the reductive desorption of hexanethiol SAM. J Solid State Electrochem 13, 1141–1145 (2009). https://doi.org/10.1007/s10008-008-0764-3
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DOI: https://doi.org/10.1007/s10008-008-0764-3