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Journal Article

Electrochemical SHG at a Ag(111) single-crystal electrode using the hanging meniscus configuration

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Danckwerts,  Matthias
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Pettinger,  Bruno
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Doblhofer,  Karl
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

Danckwerts, M., Savinova, E. R., Pettinger, B., & Doblhofer, K. (2002). Electrochemical SHG at a Ag(111) single-crystal electrode using the hanging meniscus configuration. Applied Physics B, 74(7-8), 635-639. doi:10.1007/s00340-002-0920-x.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-14B3-5
Abstract
We combine in situ electrochemical second-harmonic generation (SHG) with voltammetry measurements using the hanging meniscus configuration. This setup is used to investigate the interface between a Ag (111) electrode and an alkaline electrolyte. The study offers a new in situ insight into the electrochemical processes at the Ag (111) electrode during OH adsorption and subsequent oxidation. The behavior of SHG isotropic and anisotropic contributions as a function of potential is discussed and related to the interfacial electric field.,Comparison of the results with previous investigations of the Ag underpotential oxidation in alkaline solutions shows that submonolayer oxidation is followed by bulk oxidation.