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Second harmonic generation study on electrochemical deposition of palladium on a polycrystalline gold electrode

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Title: Second harmonic generation study on electrochemical deposition of palladium on a polycrystalline gold electrode
Authors: Awatani, Tadashi Browse this author
Yagi, Ichizo Browse this author
Noguchi, Hidenori Browse this author
Uosaki, Kohei Browse this author
Keywords: Second harmonic generation
Electrochemical methods
Issue Date: 3-May-2002
Publisher: Elsevier
Journal Title: Journal of Electroanalytical Chemistry
Volume: 524-525
Issue: 1-2
Start Page: 184
End Page: 193
Publisher DOI: 10.1016/S0022-0728(02)00647-2
Abstract: Electrochemical deposition (electrodeposition) and dissolution processes of Pd on a polycrystalline Au electrode surface in HClO4 solution containing PdCl42− were investigated by second harmonic generation (SHG) measurements. Both 1064 nm (near-IR) and 600 nm (visible) excitations were employed to monitor the SHG behavior in situ. Under the near-IR excitation, the resulting SHG signal contained contributions from both the Pd deposit and the adsorbed PdCl42−. On the other hand, the adsorption of the PdCl42− did not affect the SHG signal under the visible excitation. The SHG signal under the visible excitation was resonantly enhanced with the first and second monolayer depositions of Pd but declined with higher Pd coverage. These results confirm the unique structure and property of an ultra-thin Pd overlayer on gold, suggested by scanning tunneling microscopy (STM), surface X-ray scattering (SXS) and electrochemical measurements at electrodeposited Pd thin layers on single crystalline gold surfaces.
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 魚崎 浩平

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