Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >
Potential-dependent structure of the interfacial water on the gold electrode
Title: | Potential-dependent structure of the interfacial water on the gold electrode |
Authors: | Nihonyanagia, Satoshi Browse this author | Yea, Shen Browse this author →KAKEN DB | Uosaki, Kohei Browse this author | Dreesen, Laurrent Browse this author | Humbert, Christphe Browse this author | Thiry, Paul Browse this author | Peremans, Andre Browse this author |
Keywords: | Sum frequency generation | Electrochemical methods | Surface structure, morphology, roughness, and topography | Water | Metal–electrolyte interfaces |
Issue Date: | 1-Dec-2004 |
Publisher: | Elsevier |
Journal Title: | Surface Science |
Volume: | 573 |
Issue: | 1 |
Start Page: | 11 |
End Page: | 16 |
Publisher DOI: | 10.1016/j.susc.2004.04.059 |
Abstract: | Doubly tunable sum frequency generation (SFG) spectra demonstrate that the water molecules at gold/electrolyte interface change their orientation with applied potential. At negative potentials, water molecules in the double layer align with their oxygen atom pointing to the solution. As potential became positive to be close to the potential of zero charge (PZC), the SFG signal decreased, suggesting the OH groups of the water molecule are either in random orientation or parallel to the electrode. As potential became more positive than the PZC, the SFG signal increased again with the oxygen-up orientation as same as in the negative potential region, indicating that water molecules interact with the adsorbed sulfate anions. The peak position of the SFG spectra indicates a relatively disordered state of water molecules at the gold electrode surface, in contrast to the previously observed ice-like structure of water at electrolyte/oxide interfaces. |
Relation: | http://www.sciencedirect.com/science/journal/00396028 |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/20569 |
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
|