A new structure of water layer on Cu(111) electrode surface during hydrogen evolution.
A layered structure of water molecules formed on a Cu(111) electrode surface during hydrogen evolution in sulfuric acid solution was studied by surface X-ray diffraction and infrared reflection absorption methods. Water molecules in the surface layers take a closest pack-like stacking structure with nearest-neighbor oxygen-oxygen distances in intra-(0.322(5) nm) and inter-(0.275(15) nm) layers of multi-domains; the infrared spectra of the layered water on the Cu electrode surface showed the existence of free OH(OD) and hydrogen-bonded OH(OD) of water molecule.
Ito
Masatoki
M
Department of Chemistry, Faculty of Science and Technology, Keio University Kohoku-ku, Yokohama, 223-8522, Japan. masatoki@chem.keio.ac.jp
Yamazaki
Mizuho
M
D000327:Adsorption; D002412:Cations; D003300:Copper / Q000737:chemistry*; D004566:Electrodes; D006859:Hydrogen / Q000737:chemistry; D006860:Hydrogen Bonding; D008958:Models, Molecular; D010100:Oxygen / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
D002412:Cations; D014867:Water; D003300:Copper; D006859:Hydrogen; D010100:Oxygen