Journal ArticleDOI
Potential-Dependent Reorientation of Water Molecules at an Electrode/Electrolyte Interface Studied by Surface-Enhanced Infrared Absorption Spectroscopy
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In this paper, the structure and orientation of water molecules at a highly ordered Au(111) electrode surface in perchloric acid have been investigated in-situ as a function of applied potential by means of surface-enhanced infrared absorption spectroscopy.Abstract:
The structure and orientation of water molecules at a highly ordered Au(111) electrode surface in perchloric acid have been investigated in-situ as a function of applied potential by means of surface-enhanced infrared absorption spectroscopy. This newly developed infrared spectroscopy technique enables the observation of the electrode/electrolyte interface at a very high sensitivity without interference from the bulk solution. The spectrum of the interfacial water significantly differs from that of bulk water and drastically changes in peak frequencies and band widths around the potential of zero charge (pzc) of the electrode and at about 0.3 V positive from the pzc. The interfacial water molecules are weakly hydrogen-bonded at potentials below the pzc and form a strongly hydrogen-bonded ice-like structure at potentials slightly above the pzc. The ice-like structure is broken at more positive potentials due to the specific adsorption of perchlorate ion, where one OH moiety of water is non-hydrogen-bonded ...read more
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The Interaction of Water with Solid Surfaces: Fundamental Aspects Revisited
TL;DR: A review of the fundamental interactions of water with solid surfaces can be found in this paper, where the authors assimilated the results of the TM review with those covered by the authors to provide a current picture of water interactions on solid surfaces, such as how water adsorbs, what are the chemical and electrostatic forces that constitute the adsorbed layer, how is water thermally or non-thermally activated and how do coadsorbates influence these properties of water.
Journal ArticleDOI
Self-consistent description of a metal–water interface by the Kohn–Sham density functional theory and the three-dimensional reference interaction site model
Andriy Kovalenko,Fumio Hirata +1 more
TL;DR: In this paper, a self-consistent description of an interface between a metal and a molecular liquid by combination of the density functional theory in the Kohn-Sham formulation for the electronic structure, and the three-dimensional generalization of the reference interaction site model (3D RISM) for the classical site distribution profiles of liquid is developed.
Journal ArticleDOI
Dynamic Processes in Electrochemical Reactions Studied by Surface-Enhanced Infrared Absorption Spectroscopy (SEIRAS)
TL;DR: The surface-enhanced infrared absorption (SEIRA) as mentioned in this paper is a surface analytical tool that is very useful for in situ studies of electrode/electrolyte interfaces.
Journal ArticleDOI
Liquid interfaces: A study by sum-frequency vibrational spectroscopy
Paulo B. Miranda,Y. R. Shen +1 more
TL;DR: The sum-frequency generation (SFG) technique has been shown to be the only technique available that can provide detailed information about a liquid interface at the molecular level as mentioned in this paper, which has been proven to be a most powerful analytical tool for liquid interfaces.
Journal ArticleDOI
The effect of the particle size on the kinetics of CO electrooxidation on high surface area Pt catalysts
Matthias Arenz,Matthias Arenz,Karl Johann Jakob Mayrhofer,Vojislav R. Stamenkovic,Berislav Blizanac,Tada Tomoyuki,Philip N. Ross,Nenad M. Markovic +7 more
TL;DR: It is suggested that the catalytic activity for CO adlayer oxidation is predominantly influenced by the ability of the surface to dissociate water and to form OH(ad) on defect sites rather than by CO energetics.
References
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Journal ArticleDOI
The interaction of water with solid surfaces: Fundamental aspects
TL;DR: In this paper, the authors compare and discuss recent experimental and theoretical results in the field of H2O-solid interactions, and emphasize studies of low (submonolayer) coverages of water on well-characterized, single-crystal surfaces of metals, semiconductors and oxides.
Journal ArticleDOI
The structure of liquid water at an extended hydrophobic surface
TL;DR: In this paper, a detailed analysis of the structural properties of the liquid farther from the surface can be understood as effects imposed by this surface structure, and the results show that the hydration structure of large hydrophobic surfaces can be very different from that of small hydrophilic molecules.
Book
Surface Electrochemistry: A Molecular Level Approach
TL;DR: In this paper, the Interphasial Structure of Electrode Kinetics is discussed and the Electrochemistry of Cleaner Environments is discussed, as well as some Electrical Aspects of the Stability of Materials.
Journal ArticleDOI
Voltage-dependent ordering of water molecules at an electrode–electrolyte interface
Michael F. Toney,Jason N. Howard,Jason N. Howard,Jocelyn Richer,Jocelyn Richer,Gary L. Borges,Joseph G. Gordon,Owen R. Melroy,David G. Wiesler,Dennis Yee,Larry B. Sorensen +10 more
TL;DR: In this paper, the authors measured the water density profile perpendicular to a silver surface at two applied voltages and found that the water molecules are ordered in layers extending about three molecular diameters from the electrode, and that the spacing between the electrode and first water layer indicates an oxygen-up (oxygen-down) average orientation for negative (positive) charge.
Journal ArticleDOI
Vibrational spectra of water molecules at quartz/water interfaces.
Q Du,Eric Freysz,Y. R. Shen +2 more
TL;DR: Optical sum-frequency generation was used to study OH stretch vibrations of water molecules at fused quartz-water interfaces and indicates that orientations and bond ordering of interfacial water molecules are strongly affected by electrostatic interaction and hydrogen bonding.