Potential-dependent structure of the interfacial water on the gold electrode

Study of adsorbed water on Pt during methanol oxidation by ATR-SEIRAS (surface-enhanced infrared absorption spectroscopy)

“…The m(OH) bands of adsorbed water on gold electrodes have been observed by ATR-SEIRAS in 0.5 M HClO 4 [18], in 0.1 M H 2 SO 4 [30,31], in HClO 4 containing 1 mM KX (X = F, Cl, Br or I) [32] and by sum frequency generation (SFG) spectroscopy in 10 mM H 2 SO 4 [33]. A commonly observed m(OH) band around 3500 cm À1 at potentials below ca.…”

Soft X-ray Absorption Spectroscopy of Liquids for Understanding Chemical Processes in Solution

“…For understanding the mechanism of electrochemical reaction, it is necessary to study local structures of electrolytes, including electric double layers at different potentials. Previously, solidliquid interfaces at electrodes have been investigated by sum frequency generation 90 and surface-enhanced IR 91 and Raman spectroscopy. 92 XAS in the hard X-ray region has been widely applied to electrochemical reaction to investigate local structures of electrolyte metal ions since it is not necessary to prepare a thin liquid layer due to the high transmittance of hard X-rays.…”

Development and application of in situ/operando soft X-ray transmission cells to aqueous solutions and catalytic and electrochemical reactions

“…The structures of solvent water molecules at different potentials have been studied by FT-IR [209,210], sum frequency generation [211], surface-enhanced Raman [212], and surface-enhanced IR spectroscopies [213]. The orientation of water molecules at the first layers of Ag(1 1 1) electrodes is changed at different potentials in 0.1 M NaF as investigated by the X-ray scattering [214].…”