Charge-dependent atomic-scale structures of high-index and ( 110) gold electrode surfaces as revealed by scanning tunneling microscopy

Self-promotion mechanism for CO electrooxidation on gold

“…0.1-0.2 V towards higher potentials, and its recovery is faster than in the absence of CO. 28 Finally, the Au(110) surface in perchloric acid solutions forms, at low potentials, a reconstructed structure with mixed (1 Â 2) and (1 Â 3) domains. [29][30][31] Application of potentials above 0.4-0.5 V induces a fast (nearly immediate) lifting of the reconstruction. Afterwards, the recovery of the reconstructed surface, by application of potentials below 0.0 V, is also very rapid.…”

“…Afterwards, the recovery of the reconstructed surface, by application of potentials below 0.0 V, is also very rapid. [29][30][31] In alkaline solutions, lifting of the reconstruction takes place at E 4 0.8 V, and in CO-saturated alkaline solutions, the transition takes place at higher potentials. 28…”

Underpotential Deposition on Single-Crystal Metals

“…9,45,46 Later, detailed STM observations were conducted not only on low-index surfaces, [47][48][49] but also on high-index surfaces. 50,51 The effects of anions and cations were also observed. [52][53][54][55] In the case of Pt (111), an atomically smooth STM image was observed 56 and later an atomically resolved STM image was found at -0.25 V(SCE) in 0.1 M …”

Potential dependence of the non-linear polarizability of an Au(110) electrode

“…A Fourier analysis of these curves [eqn. (7) and ( 8)] yields the full set of coefficients describing the real and the imaginary parts of the non-linear polarizability. In the representation of eqn.…”

“…The open circles represent the measured values corresponding to eqn. (7). The (thick) solid line represents the non-linear polarizability calculated with the Ðrst Ðve elements (n \ 0È4) of the Fourier series.…”