(Bi)sulfate adsorption on quasiperfect Pt(111) facets from acidic aqueous electrolytes as monitored by optical techniques

Iosif Fromondi; Daniel Alberto Scherson

doi:10.1021/jp073330f

(Bi)sulfate adsorption on quasiperfect Pt(111) facets from acidic aqueous electrolytes as monitored by optical techniques

Iosif Fromondi, Daniel Alberto Scherson^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The adsorption of (bi)sulfate on quasiperfect Pt(111) facets was monitored by simultaneous reflectance spectroscopy (RS) and second harmonic generation (SHG) while scanning the potential linearly between prescribed values in aqueous acidic solutions. Simple correlations were found between both the normalized differential reflectance, ΔR/R (λ = 633 nm, angle of incidence, Φ _inc = 45°) and the intensity of the SHG light, I _pp(2ω) (λ _inc = 590 nm, where pp refers to the input and output polarization) and the Gibbs free excess of (bi)sulfate, Γ _HSO4· (Herrero et al. J. Electroanal. Chem. 2002, 554,79-89), in a potential range negative to the sharp voltammetric peak, for (bi)sulfate concentrations spanning over two orders of magnitudes.

Original language	English
Pages (from-to)	10154-10157
Number of pages	4
Journal	Journal of Physical Chemistry C
Volume	111
Issue number	28
DOIs	https://doi.org/10.1021/jp073330f
Publication status	Published - 2007 Jul 19
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films
Energy(all)

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title = "(Bi)sulfate adsorption on quasiperfect Pt(111) facets from acidic aqueous electrolytes as monitored by optical techniques",

abstract = "The adsorption of (bi)sulfate on quasiperfect Pt(111) facets was monitored by simultaneous reflectance spectroscopy (RS) and second harmonic generation (SHG) while scanning the potential linearly between prescribed values in aqueous acidic solutions. Simple correlations were found between both the normalized differential reflectance, ΔR/R (λ = 633 nm, angle of incidence, Φ inc = 45°) and the intensity of the SHG light, I pp(2ω) (λ inc = 590 nm, where pp refers to the input and output polarization) and the Gibbs free excess of (bi)sulfate, Γ HSO4· (Herrero et al. J. Electroanal. Chem. 2002, 554,79-89), in a potential range negative to the sharp voltammetric peak, for (bi)sulfate concentrations spanning over two orders of magnitudes.",

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T1 - (Bi)sulfate adsorption on quasiperfect Pt(111) facets from acidic aqueous electrolytes as monitored by optical techniques

AU - Fromondi, Iosif

AU - Scherson, Daniel Alberto

PY - 2007/7/19

Y1 - 2007/7/19

N2 - The adsorption of (bi)sulfate on quasiperfect Pt(111) facets was monitored by simultaneous reflectance spectroscopy (RS) and second harmonic generation (SHG) while scanning the potential linearly between prescribed values in aqueous acidic solutions. Simple correlations were found between both the normalized differential reflectance, ΔR/R (λ = 633 nm, angle of incidence, Φ inc = 45°) and the intensity of the SHG light, I pp(2ω) (λ inc = 590 nm, where pp refers to the input and output polarization) and the Gibbs free excess of (bi)sulfate, Γ HSO4· (Herrero et al. J. Electroanal. Chem. 2002, 554,79-89), in a potential range negative to the sharp voltammetric peak, for (bi)sulfate concentrations spanning over two orders of magnitudes.

AB - The adsorption of (bi)sulfate on quasiperfect Pt(111) facets was monitored by simultaneous reflectance spectroscopy (RS) and second harmonic generation (SHG) while scanning the potential linearly between prescribed values in aqueous acidic solutions. Simple correlations were found between both the normalized differential reflectance, ΔR/R (λ = 633 nm, angle of incidence, Φ inc = 45°) and the intensity of the SHG light, I pp(2ω) (λ inc = 590 nm, where pp refers to the input and output polarization) and the Gibbs free excess of (bi)sulfate, Γ HSO4· (Herrero et al. J. Electroanal. Chem. 2002, 554,79-89), in a potential range negative to the sharp voltammetric peak, for (bi)sulfate concentrations spanning over two orders of magnitudes.

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(Bi)sulfate adsorption on quasiperfect Pt(111) facets from acidic aqueous electrolytes as monitored by optical techniques

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