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

Iosif Fromondi, Daniel Alberto Scherson

研究成果: Article査読

13 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)10154-10157
ページ数4
ジャーナルJournal of Physical Chemistry C
111
28
DOI
出版ステータスPublished - 2007 7 19
外部発表はい

ASJC Scopus subject areas

  • 物理化学および理論化学
  • 電子材料、光学材料、および磁性材料
  • 表面、皮膜および薄膜
  • エネルギー(全般)

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