Oxidation of adsorbed CO on Pt(111) in CO-saturated perchloric acid aqueous solutions: Simultaneous in situ time-resolved reflectance spectroscopy and second harmonic generation studies

Iosif Fromondi, Daniel Alberto Scherson

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Simultaneous normalized differential reflectance spectroscopy (ΔR/R) and second harmonic generation (SHG) has been employed to follow, independently, OH and adsorbed CO (COads) on a single Pt(111) microfacet in CO-saturated aqueous perchloric acidic solutions during voltammetric cycles, leading to the oxidation of COads and subsequent readsorption of CO on the surface. The results obtained are consistent with the disruption of the √19 × √19R19.1° phase just prior to the oxidation of adsorbed CO.

Original languageEnglish
Pages (from-to)20749-20751
Number of pages3
JournalJournal of Physical Chemistry B
Issue number42
Publication statusPublished - 2006 Oct 26
Externally publishedYes


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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