Spectroscopic investigation of Pt—methanol interface in perchloric acid medium by sum-frequency generation
1994; Elsevier BV; Volume: 220; Issue: 6 Linguagem: Inglês
10.1016/0009-2614(94)00209-6
ISSN1873-4448
Autores Tópico(s)Advanced Chemical Physics Studies
ResumoWe recorded vibrational spectra of the CO poison resulting from the electrochemical decomposition of CH3OH on platinum by sum-frequency generation using the infrared free electron laser CLIO. At high CH3OH concentration (⩾0.1 M) in the electrolyte, both multi-bonded and linearly bonded CO are equally present. At lower CH3OH concentration (0.004 M), the multi-bonded species is predominant. The CO poison still remains on the surface at potentials (0.05 V/NHE) close to the hydrogen evolution onset.
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