Electrochemical NMR study of CO adsorbed on PT nanoparticles decorated with PD

P. K. Babu, Hee Soo Kim, Andrzej Wieckowski, Eric Oldfield

Research output: Contribution to journalConference article

Abstract

Pt/Pd nanoparticle catalysts with superior reactivity towards formic acid oxidation were produced by spontaneous deposition of Pd on Pt. Deconvolution of the broad C NMR spectrum yielded two peaks that could be assigned to CO adsorbed on Pt and Pd sites. The 5δ orbital of CO was important in its chemisorption on Pd atoms, which agreed with the theoretical predictions. Interaction of Pd with Pt led to a reduction in the Fermi level local density of states (Ef-LDOS) at the Pd sites. The CO adsorption became weaker. The bond between CO and Pt sites was stronger than that of CO on pure Pt due to increased Ef-LDOS. The excellent reactivity of this Pt/Pd catalyst suggested that formic acid oxidation occurs predominantly via the direct dehydrogenation path. This is an abstract of a paper presented at the 227th ACS National Meeting (Anaheim, CA 3/28/2004-4/1/2004).

Original languageEnglish (US)
Pages (from-to)COLL-199
JournalACS National Meeting Book of Abstracts
Volume227
Issue number1
StatePublished - 2004
Event227th ACS National Meeting Abstracts of Papers - Anaheim, CA., United States
Duration: Mar 28 2004Apr 1 2004

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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