Metal-support interaction of Pt nanoparticles with ionically and non-ionically conductive supports for CO oxidation

Rima Isaifan, Holly A E Dole, Emil Obeid, Leonardo Lizarraga, Philippe Vernoux, Elena A. Baranova

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21 Citations (Scopus)

Abstract

Platinum nanoparticles of narrow size distribution (∼2.5 nm) were synthesized using a modified polyol method and deposited on yttria-stabilized zirconia (PtYSZ), carbon (PtC) and -alumina (Pt-Al 2O 3) supports, resulting in 1 wt of Pt loading. PtYSZ has the highest catalytic activity toward CO oxidation among the studied catalysts. Decrease in the average particle size of PtYSZ led to the increase in CO conversion at low temperatures. Enhanced performances can be explained by the thermally induced O 2- backspillover from YSZ over Pt nanoparticles in agreement with the electrochemical promotion mechanism. Observed effect becomes more pronounced with decreasing the particle size.

Original languageEnglish
JournalElectrochemical and Solid-State Letters
Volume15
Issue number3
DOIs
Publication statusPublished - 2012
Externally publishedYes

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ASJC Scopus subject areas

  • Electrochemistry
  • Electrical and Electronic Engineering
  • Materials Science(all)
  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

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