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

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

doi:10.1149/2.024203esl

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

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 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 language	English
Pages (from-to)	E14-E17
Journal	Electrochemical and Solid-State Letters
Volume	15
Issue number	3
DOIs	https://doi.org/10.1149/2.024203esl
Publication status	Published - 2012
Externally published	Yes

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

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.",

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T1 - Metal-support interaction of Pt nanoparticles with ionically and non-ionically conductive supports for CO oxidation

AU - Isaifan, Rima J.

AU - Dole, Holly A.E.

AU - Obeid, Emil

AU - Lizarraga, Leonardo

AU - Vernoux, Philippe

AU - Baranova, Elena A.

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

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VL - 15

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JO - Electrochemical and Solid-State Letters

JF - Electrochemical and Solid-State Letters

IS - 3

ER -

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

Abstract

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