Carbon Monoxide Oxidation on Nanostructured Pt Thin Films Synthesized by Pulsed Laser Deposition: Insights into the Morphology Effects | Zendy

Fatma Saidani | Zendy; Dominic Rochefort | Zendy; Mohamed Mohamedi | Zendy

Open Access

Carbon Monoxide Oxidation on Nanostructured Pt Thin Films Synthesized by Pulsed Laser Deposition: Insights into the Morphology Effects

Author(s) -

Fatma Saidani,

Dominic Rochefort,

Mohamed Mohamedi

Publication year - 2010

Publication title -

laser chemistry

Language(s) - English

Resource type - Journals

eISSN - 1026-8014

pISSN - 0278-6273

DOI - 10.1155/2010/143684

Subject(s) - pulsed laser deposition , co poisoning , deposition (geology) , carbon monoxide , thin film , morphology (biology) , chemical engineering , torr , catalysis , chemistry , surface roughness , nanotechnology , materials science , composite material , organic chemistry , paleontology , genetics , thermodynamics , physics , sediment , engineering , biology

Nanostructured Pt thin film catalysts of various morphologies have been synthesized by pulsed laser deposition and studied towards enhancing their tolerance to CO poisoning, a reaction of critical issue to liquid fuel cells. It was discovered that Pt film deposited under 5 Torr of He background pressure showed the highest electroactive surface area and the lowest onset potential of CO oxidation demonstrating an enhancement of the CO poisoning resistance. The reason for such enhanced electrocatalytic activity is ascribed to the high roughness of Pt surface. This study further provides a methodology for the proper design of electrocatalysts that might be considered to be developed by the pulsed laser deposition technique.

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