University of Illinois Urbana-Champaign

Structure/reactivity Study of Methanol Fuel Cell Catalysts: NMR, FTIR, and Electrochemistry

Rice, Cynthia Ann

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Description

Title
Structure/reactivity Study of Methanol Fuel Cell Catalysts: NMR, FTIR, and Electrochemistry
Author(s)
Rice, Cynthia Ann
Issue Date
2000
Doctoral Committee Chair(s)
Wieckowski, Andrzej
Department of Study
Chemistry
Discipline
Chemistry
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Chemistry, Physical
Language
eng
Abstract
Catalytic reactivity of Ru doped Pt nanoparticles for methanol electrooxidation reactions were also investigated, for both a commercially available Pt/Ru alloy and Pt nanoparticles doped with a spontaneously deposited sub-monolayer of Ru. An increase in catalytic activity was measured for samples containing higher percentages of metallic Ru. 13C NMR of adsorbed CO on Ru modified Pt nanoparticles show a correlation between the Pt-CO bond strength, supporting the ligand enhancement mechanism. Aside from simple potential pretreatment of the catalyst surface, alterations of the Pt crystal lattice were attempted to preferentially form Pt(111) facets.
Graduation Semester
2000
Type of Resource
text
Permalink
http://hdl.handle.net/2142/84473

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