Electrochemical Promotion of Gold Nanoparticles Supported on Yttria-Stabilized Zirconia

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dc.contributor.authorKim, Jong Min
dc.date.accessioned2011-11-23T16:24:38Z
dc.date.available2011-11-23T16:24:38Z
dc.date.created2011
dc.date.issued2011
dc.identifier.urihttp://hdl.handle.net/10393/20435
dc.identifier.urihttp://dx.doi.org/10.20381/ruor-5055
dc.description.abstractThe feasibility of highly dispersed gold nanocatalyst supported on yttria-stabilized zirconia (YSZ) for the model reactions of C2H4 and CO oxidation is demonstrated for the first time. Gold nanoparticles are synthesized on YSZ powder by chemical reduction of the precursor salt in the mixture of ethanol, water and polyvinylpyrrolidone (PVP). Resulting metal loading of the catalysts are 1 wt.% with average particle sizes ranging from 6 to 9 nm. Results of CO and C2H4 oxidation display catalytic activity at 65 0C and 25 0C for CO and C2H4 oxidation, respectively. The catalytic properties of the catalysts are different due to their average particle size. Electrochemical Promotion of Catalysis (EPOC) of C2H4 oxidation is demonstrated. Application of constant potential difference between two electrodes in the bipolar electrochemical cell led to increase in C2H4 conversion. A proposed mechanism explains the bipolar EPOC phenomenon through formation of O2- flux across the electrochemical cell, resulting in the change of Work Function of gold nanoparticles placed in between the electrodes and is electronically isolated.
dc.language.isoen
dc.publisherUniversité d'Ottawa / University of Ottawa
dc.subjectc2h4 oxidation
dc.subjectelectrochemical promotion
dc.subjectepoc
dc.subjectethylene oxidation
dc.subjectwireless
dc.subjectnemca
dc.subjectnanocatalyst
dc.subjectgold nanoparticle
dc.subjectysz
dc.subjectyttria stabilized zirconia
dc.titleElectrochemical Promotion of Gold Nanoparticles Supported on Yttria-Stabilized Zirconia
dc.typeThesis
dc.faculty.departmentGénie chimique et biologique / Chemical and Biological Engineering
dc.contributor.supervisorBaranova, Olena
dc.embargo.termsimmediate
dc.degree.nameMASc
dc.degree.levelmasters
dc.degree.disciplineGénie / Engineering
thesis.degree.nameMASc
thesis.degree.levelMasters
thesis.degree.disciplineGénie / Engineering
uottawa.departmentGénie chimique et biologique / Chemical and Biological Engineering
CollectionThèses, 2011 - // Theses, 2011 -

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