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dc.contributor.authorRettew, Robert E.en_US
dc.date.accessioned2013-01-17T21:46:37Z
dc.date.available2013-01-17T21:46:37Z
dc.date.issued2011-09-21en_US
dc.identifier.urihttp://hdl.handle.net/1853/45841
dc.description.abstractThis work outlines a series of developments and discoveries related to surface chemistry of controlled near-surface architectures. Through a combination of various X-ray spectroscopy techniques and innovative electrochemical fabrication techniques, valuable knowledge has been added to the fields of electrochemical fabrication, electrocatalysis, and fundamental surface chemistry. Described here is a specific new development in the technique of surface limited redox replacement (SLRR). This work, along with an accompanying journal publication1, reports the first-ever use of nickel as an intermediary for SLRR. In addition, this work identifies specific deviations from the nominal reaction stoichiometry for SLRR-grown films. This led to the proposal of a new reaction mechanism for the initial stages of the SLRR process, which will assist future fabrication attempts in this field. This work also discovered fundamental changes in Pt overlayer systems as the thickness of the overlayer on a gold support is increased from less than a single atomic monolayer to multilayer thicknesses. It was found that Pt overlayers below a certain threshold thickness exhibited increased affinity for hydroxyl groups, along with an increased propensity for formation of oxide and chloride species. These films were also studied for methanol, carbon monoxide, and ethylene glycol electro-oxidation. Finally, this work reports controlled surface architectures of Pt and Cu deposits on application-oriented TiO₂ nanotube arrays and Au-carbon supports.en_US
dc.publisherGeorgia Institute of Technologyen_US
dc.subjectNanofilmen_US
dc.subjectElectrodepositionen_US
dc.subjectRedox replacementen_US
dc.subjectSLRRen_US
dc.subjectPlatinumen_US
dc.subjectXPSen_US
dc.subjectCatalysisen_US
dc.subjectX-ray absorptionen_US
dc.subject.lcshSurface chemistry
dc.subject.lcshElectrocatalysis
dc.subject.lcshThin films
dc.titleNear-surface study of structure-property relationships in electrochemically fabricated multi-component catalystsen_US
dc.typeDissertationen_US
dc.description.degreePhDen_US
dc.contributor.departmentMaterials Science and Engineeringen_US
dc.description.advisorCommittee Chair: Alamgir, Faisal; Committee Member: Bottomley, Lawrence; Committee Member: Carter, Brent; Committee Member: Sholl, David; Committee Member: Singh, Preeten_US


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