Title:
Near-surface study of structure-property relationships in electrochemically fabricated multi-component catalysts

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dc.contributor.advisor Alamgir, Faisal M.
dc.contributor.author Rettew, Robert E. en_US
dc.contributor.committeeMember Bottomley, Lawrence
dc.contributor.committeeMember Carter, W. Brent
dc.contributor.committeeMember Sholl, David
dc.contributor.committeeMember Singh, Preet
dc.contributor.department Materials Science and Engineering en_US
dc.date.accessioned 2013-01-17T21:46:37Z
dc.date.available 2013-01-17T21:46:37Z
dc.date.issued 2011-09-21 en_US
dc.description.abstract This 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.description.degree PhD en_US
dc.identifier.uri http://hdl.handle.net/1853/45841
dc.publisher Georgia Institute of Technology en_US
dc.subject Nanofilm en_US
dc.subject Electrodeposition en_US
dc.subject Redox replacement en_US
dc.subject SLRR en_US
dc.subject Platinum en_US
dc.subject XPS en_US
dc.subject Catalysis en_US
dc.subject X-ray absorption en_US
dc.subject.lcsh Surface chemistry
dc.subject.lcsh Electrocatalysis
dc.subject.lcsh Thin films
dc.title Near-surface study of structure-property relationships in electrochemically fabricated multi-component catalysts en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Alamgir, Faisal M.
local.contributor.corporatename School of Materials Science and Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication 22d172e2-aca1-4daf-8f04-5840535622ac
relation.isOrgUnitOfPublication 21b5a45b-0b8a-4b69-a36b-6556f8426a35
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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