{"541711":{"#nid":"541711","#data":{"type":"event","title":"PhD Defense by Adam J Vitale","body":[{"value":"\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003ETHE SCHOOL OF MATERIALS SCIENCE AND ENGINEERING\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003EGEORGIA INSTITUTE OF TECHNOLOGY\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003EUnder the provisions of the regulations for the degree\u003C\/strong\u003E\u003Cbr \/\u003E \u003Cbr \/\u003E \u003Cstrong\u003EDOCTOR OF PHILOSOPHY\u003C\/strong\u003E\u003Cbr \/\u003E \u003Cbr \/\u003E \u003Cstrong\u003Eon Wednesday, June 15, 2016\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003E10:00 AM\u003C\/strong\u003E\u003Cbr \/\u003E \u003Cstrong\u003Ein Love 295\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003Ewill be held the\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003EDISSERTATION DEFENSE\u003C\/strong\u003E\u003Cbr \/\u003E \u003Cbr \/\u003E \u003Cstrong\u003Efor\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003EAdam J. Vitale\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003E\u0022Near Surface Evaluation of Structural, Electronic and Chemical Properties of Templated Pt Monolayers\u0022\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003ECommittee Members:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003EDr. Faisal Alamgir, MSE (Advisor)\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003EDr. Meilin Liu, MSE\u003Cbr \/\u003E Dr. Preet Singh, MSE\u003Cbr \/\u003E Dr. Eric Vogel, MSE\u003Cbr \/\u003E Dr.\u0026nbsp;Krista Walton, CHBE\u003C\/strong\u003E\u003C\/p\u003E\u003Cp align=\u0022center\u0022\u003E\u003Cstrong\u003E\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EPlatinum group metals are the choice catalysts for a wide variety of catalytic reactions, including oxygen reduction. The focus of this study is to explore the dimensional aspect of both electronic and structure-driven surface properties of Pt monolayers grown via templating on Au. Surface limited redox replacement is used to provide precise layer-by-layer growth of Pt to synthesize well-controlled \u2018core-shell\u2019 catalyst architectures. \u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EThe interaction between core and shell manifests itself through both a structural contribution of epitaxial strain and d-electron orbital mixing. The cumulative effect of the secondary support on the surface Pt and its interaction with adsorbate species is referred to as a ligand effect. The main goal of the research is to investigate how these ligand effects contribute to the structural and electronic properties of Pt monolayer catalysts. \u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EOne focus of this study is to explore the incorporation of single layer graphene into the core-shell catalyst architecture. Fully wetted 4-5 monolayer Pt films can be grown on graphene, maximizing the exposed catalyst surface with high Pt activity and stability. The research also looks to investigate the use of single-layer graphene as an intimate capping sheet to prevent surface dissolution of electrode metals into the electrolyte, without adversely affecting activity. \u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EX-ray photoelectron spectroscopy and extended x-ray absorption fine structure techniques are used to examine surface composition and local atom-atom correlations (bond distance, strain, coordination) as well as core-shell charge transfer effects. Cyclic voltammetry and the oxygen reduction reaction are used as probes to examine the electrochemically active area of Pt monolayers and catalyst activity, respectively.\u003C\/p\u003E\u003Cp\u003E \u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Near Surface Evaluation of Structural, Electronic and Chemical Properties of Templated Pt Monolayers"}],"uid":"27707","created_gmt":"2016-06-03 08:09:44","changed_gmt":"2016-10-08 02:17:58","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2016-06-15T11:00:00-04:00","event_time_end":"2016-06-15T13:00:00-04:00","event_time_end_last":"2016-06-15T13:00:00-04:00","gmt_time_start":"2016-06-15 15:00:00","gmt_time_end":"2016-06-15 17:00:00","gmt_time_end_last":"2016-06-15 17:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}