{"459681":{"#nid":"459681","#data":{"type":"event","title":"PhD Defense by Taylor McLachlan Shapero","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EMSE PhD Defense - Taylor McLachlan Shapero\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EDate:\u0026nbsp;Friday, October 23rd\u003C\/p\u003E\u003Cp\u003ETime: 4pm - 6pm\u003C\/p\u003E\u003Cp\u003ELocation: EBB Building, Room 4029\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee:\u0026nbsp;\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDr. Kenneth H. Sandhage, Advisor, MSE\u003C\/p\u003E\u003Cp\u003E\u003Cbr \/\u003E Dr. Meilin Liu, MSE\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EDr. Hamid Garmestani, MSE \u0026nbsp; \u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EDr. Preet Singh, MSE\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EDr. Lawrence Bottomley, Chemistry\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ETitle:\u003C\/strong\u003E\u0026nbsp;\u0026nbsp;Shape Preserving Conversion Reactions of\u0026nbsp;Alumina Structures using Metal Halides:\u0026nbsp;Structures, Kinetics, and Applications\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EPorous anodic aluminum oxide nanostructures provide hexagonally ordered arrays of pores with periodic distribution and tunable size and length. The research in this dissertation introduces a new process for partially converting the chemistry of the aluminum oxide nanostructure to titanium dioxide while retaining shape through a gaseous metal halide (TiF\u003Csub\u003E4\u003C\/sub\u003E) reactive conversion process. By this process, oriented single and multi-wall titania nanotube arrays with tailored structures can be formed. This vapor-based process allows titania formation within small pores inaccessible to liquid-based approaches through an intermediary TiOF\u003Csub\u003E2\u003C\/sub\u003E product. The research explores applications of converted titania structures, including dye-sensitized solar cells. The reactive conversion kinetics of Al\u003Csub\u003E2\u003C\/sub\u003EO\u003Csub\u003E3\u003C\/sub\u003E into TiOF\u003Csub\u003E2\u003C\/sub\u003E was studied to reveal two kinetic regimes limited by chemical reaction and solid-state diffusion, respectively, allowing a stronger understanding of how the conversion reaction might be optimized in future applications.\u0026nbsp; Other metal fluoride reactions with anodic aluminum oxide (Al\u003Csub\u003E2\u003C\/sub\u003EO\u003Csub\u003E3\u003C\/sub\u003E) are also studied (including the successful conversion of Al\u003Csub\u003E2\u003C\/sub\u003EO\u003Csub\u003E3\u003C\/sub\u003E into Nb\u003Csub\u003E2\u003C\/sub\u003EO\u003Csub\u003E5\u003C\/sub\u003E) showing the versatility of converting anodic aluminum oxide for applications requiring certain other oxide materials.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E \u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Shape Preserving Conversion Reactions of Alumina Structures using Metal Halides: Structures, Kinetics, and Applications"}],"uid":"27707","created_gmt":"2015-10-16 08:36:01","changed_gmt":"2016-10-08 02:14:25","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2015-10-23T17:00:00-04:00","event_time_end":"2015-10-23T19:00:00-04:00","event_time_end_last":"2015-10-23T19:00:00-04:00","gmt_time_start":"2015-10-23 21:00:00","gmt_time_end":"2015-10-23 23:00:00","gmt_time_end_last":"2015-10-23 23:00:00","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":""}}}