{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/84388"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/84388","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Surface Coverage and Structure of Catalytic Monolayers on Au(111) Electrodes","abstract":"Finally, active molecular adsorbates are investigated. Cyclic voltammetric investigations of the $\\alpha$-dodecatungstosilicate anion, which has potential applications in catalysis and corrosion inhibition, indicate that it binds to the Au(111) electrode throughout the double layer potential region. At positive potentials, it delays the onset of gold oxide formation. At extreme negative electrode potentials, the anion desorbs from the surface, confirming activity observed with SPM. Quartz crystal microbalance studies found a mass change smaller than that expected for a full monolayer of $\\alpha$-dodecatungstosilicate anions, indicating that there is only a monolayer present on the surface and that it remains in the solution layer near the electrode surface after desorption. Finally, quartz crystal microbalance studies of uracil desorption from Au(111) in neutral solutions indicate that the desorbed mass changes linearly as a function of uracil concentration. This indicates that under these conditions uracil is actually adsorbed in a multilayer. (Abstract shortened by UMI.).","abstract_html":"Finally, active molecular adsorbates are investigated. Cyclic voltammetric investigations of the <span class=\"etd-inline-math\">&alpha;</span>-dodecatungstosilicate anion, which has potential applications in catalysis and corrosion inhibition, indicate that it binds to the Au(111) electrode throughout the double layer potential region. At positive potentials, it delays the onset of gold oxide formation. At extreme negative electrode potentials, the anion desorbs from the surface, confirming activity observed with SPM. Quartz crystal microbalance studies found a mass change smaller than that expected for a full monolayer of <span class=\"etd-inline-math\">&alpha;</span>-dodecatungstosilicate anions, indicating that there is only a monolayer present on the surface and that it remains in the solution layer near the electrode surface after desorption. Finally, quartz crystal microbalance studies of uracil desorption from Au(111) in neutral solutions indicate that the desorbed mass changes linearly as a function of uracil concentration. This indicates that under these conditions uracil is actually adsorbed in a multilayer. (Abstract shortened by UMI.).","abstract_has_math":true,"creators":["Niece, Brian Keith"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Gewirth, Andrew A."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T22:14:15Z","date_published":"2015-09-25T22:14:15Z","updated_at":"2026-07-22T22:26:23Z","subjects":["Chemistry, Analytical"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI9812721"],"render_values":[{"text":"(MiAaPQ)AAI9812721","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/84388","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Gewirth, Andrew A."]},{"key":"dc:creator","label":"Author","values":["Niece, Brian Keith"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T22:14:15Z","10000-01-01","1997"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chemistry, Analytical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/84388","(MiAaPQ)AAI9812721"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Finally, active molecular adsorbates are investigated. Cyclic voltammetric investigations of the $\\alpha$-dodecatungstosilicate anion, which has potential applications in catalysis and corrosion inhibition, indicate that it binds to the Au(111) electrode throughout the double layer potential region. At positive potentials, it delays the onset of gold oxide formation. At extreme negative electrode potentials, the anion desorbs from the surface, confirming activity observed with SPM. Quartz crystal microbalance studies found a mass change smaller than that expected for a full monolayer of $\\alpha$-dodecatungstosilicate anions, indicating that there is only a monolayer present on the surface and that it remains in the solution layer near the electrode surface after desorption. Finally, quartz crystal microbalance studies of uracil desorption from Au(111) in neutral solutions indicate that the desorbed mass changes linearly as a function of uracil concentration. This indicates that under these conditions uracil is actually adsorbed in a multilayer. (Abstract shortened by UMI.).","Made available in DSpace on 2015-09-25T22:14:15Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9812721.pdf: 5793146 bytes, checksum: 923c3ee7417c4e49a4c6b93db5d83405 (MD5) Previous issue date: 1997","Embargo set by: Seth Robbins for item 85669 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","161 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997."]},{"key":"dc:title","label":"Title","values":["Surface Coverage and Structure of Catalytic Monolayers on Au(111) Electrodes"]}]}],"canonical_facts":{"dc:contributor":["Gewirth, Andrew A."],"dc:creator":["Niece, Brian Keith"],"dc:date":["2015-09-25T22:14:15Z","10000-01-01","1997"],"dc:description":["Finally, active molecular adsorbates are investigated. Cyclic voltammetric investigations of the $\\alpha$-dodecatungstosilicate anion, which has potential applications in catalysis and corrosion inhibition, indicate that it binds to the Au(111) electrode throughout the double layer potential region. At positive potentials, it delays the onset of gold oxide formation. At extreme negative electrode potentials, the anion desorbs from the surface, confirming activity observed with SPM. Quartz crystal microbalance studies found a mass change smaller than that expected for a full monolayer of $\\alpha$-dodecatungstosilicate anions, indicating that there is only a monolayer present on the surface and that it remains in the solution layer near the electrode surface after desorption. Finally, quartz crystal microbalance studies of uracil desorption from Au(111) in neutral solutions indicate that the desorbed mass changes linearly as a function of uracil concentration. This indicates that under these conditions uracil is actually adsorbed in a multilayer. (Abstract shortened by UMI.).","Made available in DSpace on 2015-09-25T22:14:15Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9812721.pdf: 5793146 bytes, checksum: 923c3ee7417c4e49a4c6b93db5d83405 (MD5) Previous issue date: 1997","Embargo set by: Seth Robbins for item 85669 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","161 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1997."],"dc:identifier":["http://hdl.handle.net/2142/84388","(MiAaPQ)AAI9812721"],"dc:language":["eng"],"dc:subject":["Chemistry, Analytical"],"dc:title":["Surface Coverage and Structure of Catalytic Monolayers on Au(111) Electrodes"],"dc:type":["text"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:23Z"}