{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/105781"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/105781","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Coupling Raman spectroscopy and scanning electrochemical microscopy for spectroelectrochemical analysis of electrode interfaces","abstract":"Structural heterogeneity of an electrode interface causes variation in the reactivity across the electrochemically active surface. Bulk electrochemical measurements are unable to parse out the contributions to different structural motifs and how they affect surface processes, leaving the spatial correlation between structure and reactivity unobtained. Furthermore, electrochemical measurements are incapable of performing speciation of materials, meaning an electrochemical technique alone would not suffice in determining the link between structure and reactivity. This absence of information is especially hampering in cases where the composition or structure of the electrode surface changes over the course of an experiment. Ascertaining the link between reactivity and structure therefore requires new multimodal platforms able to simultaneously measure site-specific electrochemical reactivity and structural properties. To accomplish this, we constructed a spectroelectrochemical platform of combined scanning electrochemical microscopy (SECM) and Raman spectroscopy. Through alignment of a laser line to the same location of a SECM probe, the surface of a material can be analyzed in situ by co-localized, temporally matched methods. We applied this setup to study electrode interfaces of interest including redox active colloids, modified graphene layers, and single layer graphene with sublayer gold nanoparticles. In each case the instrument setup afforded information only obtainable by coupling the two techniques, demonstrating the usefulness of a spatially resolved multimodal platform for the in situ investigation of electrode interfaces.","abstract_html":"Structural heterogeneity of an electrode interface causes variation in the reactivity across the electrochemically active surface. Bulk electrochemical measurements are unable to parse out the contributions to different structural motifs and how they affect surface processes, leaving the spatial correlation between structure and reactivity unobtained. Furthermore, electrochemical measurements are incapable of performing speciation of materials, meaning an electrochemical technique alone would not suffice in determining the link between structure and reactivity. This absence of information is especially hampering in cases where the composition or structure of the electrode surface changes over the course of an experiment. Ascertaining the link between reactivity and structure therefore requires new multimodal platforms able to simultaneously measure site-specific electrochemical reactivity and structural properties. To accomplish this, we constructed a spectroelectrochemical platform of combined scanning electrochemical microscopy (SECM) and Raman spectroscopy. Through alignment of a laser line to the same location of a SECM probe, the surface of a material can be analyzed in situ by co-localized, temporally matched methods. We applied this setup to study electrode interfaces of interest including redox active colloids, modified graphene layers, and single layer graphene with sublayer gold nanoparticles. In each case the instrument setup afforded information only obtainable by coupling the two techniques, demonstrating the usefulness of a spatially resolved multimodal platform for the in situ investigation of electrode interfaces.","abstract_has_math":false,"creators":["Schorr, Noah Benjamin"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":["Rodríguez-López, Joaquín","Murphy, Catherine J","Vura-Weis, Josh","Sweedler, Jonathan V"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2019,"date_issued":"2019-11-26T20:49:20Z","date_published":"2019-11-26T20:49:20Z","updated_at":"2026-07-22T22:24:45Z","subjects":["Raman spectroscopy, scanning electrochemical microscopy, electrochemistry, multimodal"],"languages":["en"],"rights":["Copyright 2019 Noah Schorr"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/105781","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Rodríguez-López, Joaquín","Murphy, Catherine J","Vura-Weis, Josh","Sweedler, Jonathan V"]},{"key":"dc:creator","label":"Author","values":["Schorr, Noah Benjamin"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2019-11-26T20:49:20Z","2021-11-27T10:15:30Z","2019-07-05","2019-08"]},{"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":["Raman spectroscopy, scanning electrochemical microscopy, electrochemistry, multimodal"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2019 Noah Schorr"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/105781"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Structural heterogeneity of an electrode interface causes variation in the reactivity across the electrochemically active surface. Bulk electrochemical measurements are unable to parse out the contributions to different structural motifs and how they affect surface processes, leaving the spatial correlation between structure and reactivity unobtained. Furthermore, electrochemical measurements are incapable of performing speciation of materials, meaning an electrochemical technique alone would not suffice in determining the link between structure and reactivity. This absence of information is especially hampering in cases where the composition or structure of the electrode surface changes over the course of an experiment. Ascertaining the link between reactivity and structure therefore requires new multimodal platforms able to simultaneously measure site-specific electrochemical reactivity and structural properties. To accomplish this, we constructed a spectroelectrochemical platform of combined scanning electrochemical microscopy (SECM) and Raman spectroscopy. Through alignment of a laser line to the same location of a SECM probe, the surface of a material can be analyzed in situ by co-localized, temporally matched methods. We applied this setup to study electrode interfaces of interest including redox active colloids, modified graphene layers, and single layer graphene with sublayer gold nanoparticles. In each case the instrument setup afforded information only obtainable by coupling the two techniques, demonstrating the usefulness of a spatially resolved multimodal platform for the in situ investigation of electrode interfaces.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-08-01","The student, Noah Schorr, accepted the attached license on 2019-07-03 at 16:00.","The student, Noah Schorr, submitted this Dissertation for approval on 2019-07-03 at 16:07.","This Dissertation was approved for publication on 2019-07-05 at 10:24.","DSpace SAF Submission Ingestion Package generated from Vireo submission #14158 on 2019-11-26 at 13:04:24","Made available in DSpace on 2019-11-26T20:49:20Z (GMT). No. of bitstreams: 3 SCHORR-DISSERTATION-2019.pdf: 6607593 bytes, checksum: 60621d2f0a5eed3373b175dc4b0017d7 (MD5) LICENSE.txt: 4208 bytes, checksum: e41f3249b91f458225a106d379fa26d7 (MD5) PROQUEST_LICENSE.txt: 4554 bytes, checksum: c008d124924616e7c197fc57872e02d5 (MD5) Previous issue date: 2019-07-05","Embargo set by: Seth Robbins for item 112926 Lift date: 2021-11-26T20:49:41Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system","U of I Only Restriction Lifted for Item 112926 on 2021-11-27T10:15:30Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Coupling Raman spectroscopy and scanning electrochemical microscopy for spectroelectrochemical analysis of electrode interfaces"]}]}],"canonical_facts":{"dc:contributor":["Rodríguez-López, Joaquín","Murphy, Catherine J","Vura-Weis, Josh","Sweedler, Jonathan V"],"dc:creator":["Schorr, Noah Benjamin"],"dc:date":["2019-11-26T20:49:20Z","2021-11-27T10:15:30Z","2019-07-05","2019-08"],"dc:description":["Structural heterogeneity of an electrode interface causes variation in the reactivity across the electrochemically active surface. Bulk electrochemical measurements are unable to parse out the contributions to different structural motifs and how they affect surface processes, leaving the spatial correlation between structure and reactivity unobtained. Furthermore, electrochemical measurements are incapable of performing speciation of materials, meaning an electrochemical technique alone would not suffice in determining the link between structure and reactivity. This absence of information is especially hampering in cases where the composition or structure of the electrode surface changes over the course of an experiment. Ascertaining the link between reactivity and structure therefore requires new multimodal platforms able to simultaneously measure site-specific electrochemical reactivity and structural properties. To accomplish this, we constructed a spectroelectrochemical platform of combined scanning electrochemical microscopy (SECM) and Raman spectroscopy. Through alignment of a laser line to the same location of a SECM probe, the surface of a material can be analyzed in situ by co-localized, temporally matched methods. We applied this setup to study electrode interfaces of interest including redox active colloids, modified graphene layers, and single layer graphene with sublayer gold nanoparticles. In each case the instrument setup afforded information only obtainable by coupling the two techniques, demonstrating the usefulness of a spatially resolved multimodal platform for the in situ investigation of electrode interfaces.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-08-01","The student, Noah Schorr, accepted the attached license on 2019-07-03 at 16:00.","The student, Noah Schorr, submitted this Dissertation for approval on 2019-07-03 at 16:07.","This Dissertation was approved for publication on 2019-07-05 at 10:24.","DSpace SAF Submission Ingestion Package generated from Vireo submission #14158 on 2019-11-26 at 13:04:24","Made available in DSpace on 2019-11-26T20:49:20Z (GMT). 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