Raman and XPS studies of ammonia sensitive polypyrrole nanorods and nanoparticles

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dc.contributor.authorŠetka, Milenacs
dc.contributor.authorCalavia, Raulcs
dc.contributor.authorVojkůvka, Lukášcs
dc.contributor.authorLlobet, Eduardcs
dc.contributor.authorDrbohlavová, Janacs
dc.contributor.authorVallejos Vargas, Stellacs
dc.coverage.issue1cs
dc.coverage.volume9cs
dc.date.accessioned2020-08-04T11:00:33Z
dc.date.available2020-08-04T11:00:33Z
dc.date.issued2019-06-11cs
dc.description.abstractRaman and XPS studies of ammonia sensitive polypyrrole nanorods and nanoparticles, respectively and tested upon ammonia exposure using Raman and X-ray photonelectrone spectroscopy (XPS). Characterization of both nanomaterilas via Raman spectroscopy demostrates the formation of PPy, displaying vibration bands consistent with the literature. Additionally, XPS reveals the presence of neutral PPy species as major components in PPy NRs and PPy NPs, and other species including polarons and bipolarons. Raman and XPS analysis after ammonia exposure show changes in physical/chemical properties of PPy, confirimg the potential of both samples for ammonia sensing. Results demostrate that electrochemically synthesized NRs involve both proton and electron transfer mechansims during ammonia exposure, as oposit to the chemically synthesized NPs, which show the mechamism dominated by electron transfer. Thus, the different detection mechanisms in PPy NRs and PPy NPs appear to be connected to the particular morphological and chemical composition of each film. These results contribute to elucidate the mechanisms involved in ammonia detection and influence of the synthesis routes and physical/chemical characteristics of PPy.en
dc.formattextcs
dc.format.extent1-10cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationScientific Reports. 2019, vol. 9, issue 1, p. 1-10.en
dc.identifier.doi10.1038/s41598-019-449000-1cs
dc.identifier.issn2045-2322cs
dc.identifier.other157470cs
dc.identifier.urihttp://hdl.handle.net/11012/180467
dc.language.isoencs
dc.publisherSpringer Naturecs
dc.relation.ispartofScientific Reportscs
dc.relation.urihttps://www.nature.com/articles/s41598-019-44900-1cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2045-2322/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectsensing propertiesen
dc.subjectsurfaceen
dc.subjectsensoren
dc.subjectspectroscopyen
dc.subjectpolypyrroleen
dc.subjectfilmsen
dc.subjectfabricationen
dc.subjectnanostructuresen
dc.subjectindetificationen
dc.subjectconductivityen
dc.titleRaman and XPS studies of ammonia sensitive polypyrrole nanorods and nanoparticlesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-157470en
sync.item.dbtypeVAVen
sync.item.insts2022.04.08 12:54:27en
sync.item.modts2022.04.08 12:14:55en
thesis.grantorVysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií. Ústav mikroelektronikycs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Chytré nanonástrojecs
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