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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/65440
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dc.creatorTayline Paloma Viana de Medeirospt_BR
dc.creatorArilza de Oliveira Portopt_BR
dc.creatorHudson de Aguiar Bicalhopt_BR
dc.creatorJuan Carlos González Pérezpt_BR
dc.creatorRafik Naccachept_BR
dc.creatorAna Paula de Carvalho Teixeirapt_BR
dc.date.accessioned2024-03-07T17:23:55Z-
dc.date.available2024-03-07T17:23:55Z-
dc.date.issued2021-
dc.citation.volume9pt_BR
dc.citation.issue24pt_BR
dc.citation.spage7622pt_BR
dc.citation.epage7631pt_BR
dc.identifier.doihttps://doi.org/10.1039/d1tc01734apt_BR
dc.identifier.issn2050-7534pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/65440-
dc.description.resumoCarbon-based nanomaterials, such as polymeric graphitic carbon nitrides, have garnered attention due to their metal-free structure, exceptional thermal and mechanical stability and unique extended aromatic system, imparting them with semiconductor properties. Furthermore, their efficient electron storage and fast charge transfer have opened new research possibilities in a plethora of applications. However, bulk polymeric carbon nitrides present limited surface areas and scarce functional groups, limiting their application. Exfoliation of these bulk systems, to nanosheets, is an effective way to overcome these drawbacks. However, there is a lack of understanding as to how these exfoliation processes affect their properties. Herein, we present a study of the effects of thermal and acid exfoliation processes on melamine, dicyandiamide and urea-based carbon nitrides' morphology and optical properties. We investigate how both exfoliation methods affect their microstructure, surface area and thermal stability. The thermally treated samples lead to single sheets and more organized structures without significantly impacting the surface chemistry. Contrarily, the acid treatment increases the samples' thickness while reducing their length and imparts them with oxygenated moieties. Both treatments affect the bandgap energies and electronic transitions, influencing their fluorescence profiles, lifetimes and fluorescence quantum yields. Our results provide a comprehensive understanding of how the exfoliation processes can be used to modulate the properties of polymeric graphitic carbon nitrides for the development of efficient materials in applications spanning wastewater treatment to biodiesel production.pt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE FÍSICApt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Materials Chemistry C-
dc.rightsAcesso Restritopt_BR
dc.subjectCarbon nitridespt_BR
dc.subjectOptical propertiespt_BR
dc.subject.otherNitreto de carbonopt_BR
dc.subject.otherPropriedades ópticaspt_BR
dc.titleThe effects of chemical and thermal exfoliation on the physico-chemical and optical properties of carbon nitridespt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://pubs.rsc.org/en/content/articlelanding/2021/tc/d1tc01734apt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-8118-6155pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-4037-0703pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-9155-1657pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-3140-4476pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4985-7502pt_BR
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