Resonant Raman scattering of anthracene-based carbons in the secondary carbonization stage

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dc.creatorOlga Aleksandrovna Maslova
dc.creatorMohamed-Ramzi Ammar
dc.creatorCristiano Fantini Leite
dc.creatorSvetlana Aleksandrovna Barannikova
dc.creatorMarcos Assunção Pimenta
dc.date.accessioned2023-08-28T19:42:07Z
dc.date.accessioned2025-09-08T23:02:41Z
dc.date.available2023-08-28T19:42:07Z
dc.date.issued2021
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.identifier.doihttps://doi.org/10.1002/jrs.6051
dc.identifier.issn1097-4555
dc.identifier.urihttps://hdl.handle.net/1843/58307
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Raman Spectroscopy
dc.rightsAcesso Restrito
dc.subjectRessonância
dc.subjectCarbono
dc.subjectEspectroscopia de Raman
dc.subject.otherAnthracene-based coke
dc.subject.otherD-band
dc.subject.otherDouble resonance process
dc.subject.otherGraphitizable carbon
dc.subject.otherSecondary carbonization
dc.titleResonant Raman scattering of anthracene-based carbons in the secondary carbonization stage
dc.typeArtigo de periódico
local.citation.epage677
local.citation.issue3
local.citation.spage670
local.citation.volume52
local.description.resumoThe Raman spectra of graphene-based matter exhibit a set of defect/disorder-induced bands. The D band, which exhibits a strong dispersion up to ~50 cm−1/eV, comes from transverse optical phonons around K or K′ in the first Brillouin zone and involves an intervalley double resonance (DR) Raman process. In the present work, resonant Raman scattering (lines ranging from 1.58 to 3.81 eV) is used to study the unusual behavior of the one-phonon Raman band of a carbonaceous material (anthracene-based carbon which is one of the graphitizable carbons) upon its secondary carbonization stage (450°C–1000°C). While the G band appears to be nondispersive, the D band exhibits a change in both position and intensity. Its dispersion progressively rises from ~6 cm−1/eV to values close to what is usually observed in defected graphene-based systems when anthracene-based carbon becomes almost pure. This evolution appears to be correlated with a release of hydrogen (fixed on the edges of polyaromatic layers) questioning their role in changing the D band resonance conditions.
local.identifier.orcidhttps://orcid.org/0000-0002-5460-4091
local.identifier.orcidhttps://orcid.org/0000-0002-1607-9513
local.identifier.orcidhttps://orcid.org/0000-0003-0436-7857
local.identifier.orcidhttps://orcid.org/0000-0001-5010-9969
local.identifier.orcidhttps://orcid.org/0000-0002-3389-0682
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/jrs.6051

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