Exfoliation and characterization of a two-dimensional serpentine-based material

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dc.creatorJoyce Cristina da Cruz Santos
dc.creatorAna Paula Moreira Barboza
dc.creatorMatheus Josué de Souza Matos
dc.creatorIngrid David Barcelos
dc.creatorThales Fernando Damasceno Fernandes
dc.creatorEdmar Avellar Soares
dc.creatorRoberto Luiz Moreira
dc.creatorBernardo Ruegger Almeida Neves
dc.date.accessioned2023-08-29T16:59:23Z
dc.date.accessioned2025-09-09T01:31:58Z
dc.date.available2023-08-29T16:59:23Z
dc.date.issued2019
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/10.1088/1361-6528/ab3732
dc.identifier.issn1361-6528
dc.identifier.urihttps://hdl.handle.net/1843/58325
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofNanotechnology
dc.rightsAcesso Restrito
dc.subjectSerpentina (Mineralogia)
dc.subjectScanning probe microscopy
dc.subject.otherSerpentine mineral
dc.subject.otherAntigorite
dc.subject.otherMechanical exfoliation
dc.subject.other2D materials
dc.subject.otherScanning probe microscopy
dc.titleExfoliation and characterization of a two-dimensional serpentine-based material
dc.typeArtigo de periódico
local.citation.epage8
local.citation.issue44
local.citation.spage1
local.citation.volume30
local.description.resumoWe report on an experimental investigation of serpentine, an abundant phyllosilicate, as an alternative source of two-dimensional (2D) nanomaterials. We show, through scanning probe microscopy (SPM) measurements, that natural serpentine mineral can be mechanically exfoliated down to few-layer flakes, where monolayers can be easily resolved. The parent serpentine bulk material was initially characterized via conventional techniques like XRD, XPS, FTIR and Raman spectroscopies and the results show that it is predominantly constituted by the antigorite mineral. From ab initio calculations using density functional theory, we also determine the geometry and electronic structure of antigorite, the observed structural form of serpentine. Additionally, we further characterized electrical and mechanical properties of the obtained 2D material flakes using SPM and broadband synchrotron infrared nanospectroscopy. Wavelength tuning of the serpentine vibrational resonances, assigned to in- and out-of-plane molecular vibrations, are observed and compared with the FTIR characterization of the parent bulk material. They show that there is no degradation of serpentine’s structural properties during its mechanical exfoliation down to nanometer-thin sheets. Therefore, our results introduce the serpentine mineral as an attractive low-cost candidate in 2D materials applications.
local.identifier.orcidhttps://orcid.org/0000-0002-1807-971X
local.identifier.orcidhttps://orcid.org/0000-0002-0398-3992
local.identifier.orcidhttps://orcid.org/0000-0002-5778-7161
local.identifier.orcidhttps://orcid.org/0000-0003-3868-9029
local.identifier.orcidhttps://orcid.org/0000-0003-3356-3312
local.identifier.orcidhttps://orcid.org/0000-0001-6820-0269
local.identifier.orcidhttps://orcid.org/0000-0003-0464-4754
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://iopscience.iop.org/article/10.1088/1361-6528/ab3732

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