Structural and vibrational studies of tunnel-like titanate nanoribbons with good ion exchange capacity

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dc.creatorFábio Lacerda Resende e Silva
dc.creatorAriete Righi
dc.date.accessioned2023-06-27T19:21:04Z
dc.date.accessioned2025-09-09T00:11:53Z
dc.date.available2023-06-27T19:21:04Z
dc.date.issued2017
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.sponsorshipFINEP - Financiadora de Estudos e Projetos, Financiadora de Estudos e Projetos
dc.identifier.doihttps://doi.org/10.1016/j.vibspec.2016.11.008
dc.identifier.issn0924-2031
dc.identifier.urihttps://hdl.handle.net/1843/55434
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofVibrational Spectroscopy
dc.rightsAcesso Restrito
dc.subjectEspectroscopia de Raman
dc.subjectNanofitas
dc.subject.otherPotassium titanate
dc.subject.otherRaman spectroscopy
dc.subject.otherNanoribbon
dc.titleStructural and vibrational studies of tunnel-like titanate nanoribbons with good ion exchange capacity
dc.typeArtigo de periódico
local.citation.epage82
local.citation.spage77
local.citation.volume88
local.description.resumoPotassium titanate nanoribbons were synthesized by hydrothermal method treating TiO2 anatase in KOH aqueous solution. Titanates with different contents of remnant potassium were produced by treating the precursor sample with HCl. After acid treatment, a solution of NaOH was used to wash the sample with less potassium in order to promote the H-Na exchange. The morphology of the nanoribbons has been confirmed by transmission electron microscopy and the ion exchange by atomic absorption spectroscopy. X-ray diffraction, infrared and Raman spectroscopies showed that the samples are octatitanates with the ion content depending on the acid/basic washing process. XRD patterns revealed a decrease in the interlayer distance during the K-H exchange, indicating that the hydrogen ions are located in interlayer space. This distance has an intermediate value in the sample with sodium. FT-IR and Raman measurements showed that the less energetic modes are more affected by interlayer ions, implying that displacements of interlayer ions are involved, while the more energetic ones are related to vibrations mainly involving the TiO6 octahedra.
local.identifier.orcidhttps://orcid.org/0000-0001-9719-4734
local.identifier.orcidhttps://orcid.org/0000-0001-8752-9609
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S0924203116301990

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