Long-term colloidal stability of graphene oxide aqueous nanofluids

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dc.creatorJesús Andrés Nuncira Valencia
dc.creatorLuciana Moreira Seara
dc.creatorRubén Dario Sinisterra Millán
dc.creatorVinicius Caliman
dc.creatorGlaura Goulart Silva
dc.date.accessioned2023-03-14T18:45:37Z
dc.date.accessioned2025-09-09T01:23:56Z
dc.date.available2023-03-14T18:45:37Z
dc.date.issued2020
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.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1080/1536383X.2019.1695250
dc.identifier.issn1536-4046
dc.identifier.urihttps://hdl.handle.net/1843/50891
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofFullerenes, Nanotubes and Carbon Nanostructures
dc.rightsAcesso Restrito
dc.subjectEngenharia Química
dc.subjectNanotecnologia
dc.subjectMateriais nanoestruturados
dc.subjectÓxido de grafeno
dc.subjectMicrofluídica
dc.subject.otherGraphene oxide
dc.subject.otherColloidal stability
dc.subject.otherAqueous dispersions
dc.titleLong-term colloidal stability of graphene oxide aqueous nanofluids
dc.typeArtigo de periódico
local.citation.epage417
local.citation.issue5
local.citation.spage407
local.citation.volume28
local.description.resumoThe use of nanofluids for industrial applications depends on its stability during transport and use. In this work, we demonstrate that graphene oxide (GO)-based aqueous nanofluids can remaining stable for as many as 90 days. The structural and morphological analyses showed that the GO samples have an average thickness of two graphitic layers with interlayer spacing of 1 nm. The long-term colloidal stability of the nanofluids was monitored for 90 days using three different techniques: UV-vis, zeta potential (ζ) and DLS, which confirmed this stability. The observed ζ value (average of −64.8 ± 1.81 mV) at 200 ppm of GO is the highest negative value reported at pH = 4. The particle size distribution after 90 days of storage presented a major population with diameter of (530 ± 40) nm that represented 98% of the scattered light intensity.
local.identifier.orcidhttps://orcid.org/0000-0001-7656-1849
local.identifier.orcidhttps://orcid.org/0000-0002-3098-1562
local.identifier.orcidhttps://orcid.org/0000-0002-0308-0179
local.publisher.countryBrasil
local.publisher.departmentCMI - CENTRO DE MICROSCOPIA
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA QUÍMICA
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.tandfonline.com/doi/full/10.1080/1536383X.2019.1695250

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