Microwave-assisted synthesis of polyacrylamide-aminated graphene oxide hybrid hydrogel with improved adsorption properties

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dc.creatorMarcelo Machado Viana
dc.creatorSthéfany Zaida Silva do Amparo
dc.creatorMeiriane Cristina Faria Soares Lima
dc.creatorRaquel Cristina Fonseca Gonçalves Lopes
dc.creatorCláudia Karina Barbosa de Vasconcelos
dc.creatorVinicius Caliman
dc.creatorGlaura Goulart Silva
dc.date.accessioned2023-03-14T19:28:53Z
dc.date.accessioned2025-09-08T23:07:13Z
dc.date.available2023-03-14T19:28:53Z
dc.date.issued2020-10
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.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1016/j.jece.2020.104415
dc.identifier.issn2213-3437
dc.identifier.urihttps://hdl.handle.net/1843/50893
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Environmental Chemical Engineering
dc.rightsAcesso Restrito
dc.subjectEngenharia Química
dc.subjectNanotecnologia
dc.subjectMateriais nanoestruturados
dc.subjectPoliacrilamida
dc.subjectÓxido de grafeno
dc.subjectSíntese inorgânica
dc.subjectAdsorção
dc.subjectPolimerização
dc.subjectColoides
dc.subject.otherPolyacrylamide
dc.subject.otherGraphene oxide
dc.subject.otherDyes
dc.subject.otherHydrogel
dc.subject.otherMicrowave synthesis
dc.titleMicrowave-assisted synthesis of polyacrylamide-aminated graphene oxide hybrid hydrogel with improved adsorption properties
dc.typeArtigo de periódico
local.citation.issue5
local.citation.volume8
local.description.resumoFew layers graphene oxide (GO), graphene oxide functionalized with diethylenetriamine (GO-DETA) and the hybrid of graphene oxide-diethylenetriamine and polyacrylamide (GO-DETA/PAM) hydrogel with high adsorption of methylene blue were prepared using microwave-assisted methods. TGA and XPS analysis were performed to confirm DETA molecules incorporation on GO and to identify an in-situ acrylamide polymerization with no usual chemical cross-linkers. The morphology and structure of the graphene derivative materials and hybrid gel were evaluated by TEM and SEM images. The obtained GO-DETA sheets played an important role as a cross-linker agent during the polymerization of PAM to form the hybrid GO-DETA/PAM. The results obtained showed that the GO-DETA influenced the swelling behavior and thermal properties of PAM, as well as improved its Tg, presenting a more stable PAM network in saline conditions. The hybrid hydrogel significantly improved the capacity to adsorb methylene blue (maximum adsorption capacity 205.4 mg g−¹), compared to the neat PAM (maximum adsorption capacity 51.5 mg g−¹). This feature demonstrates how this novel material can be used in the removal of emerging contaminants in water, for example, using a fast and reproducible synthetic method and lower quantities of adsorbent.
local.identifier.orcidhttps://orcid.org/0000-0002-6682-2504
local.identifier.orcidhttps://orcid.org/0000-0002-8982-8415
local.identifier.orcidhttps://orcid.org/0000-0002-3239-6172
local.identifier.orcidhttps://orcid.org/0000-0001-8687-120X
local.identifier.orcidhttps://orcid.org/0000-0002-8675-2996
local.identifier.orcidhttps://orcid.org/0000-0002-3098-1562
local.identifier.orcidhttps://orcid.org/0000-0002-0308-0179
local.publisher.countryBrasil
local.publisher.departmentCOLTEC - COLEGIO TECNICO
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S2213343720307648

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