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dc.contributor.authorCaland, Juliani Penha-
dc.contributor.authorSilva, Atailson Oliveira da-
dc.contributor.authorMarroquin, John Fredy Ricardo-
dc.contributor.authorSousa, Marcelo Henrique-
dc.contributor.authorArchanjo, Bráulio Soares-
dc.contributor.authorKaragiannidis, Panagiotis G.-
dc.contributor.authorFelix, Jorlandio Francisco-
dc.date.accessioned2025-11-25T15:51:54Z-
dc.date.available2025-11-25T15:51:54Z-
dc.date.issued2025-06-05-
dc.identifier.citationCALAND, Juliani Penha et al. Green exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applications. Materials & Design, v. 255, e114176, 2025. DOI: https://doi.org/10.1016/j.matdes.2025.114176. Disponível em: https://www.sciencedirect.com/science/article/pii/S0264127525005969?via%3Dihub. Acesso em: 25 nov. 2025.pt_BR
dc.identifier.urihttp://repositorio.unb.br/handle/10482/53256-
dc.language.isoengpt_BR
dc.publisherElsevierpt_BR
dc.rightsAcesso Abertopt_BR
dc.titleGreen exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applicationspt_BR
dc.typeArtigopt_BR
dc.subject.keywordNanocompósitos magnéticospt_BR
dc.subject.keywordMagnetohipertermiapt_BR
dc.subject.keywordDicalcogenetos de metais de transiçãopt_BR
dc.subject.keywordGrafenopt_BR
dc.subject.keywordMateriais Van der Waals (vdW)pt_BR
dc.subject.keywordNanopartículas de maghemitapt_BR
dc.rights.licenseThis is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.matdes.2025.114176pt_BR
dc.description.abstract1We present the development of novel nanocomposites consisting of van der Waals (vdW) materials (WS2, MoS2, MoSe2, TiS2, and graphene), maghemite nanoparticles (MNPs), and a gum arabic (GA) matrix, optimized for magnetic hyperthermia applications. These superparamagnetic nanocomposites were comprehensively investigated using a range of advanced characterization techniques. It was found that the incorporation of MNPs enhances the exfoliation efficiency of vdW materials. Transmission electron microscopy revealed that the MNPs, with an average diameter of 〈DTEM〉 = 8.3 ± 0.1 nm, are nearly spherical and uniformly anchored on the surfaces of the vdW material flakes. Raman spectroscopy confirmed the presence of characteristic 2D material signatures and verified the formation of magnetic nanocomposites with varying layer numbers. Zeta potential measurements indicated high colloidal stability, which is essential for biomedical applications. Magnetic measurements confirmed the superparamagnetic nature of the vdW-integrated nanocomposites, showing reduced saturation magnetization, increased coercivity, and a shifted blocking temperature due to dipole–dipole interactions influenced by the presence of vdW materials. The highest specific absorption rate (SAR) values recorded were 21.4 W/g for Graphene@GA@MNPs, 20.6 W/g for WS2@GA@MNPs, and 23.3 W/g for TiS2@GA@MNPs. Magnetic hyperthermia tests demonstrated efficient heat generation under alternating magnetic fields, reinforcing their potential for biomedical applications.pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2740-4286pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7434-6491pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-1969-452Xpt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-1210-8329pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-8145-7712pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-2709-4161pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0986-1854pt_BR
dc.contributor.affiliationUniversity of Brasília, Institute of Physics, Laboratory of Interfaces and Nanodevices in Semiconductorspt_BR
dc.contributor.affiliationUniversity of Brasília, Green Nanotechnology Grouppt_BR
dc.contributor.affiliationUniversity of Brasília, Institute of Physics, Laboratory of Interfaces and Nanodevices in Semiconductorspt_BR
dc.contributor.affiliationUniversity of Brasília, Green Nanotechnology Grouppt_BR
dc.contributor.affiliationNational Institute of Metrology, Quality and Technology, Materials Metrology Divisionpt_BR
dc.contributor.affiliationUniversity of Sunderland, Faculty of Business and Technology, School of Computer Science and Engineeringpt_BR
dc.contributor.affiliationUniversity of Brasília, Institute of Physics, Laboratory of Interfaces and Nanodevices in Semiconductorspt_BR
dc.description.unidadeInstituto de Física (IF)pt_BR
dc.description.unidadeInstituto de Ciências Biológicas (IB)pt_BR
dc.description.unidadeDepartamento de Genética e Morfologia (IB GEM)pt_BR
dc.description.ppgPrograma de Pós-Graduação em Físicapt_BR
dc.description.ppgPrograma de Pós-Graduação em Nanociência e Nanobiotecnologiapt_BR
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