Green exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applications
We 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 comprehen...
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| Language: | English |
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Elsevier
2025-07-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525005969 |
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| author | J.P. Caland A.O. Da Silva J.F.R. Marroquin M.H. Sousa B.S. Archanjo P. Karagiannidis J.F. Felix |
| author_facet | J.P. Caland A.O. Da Silva J.F.R. Marroquin M.H. Sousa B.S. Archanjo P. Karagiannidis J.F. Felix |
| author_sort | J.P. Caland |
| collection | DOAJ |
| description | We 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. |
| format | Article |
| id | doaj-art-44dd1cf9b6c946b1a4c856d5e7fb1d9d |
| institution | DOAJ |
| issn | 0264-1275 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-44dd1cf9b6c946b1a4c856d5e7fb1d9d2025-08-20T03:22:04ZengElsevierMaterials & Design0264-12752025-07-0125511417610.1016/j.matdes.2025.114176Green exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applicationsJ.P. Caland0A.O. Da Silva1J.F.R. Marroquin2M.H. Sousa3B.S. Archanjo4P. Karagiannidis5J.F. Felix6Institute of Physics, Laboratory of Interfaces and Nanodevices in Semiconductors – LabINS, University of Brasília, Brasília-DF 70910-900, BrazilGreen Nanotechnology Group, University of Brasília, Ceilândia- DF 72220-275, BrazilInstitute of Physics, Laboratory of Interfaces and Nanodevices in Semiconductors – LabINS, University of Brasília, Brasília-DF 70910-900, BrazilGreen Nanotechnology Group, University of Brasília, Ceilândia- DF 72220-275, BrazilMaterials Metrology Division, National Institute of Metrology, Quality and Technology, Duque de Caxias, Rio de Janeiro 25250-020, BrazilSchool of Computer Science and Engineering, Faculty of Business and Technology, University of Sunderland, Sunderland SR6 0DD, United KingdomInstitute of Physics, Laboratory of Interfaces and Nanodevices in Semiconductors – LabINS, University of Brasília, Brasília-DF 70910-900, Brazil; Corresponding author.We 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.http://www.sciencedirect.com/science/article/pii/S0264127525005969NanocompositeTransition Metal Dichalcogenides (TMDs)GrapheneSuperparamagneticMagnetic hyperthermia |
| spellingShingle | J.P. Caland A.O. Da Silva J.F.R. Marroquin M.H. Sousa B.S. Archanjo P. Karagiannidis J.F. Felix Green exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applications Materials & Design Nanocomposite Transition Metal Dichalcogenides (TMDs) Graphene Superparamagnetic Magnetic hyperthermia |
| title | Green exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applications |
| title_full | Green exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applications |
| title_fullStr | Green exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applications |
| title_full_unstemmed | Green exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applications |
| title_short | Green exfoliation of van der Waals–based magnetic nanocomposites for hyperthermia applications |
| title_sort | green exfoliation of van der waals based magnetic nanocomposites for hyperthermia applications |
| topic | Nanocomposite Transition Metal Dichalcogenides (TMDs) Graphene Superparamagnetic Magnetic hyperthermia |
| url | http://www.sciencedirect.com/science/article/pii/S0264127525005969 |
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