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http://hdl.handle.net/10773/19437
Title: | Gelatine-assisted synthesis of magnetite nanoparticles for magnetic hyperthermia |
Author: | Alves, Andre F. Mendo, Sofia G. Ferreira, Liliana P. Mendonca, Maria Helena Ferreira, Paula Godinho, Margarida Cruz, Maria Margarida Carvalho, Maria Deus |
Keywords: | IRON-OXIDE NANOPARTICLES COPRECIPITATION SYNTHESIS ROOM-TEMPERATURE POWER ABSORPTION SIZE FUNCTIONALIZATION RELAXATION CHLORIDE SHAPE |
Issue Date: | 2016 |
Publisher: | SPRINGER |
Abstract: | Magnetite nanoparticles were synthesized by the co-precipitation method exploring the use of gelatine and agar as additives. For comparison, magnetite nanoparticles were also prepared by standard co-precipitation, by co-precipitation with the addition of a surfactant (sodium dodecyl sulphate) and by the thermal decomposition method. The structure and morphology of the synthesized nanoparticles were investigated by powder X-ray diffraction and transmission electron microscopy. Their magnetic properties were studied by SQUID magnetometry and Fe-57 Mossbauer spectroscopy. The nanoparticles potential for applications in magnetic hyperthermia was evaluated through heating efficiency under alternating magnetic field. The results show that all synthesis methods produce Fe3-xO4 nanoparticles with similar sizes. The nanoparticles synthesized in the gelatine medium display the narrowest particle size distribution, the lowest oxidation degree, one of the highest saturation magnetization values and the best hyperthermia efficiency, proving that this gelatine-assisted synthesis is an efficient, environmental friendly, and low-cost method to produce magnetite nanoparticles. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19437 |
DOI: | 10.1007/s11051-016-3327-z |
ISSN: | 1388-0764 |
Publisher Version: | 10.1007/s11051-016-3327-z |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Gelatine-assisted synthesis of magnetite nanoparticles for magnetic hyperthermia_10.1007s11051-016-3327-z.pdf | 3.07 MB | Adobe PDF |
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