Gelatine-assisted synthesis of magnetite nanoparticles for magnetic hyperthermia
authors Alves, AF; Mendo, SG; Ferreira, LP; Mendonca, MH; Ferreira, P; Godinho, M; Cruz, MM; Carvalho, MD
nationality International
journal JOURNAL OF NANOPARTICLE RESEARCH
author keywords Magnetite nanoparticles; Synthesis in gelatine medium; Magnetic hyperthermia; Biomedical applications
keywords IRON-OXIDE NANOPARTICLES; COPRECIPITATION SYNTHESIS; ROOM-TEMPERATURE; POWER ABSORPTION; SIZE; FUNCTIONALIZATION; RELAXATION; CHLORIDE; SHAPE
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.
publisher SPRINGER
issn 1388-0764
year published 2016
volume 18
issue 1
digital object identifier (doi) 10.1007/s11051-016-3327-z
web of science category Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000370149900004
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journal impact factor 2.132
5 year journal impact factor 2.173
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