resumo
The size of magnetic nanoparticles is a crucial factor that directly impacts their effectiveness in nanomedicine applications, particularly in magnetic hyperthermia. In this study, we developed a novel coprecipitation method to precisely tune the size of Mn-ferrite (MnFe2O4) nanoparticles by adjusting the ratio between two bases: the organic 1-amino-2-propanol (MIPA) and the inorganic NaOH, under pH 12 conditions. High-resolution transmission electron microscopy and X-ray diffraction analysis revealed that by varying the MIPA volume percentage (x = 0, 25, 50, 75, and 100 %) we successfully controlled the size of Mn-ferrite nanoparticles from 24 nm down to 3 nm. This novel coprecipitation method for controlling magnetic ferrite nanoparticle size serves as a proof of concept, offering a promising alternative for developing ferrite nano- particles in applications where precise size control is essential.
palavras-chave
IRON-OXIDE NANOPARTICLES; MAGNETIC NANOPARTICLES; MANGANESE; TEMPERATURE
categoria
Materials Science; Physics
autores
Horta, AC; Pocas, A; Amaral, JS; Amorim, CO
nossos autores
Carlos Amorim
Investigador Auxiliar
João Cunha de Sequeira Amaral
Investigador AuxiliarGrupos
G2 - Materiais Fotónicos, Eletrónicos e Magnéticos
G6 - Materiais Virtuais e Inteligência Artificial
Projectos
Collaboratory for Emerging Technologies, CoLab (EMERGING TECHNOLOGIES)
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
agradecimentos
This work is financed by Portugal 2020 through European Regional Development Fund (ERDF) in the frame of CENTRO2020 in the scope of the project CICECO - Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020 & LA/P/0006/2020, and in the scope of LISBOA-01-0247-FEDER-039985/POCI-01-0247-FEDER-039985, LA/P/0037/2020, UIDP/50025/2020, and UIDB/50025/2020 of the Associate Laboratory Institute of Nanostructures, Nanomodelling and Nanofabrication - i3N,financed by national funds through the FCT/MEC (PIDDAC) . FCT is also acknowledged for grant 2020.05415.BD (A. C. Horta) .