TY  - JOUR
AU  - Tadić, Marin
AU  - Panjan, Matjaž
AU  - Lalatone, Yoann
AU  - Milošević, Irena
AU  - Vučetić Tadić, Biljana
AU  - Lazović, Jelena
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10477
AB  - We investigate synthesis, phase evolution, hollow and porous structure and magnetic properties of quasi-amorphous intermediate phase (QUAIPH) and hematite (α-Fe2O3) nanostructure synthesized by annealing of akaganeite (β-FeOOH) nanorods. It is found that the annealing temperature determines the phase composition of the products, the crystal structure/size dictates the magnetic properties whereas the final nanorod morphology is determined by the starting material. Annealing of β-FeOOH at ∼300 °C resulted in the formation of hollow QUAIPH nanorods. The synthesized material shows low-cytotoxicity, superparamagnetism and good transverse relaxivity, which is rarely reported for QUAIPH. The QUAIPH nanorods started to transform to porous hematite nanostructures at ∼350 °C and phase transformation was completed at 600 °C. During the annealing, the crystal structure changed from monoclinic (akaganeite) to quasi-amorphous and rhombohedral (hematite). Unusually, the crystallite size first decreased (akaganeite → QUAIPH) and then increased (QUAIPH → hematite) during annealing whereas the nanorods retained particle shape. The magnetic properties of the samples changed from antiferromagnetic (akaganeite) to superparamagnetic with blocking temperature TB = 84 K (QUAIPH) and finally to weak-ferromagnetic with the Morin transition at TM = 244 K and high coercivity HC = 1652 Oe (hematite). The low-cytotoxicity and MRI relaxivity (r2 = 5.80 mM−1 s−1 (akaganeite), r2 = 4.31 mM−1 s−1 (QUAIPH) and r2 = 5.17 mM−1 s−1 (hematite)) reveal potential for biomedical applications.
T2  - Advanced Powder Technology
T1  - Magnetic properties, phase evolution, hollow structure and biomedical application of hematite (α-Fe2O3) and QUAIPH
VL  - 33
IS  - 12
SP  - 103847
DO  - 10.1016/j.apt.2022.103847
ER  - 

@article{
author = "Tadić, Marin and Panjan, Matjaž and Lalatone, Yoann and Milošević, Irena and Vučetić Tadić, Biljana and Lazović, Jelena",
year = "2022",
abstract = "We investigate synthesis, phase evolution, hollow and porous structure and magnetic properties of quasi-amorphous intermediate phase (QUAIPH) and hematite (α-Fe2O3) nanostructure synthesized by annealing of akaganeite (β-FeOOH) nanorods. It is found that the annealing temperature determines the phase composition of the products, the crystal structure/size dictates the magnetic properties whereas the final nanorod morphology is determined by the starting material. Annealing of β-FeOOH at ∼300 °C resulted in the formation of hollow QUAIPH nanorods. The synthesized material shows low-cytotoxicity, superparamagnetism and good transverse relaxivity, which is rarely reported for QUAIPH. The QUAIPH nanorods started to transform to porous hematite nanostructures at ∼350 °C and phase transformation was completed at 600 °C. During the annealing, the crystal structure changed from monoclinic (akaganeite) to quasi-amorphous and rhombohedral (hematite). Unusually, the crystallite size first decreased (akaganeite → QUAIPH) and then increased (QUAIPH → hematite) during annealing whereas the nanorods retained particle shape. The magnetic properties of the samples changed from antiferromagnetic (akaganeite) to superparamagnetic with blocking temperature TB = 84 K (QUAIPH) and finally to weak-ferromagnetic with the Morin transition at TM = 244 K and high coercivity HC = 1652 Oe (hematite). The low-cytotoxicity and MRI relaxivity (r2 = 5.80 mM−1 s−1 (akaganeite), r2 = 4.31 mM−1 s−1 (QUAIPH) and r2 = 5.17 mM−1 s−1 (hematite)) reveal potential for biomedical applications.",
journal = "Advanced Powder Technology",
title = "Magnetic properties, phase evolution, hollow structure and biomedical application of hematite (α-Fe2O3) and QUAIPH",
volume = "33",
number = "12",
pages = "103847",
doi = "10.1016/j.apt.2022.103847"
}

Tadić, M., Panjan, M., Lalatone, Y., Milošević, I., Vučetić Tadić, B.,& Lazović, J.. (2022). Magnetic properties, phase evolution, hollow structure and biomedical application of hematite (α-Fe2O3) and QUAIPH. in Advanced Powder Technology, 33(12), 103847.
https://doi.org/10.1016/j.apt.2022.103847

Tadić M, Panjan M, Lalatone Y, Milošević I, Vučetić Tadić B, Lazović J. Magnetic properties, phase evolution, hollow structure and biomedical application of hematite (α-Fe2O3) and QUAIPH. in Advanced Powder Technology. 2022;33(12):103847.
doi:10.1016/j.apt.2022.103847 .

Tadić, Marin, Panjan, Matjaž, Lalatone, Yoann, Milošević, Irena, Vučetić Tadić, Biljana, Lazović, Jelena, "Magnetic properties, phase evolution, hollow structure and biomedical application of hematite (α-Fe2O3) and QUAIPH" in Advanced Powder Technology, 33, no. 12 (2022):103847,
https://doi.org/10.1016/j.apt.2022.103847 . .