Magnetic properties of mesoporous hematite/alumina nanocomposite and evaluation for biomedical applications
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2021
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A porous hematite/alumina nanocomposite is produced by sol-gel combustion synthesis. The XRPD, Raman and FTIR methods show the presence of α-Fe2O3 phase while SEM, TEM, EDS and BET techniques further reveal the formation of porous ellipsoid-like nanostructure of hematite nanoparticles coated by amorphous alumina. Hematite nanoparticles have a size of ~40 nm whereas the porous hematite/alumina nanocomposite particles are ~100 nm in size with characteristic pores of ~7 nm. The M(H) at 300 K exhibits coercivity HC = 293 Oe and magnetization MS = 2.71 emu/g and at 5 K HC = 1150 Oe and MS = 9.25 emu/g. The M(T) under H = 100 Oe shows a bifurcation between ZFC/FC magnetization curves at all measurement temperatures Tirr>350 K (irreversibility temperature) and blocking temperature at TB ~ 305 K. Unexpectedly, the M(T) measurements under H = 10 kOe reveal the suppressed Morin transition at TM = 225 K. The analysis of the results and data from the literature reveal that the porous surface struc...ture of hematite induces the atypical magnetic properties. A magnetic resonance imaging (MRI) properties show the transverse relaxivity rate (r2) of 0.44 mM−1s−1 at 7 T and 1.06 mM−1s−1 at 15.2 T. The investigated nanocomposite particles could be useful in biomedical applications due to their low cytotoxicity and porous nanostructure.
Ključne reči:
Cytotoxicity / Hematite (α-FeO) / Iron oxide / Morin transition / Surface effects / SynthesisIzvor:
Ceramics International, 2021Finansiranje / projekti:
- Ministry of Education, Science and Technological Development of the Republic of Serbia
- Slovenian Research Agency [ARRS P2-0089, J2-3043, J2- 3040, J2-3046]
- erbian-Austrian bilateral project [451- 03-02141/2017–09/10 (2018–2021) WTZ SRB 27/201]
DOI: 10.1016/j.ceramint.2021.12.209
ISSN: 0272-8842
WoS: 000772634600004
Scopus: 2-s2.0-85121768805
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Tadić, Marin AU - Panjan, Matjaž AU - Vučetić Tadić, Biljana AU - Kralj, Slavko AU - Lazović, Jelena PY - 2021 UR - https://vinar.vin.bg.ac.rs/handle/123456789/10102 AB - A porous hematite/alumina nanocomposite is produced by sol-gel combustion synthesis. The XRPD, Raman and FTIR methods show the presence of α-Fe2O3 phase while SEM, TEM, EDS and BET techniques further reveal the formation of porous ellipsoid-like nanostructure of hematite nanoparticles coated by amorphous alumina. Hematite nanoparticles have a size of ~40 nm whereas the porous hematite/alumina nanocomposite particles are ~100 nm in size with characteristic pores of ~7 nm. The M(H) at 300 K exhibits coercivity HC = 293 Oe and magnetization MS = 2.71 emu/g and at 5 K HC = 1150 Oe and MS = 9.25 emu/g. The M(T) under H = 100 Oe shows a bifurcation between ZFC/FC magnetization curves at all measurement temperatures Tirr>350 K (irreversibility temperature) and blocking temperature at TB ~ 305 K. Unexpectedly, the M(T) measurements under H = 10 kOe reveal the suppressed Morin transition at TM = 225 K. The analysis of the results and data from the literature reveal that the porous surface structure of hematite induces the atypical magnetic properties. A magnetic resonance imaging (MRI) properties show the transverse relaxivity rate (r2) of 0.44 mM−1s−1 at 7 T and 1.06 mM−1s−1 at 15.2 T. The investigated nanocomposite particles could be useful in biomedical applications due to their low cytotoxicity and porous nanostructure. T2 - Ceramics International T1 - Magnetic properties of mesoporous hematite/alumina nanocomposite and evaluation for biomedical applications DO - 10.1016/j.ceramint.2021.12.209 ER -
@article{ author = "Tadić, Marin and Panjan, Matjaž and Vučetić Tadić, Biljana and Kralj, Slavko and Lazović, Jelena", year = "2021", abstract = "A porous hematite/alumina nanocomposite is produced by sol-gel combustion synthesis. The XRPD, Raman and FTIR methods show the presence of α-Fe2O3 phase while SEM, TEM, EDS and BET techniques further reveal the formation of porous ellipsoid-like nanostructure of hematite nanoparticles coated by amorphous alumina. Hematite nanoparticles have a size of ~40 nm whereas the porous hematite/alumina nanocomposite particles are ~100 nm in size with characteristic pores of ~7 nm. The M(H) at 300 K exhibits coercivity HC = 293 Oe and magnetization MS = 2.71 emu/g and at 5 K HC = 1150 Oe and MS = 9.25 emu/g. The M(T) under H = 100 Oe shows a bifurcation between ZFC/FC magnetization curves at all measurement temperatures Tirr>350 K (irreversibility temperature) and blocking temperature at TB ~ 305 K. Unexpectedly, the M(T) measurements under H = 10 kOe reveal the suppressed Morin transition at TM = 225 K. The analysis of the results and data from the literature reveal that the porous surface structure of hematite induces the atypical magnetic properties. A magnetic resonance imaging (MRI) properties show the transverse relaxivity rate (r2) of 0.44 mM−1s−1 at 7 T and 1.06 mM−1s−1 at 15.2 T. The investigated nanocomposite particles could be useful in biomedical applications due to their low cytotoxicity and porous nanostructure.", journal = "Ceramics International", title = "Magnetic properties of mesoporous hematite/alumina nanocomposite and evaluation for biomedical applications", doi = "10.1016/j.ceramint.2021.12.209" }
Tadić, M., Panjan, M., Vučetić Tadić, B., Kralj, S.,& Lazović, J.. (2021). Magnetic properties of mesoporous hematite/alumina nanocomposite and evaluation for biomedical applications. in Ceramics International. https://doi.org/10.1016/j.ceramint.2021.12.209
Tadić M, Panjan M, Vučetić Tadić B, Kralj S, Lazović J. Magnetic properties of mesoporous hematite/alumina nanocomposite and evaluation for biomedical applications. in Ceramics International. 2021;. doi:10.1016/j.ceramint.2021.12.209 .
Tadić, Marin, Panjan, Matjaž, Vučetić Tadić, Biljana, Kralj, Slavko, Lazović, Jelena, "Magnetic properties of mesoporous hematite/alumina nanocomposite and evaluation for biomedical applications" in Ceramics International (2021), https://doi.org/10.1016/j.ceramint.2021.12.209 . .