Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Manifestation of Stoichiometry Deviation in Silica-Coated Magnetite Nanoparticles. / Stolyar, Sergey V. ; Yaroslavtsev, Roman N. ; Tyumentseva, Anna V. ; Komogortsev, Sergey V. ; Tyutrina, Ekaterina S. ; Saitova, Alina T. ; Gerasimova , Yulia V. ; Velikanov , Dmitriy A. ; Rautskii, Michael V. ; Iskhakov, Rauf S. .
в: Journal of Physical Chemistry C, Том 126, № 17, 05.05.2022, стр. 7510-7516.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Manifestation of Stoichiometry Deviation in Silica-Coated Magnetite Nanoparticles
AU - Stolyar, Sergey V.
AU - Yaroslavtsev, Roman N.
AU - Tyumentseva, Anna V.
AU - Komogortsev, Sergey V.
AU - Tyutrina, Ekaterina S.
AU - Saitova, Alina T.
AU - Gerasimova , Yulia V.
AU - Velikanov , Dmitriy A.
AU - Rautskii, Michael V.
AU - Iskhakov, Rauf S.
N1 - Publisher Copyright: © 2022 American Chemical Society. All rights reserved.
PY - 2022/5/5
Y1 - 2022/5/5
N2 - Iron oxide nanoparticles were synthesized by the coprecipitation method. Two varying Fe 3O 4/tetraethoxysilane ratios were used for silanization: 1:1.3 and 1:4.5. The samples were investigated using transmission electron microscopy, ferromagnetic resonance, IR spectroscopy, and magnetometry. Magnetic measurements have shown that the magnetite core in nanoparticles has a higher magnetization than stoichiometric magnetite nanoparticles of the same size. The increased magnetization was caused by the deviation of the magnetite stoichiometry due to the interaction with the silicate coating. The blocking temperature distribution was determined from the temperature dependence of the coercive force and from the ZFC/FC dependencies. Nanoparticles with a thicker shell have shown greater efficiency in DNA isolation.
AB - Iron oxide nanoparticles were synthesized by the coprecipitation method. Two varying Fe 3O 4/tetraethoxysilane ratios were used for silanization: 1:1.3 and 1:4.5. The samples were investigated using transmission electron microscopy, ferromagnetic resonance, IR spectroscopy, and magnetometry. Magnetic measurements have shown that the magnetite core in nanoparticles has a higher magnetization than stoichiometric magnetite nanoparticles of the same size. The increased magnetization was caused by the deviation of the magnetite stoichiometry due to the interaction with the silicate coating. The blocking temperature distribution was determined from the temperature dependence of the coercive force and from the ZFC/FC dependencies. Nanoparticles with a thicker shell have shown greater efficiency in DNA isolation.
UR - http://www.scopus.com/inward/record.url?scp=85129307908&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.2c00349
DO - 10.1021/acs.jpcc.2c00349
M3 - Article
VL - 126
SP - 7510
EP - 7516
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 17
ER -
ID: 94488559