Titania-coated manganite nanoparticles: synthesis of the shell, characterization and MRI properties

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023001%3A_____%2F17%3A00060159" target="_blank" >RIV/00023001:_____/17:00060159 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/17:00473952 RIV/68378041:_____/17:00473952
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0304885316326804?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0304885316326804?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmmm.2016.10.097" target="_blank" >10.1016/j.jmmm.2016.10.097</a>

Result language
angličtina
Original language name
Titania-coated manganite nanoparticles: synthesis of the shell, characterization and MRI properties
Original language description
Novel procedure for coating of oxide nanoparticles with titania, employing hydrolysis and polycondensation of titanium alkoxides under high-dilution conditions and cationic surfactants, is developed and applied to magnetic cores of perovskite manganite. Bare particles of the ferromagnetic La0.65Sr0.35MnO3 phase, possessing high magnetization, M10 kOe(4.5 K) = 63.5 emu g−1, and Curie temperature, TC = 355 K, are synthesized by solgel procedure and subsequently coated with titania. Further, a comparative silica-coated product is prepared. In order to analyse the morphology, colloidal stability, and surface properties of these two types of coated particles, a detailed study by means of transmission electron microscopy, dynamic light scattering, zeta-potential measurements, and IR spectroscopy is carried out. The experiments on the titania-coated sample reveal a continuous though porous character of the TiO2 shell, the nature of which is amorphous but can be transformed to anatase at higher temperatures. Finally, the relaxometric study at the magnetic field of 0.5 T, performed to quantity the transverse relaxivity and its temperature dependence, reveals important differences between the titania-coated and silica-coated nanoparticles.
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
30224 - Radiology, nuclear medicine and medical imaging

Project
<a href="/en/project/GA16-04340S" target="_blank" >GA16-04340S: Oxide nanomagnets, their properties and interactions with biological systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)