Preparation of magnetic fluids based on La0.80Ag0.15MnO3-δ nanoparticles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0197896" target="_blank" >RIV/00216305:26620/26:0197896 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0927775725002018?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0927775725002018?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.colsurfa.2025.136300" target="_blank" >10.1016/j.colsurfa.2025.136300</a>

Result language

angličtina

Original language name

Preparation of magnetic fluids based on La0.80Ag0.15MnO3-δ nanoparticles

Original language description

Water-based magnetic fluids were prepared using La0.80Ag0.15MnO3-delta magnetic carriers with the maximal Curie temperature TC = 319.5 K (46.4 degrees C). The starting nanoparticles mainly consisted from agglomerates with average particle size between 43 and 47 nm. Separation of nanoparticles from aggregates using a stirred ball mill in combination with the use of anionic sodium dodecyl sulphate surfactant led to the preparation of electrostatically stabilised magnetic fluid with average hydrodynamic size of particles xav less than 75 nm. A combination of mechanical grinding, sonication and etching in different acids was used to prepare Dextran 40 kDa sterically and carboxymethyl-dextran 15 kDa electrosterically stabilised magnetic fluid with average hydrodynamic size of particles ranging between 50 and 190 nm. Milling and etching results in reduction of TC of about 3 K, etching causes a drastic decrease in saturation magnetization, but the magnetocaloric properties are unaffected by the preparation of the magnetic fluid, only the magnetic entropy change is reduced by three orders of magnitude. Magnetic carrier has the potential to reach the desired magnetic heating temperature T = 43.6 degrees C for applications in hyperthermia and magnetic fluids are capable to reach T = 38.1 degrees C by magnetic heating. The maximal specific absorption rate of magnetic carrier SAR = 134.7 W/g and in the case of magnetic fluid SAR = 41.9 W/g. The synthesized nanoparticles and the prepared magnetic fluids may represent materials with potential in cancer treatment, as the most pronounced effect was observed in the case of lung cancer cell line A549. Analysed nanoparticles induced a decrease in metabolic activity even at relatively low concentrations.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

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Continuities

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Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Colloids and surfaces. A, Physicochemical and engineering aspects

ISSN

0927-7757

e-ISSN

1873-4359

Volume of the periodical

711

Issue of the periodical within the volume

136300

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

15

Pages from-to

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UT code for WoS article

001426082300001

EID of the result in the Scopus database

2-s2.0-85217078447