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Thermal ablation (TA) is known as an alternative therapy to surgery to treat tumors. However, TA-based therapy requires advanced approaches in order to prevent causing damage to healthy tissue around the tumor and selectively target the desired area. Nanoparticles are considered as a promising tool in biomedicine to fulfill these requirements. This study was carried out in order to analyze the effect of iron oxide nanoparticles on the temperature increment during radiofrequency ablation therapy of porcine liver. In addition, this research aimed to experimentally evaluate the impact of two solvents such as agarose and chitosan on the temperature change, when magnetic nanoparticles were dispersed in them. The iron oxide nanoparticles were synthesized by the solvothermal method demonstrating the magnetic properties by acting to the external magnetic field. To increase the local heat superparamagnetic nanoparticles (iron oxide magnetic nanoparticle (IONPs)) of the average size of 20 nm in size and the concentrations from 1 to 10 mg/mL of MNPs with a step size of 1 mg/mL were tested in 10 replicates for each concentration and solvent. Moreover, the temperature changes for dry liver, and 0 mg/mL concentration was checked for calibration and reference purposes. As a sensing system, advanced 16-FBG optical fiber sensors connected to an interrogator were employed allowing the temperature change to be monitored accurately in real time. A maximum temperature of about 142 °C was recorded by a 5 mg/mL concentration of iron oxide nanoparticles dispersed in the agarose solvent.
Zhannat Ashikbayeva; Arman Aitkulov; Alexey Wolf; Alexander Dostovalov; Aida Amantayeva; Aliya Kurbanova; Vassilis Inglezakis; Daniele Tosi. Investigation of Thermal Effects of Radiofrequency Ablation Mediated with Iron Oxide Nanoparticles Dispersed in Agarose and Chitosan Solvents. Applied Sciences 2021, 11, 2437 .
AMA StyleZhannat Ashikbayeva, Arman Aitkulov, Alexey Wolf, Alexander Dostovalov, Aida Amantayeva, Aliya Kurbanova, Vassilis Inglezakis, Daniele Tosi. Investigation of Thermal Effects of Radiofrequency Ablation Mediated with Iron Oxide Nanoparticles Dispersed in Agarose and Chitosan Solvents. Applied Sciences. 2021; 11 (5):2437.
Chicago/Turabian StyleZhannat Ashikbayeva; Arman Aitkulov; Alexey Wolf; Alexander Dostovalov; Aida Amantayeva; Aliya Kurbanova; Vassilis Inglezakis; Daniele Tosi. 2021. "Investigation of Thermal Effects of Radiofrequency Ablation Mediated with Iron Oxide Nanoparticles Dispersed in Agarose and Chitosan Solvents." Applied Sciences 11, no. 5: 2437.
In this study, magnetic Fe3O4 particles and Fe3O4-Ag0 nanocomposites were prepared by a facile and green method, fully characterized and used for the removal of Hg2+ from water. Characterizations showed that the Fe3O4 particles are quasi-spherical with an average diameter of 217 nm and metallic silver nanoparticles formed on the surface with a size of 23–41 nm. The initial Hg2+ removal rate was very fast followed by a slow increase and the maximum solid phase loading was 71.3 mg/g for the Fe3O4-Ag0 and 28 mg/g for the bare Fe3O4. The removal mechanism is complex, involving Hg2+ adsorption and reduction, Fe2+ and Ag0 oxidation accompanied with reactions of Cl− with Hg+ and Ag+. The facile and green synthesis process, the fast kinetics and high removal capacity and the possibility of magnetic separation make Fe3O4-Ag0 nanocomposites attractive materials for the removal of Hg2+ from water.
Vassilis Inglezakis; Aliya Kurbanova; Anara Molkenova; Antonis Zorpas; Timur Atabaev. Magnetic Fe3O4-Ag0 Nanocomposites for Effective Mercury Removal from Water. Sustainability 2020, 12, 5489 .
AMA StyleVassilis Inglezakis, Aliya Kurbanova, Anara Molkenova, Antonis Zorpas, Timur Atabaev. Magnetic Fe3O4-Ag0 Nanocomposites for Effective Mercury Removal from Water. Sustainability. 2020; 12 (13):5489.
Chicago/Turabian StyleVassilis Inglezakis; Aliya Kurbanova; Anara Molkenova; Antonis Zorpas; Timur Atabaev. 2020. "Magnetic Fe3O4-Ag0 Nanocomposites for Effective Mercury Removal from Water." Sustainability 12, no. 13: 5489.