Concentration dependent thermal properties of magnetic nanoparticles and ability to use in the magnetic hyperthermia treatment

Abstract

In this investigation, specimens of magnetic nanoparticles (MNPs) consisting of Fe2O3, Fe3O4, and CoFe2O4 were synthesized in a powdered state through the co-precipitation technique. X-ray diffraction was employed for the purpose of characterizing the dimensions of the sample, yielding the following measurements: t = 64, 10, and 13 nm, respectively. Subsequently, a series of suspensions (S1, S5, S10, S15, and S20) were prepared by introducing varying amounts (x = 1, 5, 10, 15, and 20 mg) of magnetic nanoparticles into 1 ml of distilled water. A low-frequency induction heater was employed to investigate the thermal characteristics of the aforementioned MNPs. The experimental findings indicate that as the concentration of MNPs in the suspension increases, there is a corresponding decrease in the maximum temperature (Tmax) measured in degrees Celsius, the heating rate (∆T/∆t) measured in degrees Celsius per second, and the specific absorption rate measured in watts per gram. Furthermore, the conducted investigation has elucidated that these MNPs exhibit commendable thermal characteristics, thereby signifying their potential utility in the realm of magnetic hyperthermia treatment.