Synthesis of magnetite nanoparticles coated with polyvinyl alcohol for hyperthermia application

Abstract One of the main challenges in hyperthermia treatment is how to improve heating performance nanoparticles with high specific loss power (SLP). To tackle this challenge, magnetite (MNPs) and coated polyvinyl alcohol (PVA@MNPs) were fabricated via ultrasonic-assisted coprecipitation technique. The obtained characterized by using FT-IR, TEM, TGA, XRD, ICP-OES, DLS, zeta potential, VSM UV–Vis spectroscopy. self-heating properties MNPs PVA@MNPs studied under alternating magnetic strength, frequency induction time. showed that have a nearly spherical shape ranging between 12.3 ± 3.2 10 2.5 nm, respectively. higher value potentials (? 11.49 mV) implies nanoparticle may show good stability aqueous solutions. magnetization saturation values 41.98 45.08 emu g ?1 for PVA@MNPs, prepared small coercivity remanence due soft nature nanoparticles. highest SLP was 163.81 W while lowest 4.84 same field condition. presence PVA shell improved particle PVA@ MNPs. This successfully caused an improvement as well. These features make study applicable hyperthermic agents biomedical applications.