Influence of temperature and stirring on the synthesis of magnetite nanoparticles

Abstract

This study investigates the impact of temperature variations and stirring methods on the synthesis of magnetite nanoparticles. Conducted experiments employed a controlled precipitation method, with temperature ranges from 22 °C to 60 °C and four stirring methods, including magnetic stirring, sonication, vertical stirring, and vertical stirring combined with an ultrasonic bath. The synthesized nanoparticles were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and UV–Vis spectrophotometry. Results revealed significant influences of temperature and stirring on magnetite nanoparticles’ size, crystallinity, and optical properties. Elevated temperatures induced strain in the crystal lattice, resulting in a noisy signal, while the choice of stirring method influenced particle size stability. These findings offer valuable insights for optimizing synthesis conditions tailored to specific applications of magnetite nanoparticles, providing users with a better understanding of the factors influencing nanoparticle synthesis.