Synthesis and photothermal applications of MnFe2O4 nanoparticles

In this work, modified combustion process is used to synthesize nano-MnFe2O4. X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) analyses are used to evaluate the sample's structural integrity. Scanning electron micrograph shows the surface morphology of the sample. Energy dispersive X-ray spectrum is used to evaluate the phase purity of the sample. The average particle size of the sample estimated from transmission electron microscopy (TEM) is 18 nm. The UV-visible absorption spectroscopy reveals that the sample exhibits absorption band in NIR region. Photothermal study of the sample is done in detail. The experiment is done for three different concentrations. The time-temperature graph is drawn. From the graph maximum saturation temperature is obtained for 2 M concentration, and its value is 58.9 degrees C. This study shows that the 2 M sample shows maximum efficiency equal to 76.8%. The nano-MnFe2O4 is found to be the potential for photothermal applications.