Synthesis And Characterization Of Manganese Dioxide Nanoparticles Prepared By Chemical Preciptation Method

Abstract

          In this research, manganese dioxide nanoparticles (MnO₂ NPs) were prepared using a simple chemical precipitation method, using sodium thiosulfate (Na₂S₂O₃) as an effective reducing agent to control the size and shape of the nanoparticle crystals. This method represents a promising approach for preparing nanomaterials due to the possibility of tuning their structural properties under mild conditions, opening the way for innovative medical applications. The prepared particles were characterized using advanced analytical techniques, including Ultraviolet-visible (UV-Vis) spectroscopy to study the optical properties, Fourier-transform infrared (FTIR) spectroscopy to determine the chemical bonds, X-ray diffraction (XRD) to analyze the crystal phase and calculate the crystal size. The results showed that the particles belong to the α-MnO₂ phase and crystallized in the tetragonal crystal system, Transmission electron microscopy (TEM) and scanning electron microscopy (FESEM) to study the shape and size, with images showing that the particles exhibit a somewhat spherical structure, with slightly heterogeneous proportions, Energy-dispersive X-ray (EDX) analysis to determine the elemental composition. The results showed that the prepared particles are characterized by their small size, relatively regular shape, and large surface area, characteristics that contribute to improving their effectiveness in biological applications. Manganese dioxide nanoparticles show promising potential in the medical field, especially in nanomaterial-based therapeutic and diagnostic applications.