Green Synthesis, Characterization and Magnetic Properties of Hausmannite Nanoparticles
N. Deraz
Physical Chemistry Department, Laboratory of Surface Chemistry and Catalysis, National Research Centre, Dokki, Cairo, Egypt
Received: November 18, 2018; revised version March 8, 2019; in final form March 22, 2019
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Manganese oxides have an extreme importance in many industrial and environmental fields; so the scientists have sought to prepare these oxides in simple, cheap and environmentally friendly ways. From the viewpoint of economy efficiency and environmental demand, this article is aiming to prepare the most important oxide of manganese (hausmannite) in nanoscale by using combustion method via egg white. Scanning electron micrographs, energy dispersive X-ray and X-ray diffraction measurements display the structural and morphological properties of Mn oxide nanoparticles. The as-prepared systems are spongy, homogeneous and fragile. However, the vibrating sample magnetometry study shows that the as-prepared manganese oxides are found to be paramagnetic at room temperature.

topics: hausmannite, XRD, SEM, EDX and magnetic properties