Green synthesis, characterization, and photo catalytic degradation efficiency of Trimanganese Tetroxide nanoparticle

Mn3O4 nanoparticles has been synthesised from Manganese (II) acetate and Simarouba Glauca leaf extract using microwave heating. This novel method of synthesis of Mn3O4 is fast, low-cost, non-toxic and environment friendly. The synthesised product was characterised by powder X-ray diffraction(XRD),Fourier transform infrared spectroscopy( FT-IR), Ultraviolet-Visible spectroscopy( UV-Visible), X-ray photoelectron spectroscopy( XPS), Scanning electron microscopy(SEM) and Transmission electron microscopy(TEM). The prepared material was identified as of tetragonal hausmannite crystalline structure with spherical morphology and particle size 15 nm. Photo catalytic degradation ability of the synthesised product was examined by using it for the degradation of Malachite green dye in various experimental conditions under visible light. The synthesised Mn3O4 was found to be an efficient photo catalyst for the removal of Malachite green at the optimum conditions of pH 9, adsorbent dose 0.1 g and dye concentration 20ppm. This study thus reveals the applicability of nanoparticles of Mn3O4 for the removal of pollutants from industrial waste water.