Natural Synthesis, Characterisation, and Photocatalytic Performance of Nanoparticles made of Manganese Dioxide using Manganese Acetate Tetrahydrate as Precursor

Abstract: This study describes a straightforward, effective, and environmentally benign method for producing manganese dioxide nanoparticles (MnO2 NPs) using Nyctanthes arbor-tristis leaf extract. It was discovered by Fourier-transform infrared spectra that the plant extract contributed to the creation of MnO2 NPs. The band gap of the synthesised MnO2 NPs was identified as the source of the absorption peaks observed in the UV–visible absorption spectra at 412 nm. X-ray diffraction analysis was used to identify the crystal phase of the MnO2 NPs and validate the development of crystalline MnO2 NPs. According to the X-ray diffraction pattern, MnO2 NPs have crystalline nature. Furthermore, the synthesised MnO2 NPs' was revealed by field emission scanning electron microscopy investigation with EDS which gives Information about Compositional elements. MnO2 NPs have the ability to degrade MB dyes in the UV-Visible light spectrum by photocatalysis. Using Methylene Blue as an organic pollutant, the photocatalytic activities for the dye degradation of MnO2 NPs were assessed