Abstract

Sandip Mondal

DOI : http://dx.doi.org/10.13005/ojc/380121

α-MnO2 nanoparticle with semi-tubular morphology was prepared pyrolytically using [Mn(pyo)₂(dca)₂]_n as a sole precursor at 700C in air for 2 h without applying any catalyst or template. This nanostructure was systematically characterized physically by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction spectroscopy (XRD), scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA). The prepared α-MnO2 displayed high photocatalytic activity toward decolorization of methylene blue (MB) dye under visible light irradiation in assistance with H2O2. The result obtained indicated that almost 84% colour removal occured within 2.40 h.

Manganese Oxide; Nanoparticles; Pyrolytic Technique; Photocatalytic Activity

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