Abstract

Manganese tungstate (MnWO4) nanoparticles, has been successfully prepared via a novel method. In this method, manganese salt and Na2WO4·2H2O were applied as starting reagents to fabricate MnWO4 nanoparticles. The effect of different amino acids like valine, glycine and asparagine on the morphology and particle size of the products has been investigated. The as-synthesized nanostructures were characterized by X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy (UV–Vis), and energy dispersive X-ray microanalysis. According to the vibrating sample magnetometer, MnWO4 nanoparticles indicated a paramagnetic behavior at room temperature. To evaluate the catalytic properties of nanocrystalline manganese tungstate, the photocatalytic degradations of methyl orange under ultraviolet light irradiation were carried out.

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