Two facile methods to produce the cobalt manganite nanostructures and evaluation of their photocatalytic performance

In this work, we report the preparation of ultra-uniform CoMn2O4 nanostructures via simple co-precipitation and microwave-assisted co-precipitation routes. The as-prepared cobalt manganite nanostructures were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscopy, energy dispersive X-ray microanalysis, vibrating sample magnetometer and UV-Vis diffuse reflectance spectroscopy. Results prove that by controlling the various parameters such as precipitating agent, surfactant, solvent, calcination temperature and microwave power, different particle size and morphology of the CoMn2O4 nanostructures can be achieved. The photodegradation of the Acid Violet 7 (monoazo dye) as water pollutant in wastewater coming from textile and dyeing industries was carried out to evaluate the photocatalytic activity of as-prepared CoMn2O4 nanostructures.