Removal of bisphenol A and methylene blue through persulfate activation by calcinated α-MnO nanorods: effect of ultrasonic assistance and toxicity assessment.

This work investigates the efficacy of α-MnO nanorods for persulfate-mediated degradation of bisphenol A (BPA) and methylene blue (MB), in silent and ultrasonic-assisted systems. The conversion of α-MnO nanoparticle flakes to nanorods occurs upon calcination at a temperature of 400 °C for 3 h under the ramping conditions. The comparative characterization of nanomaterials pre- and post-calcination reveals better physical, chemical, and thermal properties of α-MnO nanorods.