Preparation Of Bi2moo6 Microspheres With Hollow Structure And Degradation Performance Of Ofloxacin Antibiotics

Hollow microsphere Bi2MoO6 photocatalyst was prepared by alcohol synthesis and high temperature annealing using sodium molybdate and lanthanum nitrate, pentahydrate as raw materials. The microstructure, specific surface area and optical characteristics of as-prepared Bi2MoO6 were characterized by X-ray diffraction (XRD), infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), physical adsorption analyzer, ultraviolet-visible diffuse reflectance (UV-Vis DRS), fluorescence spectroscopy (PL) and electrochemical test. The photocatalytic performance of Bi2MoO6 on the aqueous solution of ofloxacin (OFX) was investigated under the visible light. The results show that average diameter (500 nn) of the hollow Bi2MoO6 was synthesized with as more 5 times of the specific surface area as the sheet Bi2MoO6. The hollow Bi2MoO6 provides a large number of adsorption sites for reactants. The degradation rate of OFX (pH=7, 10 mg.L-1) by 1 g.L-1 hollow Bi2MoO6 reach 64% under 120 min visible light irradiation, while the sheet Bi2MoO6 under the same conditions was only 31%. The hollow spherical Bi2MoO6 showed the excellent photocatalytic capacity in strong alkaline environment, and the degradation rate of OFXreached 79%, which has a high utilization value in alkaline environment.