Abstract
Abstract A Ti–Mn hybrid oxide (Ti–Mn–HO) that simultaneously contained anatase-TiO 2 and Mn 3 O 4 was prepared and applied to arsenite photocatalytic oxidization (PCO) under UV irradiation. X-ray diffraction (XRD), scanning electron microscopy with an energy dispersive spectrometer (SEM/EDS), transmission electron microscopy (TEM) and a N 2 adsorption–desorption method were employed to characterize the morphology of the catalyst. Kinetics experiments indicated that Mn 3 O 4 promoted the PCO-adsorption process of arsenite [As(III)] better than either pure anatase-TiO 2 under UV irradiation or Ti–Mn–HO without UV exposure. The cause of this phenomenon was investigated using Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). Finally, a synergistic effect for the transformation of photoproduct holes and electrons between the TiO 2 and Mn 3 O 4 phases is assumed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
