Enhanced photocatalytic activity of Cr-doped CaTiO3 particles synthesized by solid state reaction route
摘要
Photocatalytic degradation of methylene blue on pure and Cr-doped CaTiO3 particles under UV–visible light has been investigated. Samples were analyzed using a variety of spectroscopic methods, including X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, and ultraviolet–visible diffuse reflectance spectroscopy. The results show that the visible light absorption capability of CaTiO3 was significantly enhanced by Cr doping due to the reducing bandgap (~ 2.91 eV) compared to that (3.29 eV) of the pure sample. Successively, enhanced photocatalytic activity was achived for Cr-doped CaTiO3.