Photocatalytic activity of Fe-doped CaTiO3 under UV-visible light
He Yang , Chong Han
,
Xiangxin Xue
DOI:10.1016/j.jes.2014.05.015
Received August 06, 2013,Revised November 30, 2013, Accepted , Available online July 09, 2014
Volume 26,2014,Pages 1489-1496
The photocatalytic degradation of methylene blue (MB) over Fe-doped CaTiO3 under UV- visible light was investigated. The as-prepared samples were characterized using X-ray diffraction (XRD), scanning electron microscope (SEM) equipped with an energy dispersive spectrometer (EDS) system, Fourier transform infrared spectra (FT-IR), and UV-visible diffuse reflectance spectroscopy (DRS). The results show that the doping with Fe significantly promoted the light absorption ability of CaTiO3 in the visible light region. The Fe-doped CaTiO3 exhibited higher photocatalytic activity than CaTiO3 for the degradation of MB. However, the photocatalytic activity of the Fe-doped CaTiO3 was greatly influenced by the calcination temperature during the preparation process. The Fe-doped CaTiO3 prepared at 500℃ exhibited the best photocatalytic activity,with degradation of almost 100% MB (10 ppm) under UV-visible light for 180 min.
