Title
Amorphous TiO2 doped with carbon for visible light photodegradation of rhodamine B and 4-chlorophenol
Author
Penghui Shao, Jiayu Tian, Zhiwei Zhao, Wenxin Shi, Shanshan Gao, Fuyi Cui
Year
2015
Journal
Applied Surface Science
Abstract
Visible light photocatalytic activity of amorphous TiO2 doped with carbon is prepared by a facile sol-gel route for the first time. The most active sample with mesostructure of amorphous phase, high surface area (273 m2 g−1) and large pore volume (0.33 cm3 g−1) is identified by X-ray diffractometer, Raman spectrometer, transmission electron microscope and N2 adsorption–desorption isotherms. In addition, the most active sample is characterized by Fourier transform-infrared spectrometer, X-ray photoelectron spectrometer, UV–vis diffuse reflectance spectrometer and luminescence spectrometer. The results show that the most active sample with oxygenic groups has a narrower bandgap and lower recombination of electron–hole, due to the carbon doping and phase of amorphous. Effective photodegradation capability and stability of rhodamine B and colorless 4-chlorophenol are verified by photocatalytic tests under visible light irradiation. A possible mechanism of amorphous TiO2 doped with carbon for visible light photocatalysis is proposed. The findings of this paper will provide new insights to design visible light-induced photocatalyst based on amorphous TiO2 for organic removal.
Instrument
FP-6500
Keywords
Fluorescence, Photoluminescence, Materials