Preparation and characterization of nitrogen and iron co-doped titanium dioxide photocatalyst
Nitrogen and iron co-doped TiO2 was prepared by a sol-gel method. The results of photocatalytic degradation of Methylene blue (MB) demonstrate that the co-doped TiO2 catalyst exhibits high photocatalytic activity, and the degradation ratios of MB are 98.17% and 70.58% under ultraviolet(UV) light irradiation for 80 min and visible light irradiation for 80 min, respectively. X-ray diffraction result indicates that the co-doped TiO2 with the grain size of 10.84 nm is in conformity with an anatase and rutile mixed phase TiO2 form. The higher UV-Visible light photocatalytic activity of co-doped TiO2 is attributed to the partial N atoms occupying O-atom sites in the TiO2 to form Ti-N bonds, which lowers the band gap and caused the absorption edge of co-doped TiO2 shifting to the lower-energy region. The above effects are beneficial for improving the photocatalysis of co-doped TiO2 under UV light and visible irradiation.
ZHANG Jin ZOU Liming XU Su ZHONG Lei
College of Material Science and Engineering, Donghua University, Shanghai 201620, P.R.China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua Universit
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
1202-1205
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）