Photocatalytic Degradation of Organic Dye on Sulfated Nanosize TiO2 Sensitized by H2O2 under Visible irradiation
Nano-TiO2 synthesized by hydrolysis of TiCl4 demonstrated high reactivity in presence of peroxide hydrogen under visible light (λ>420nm).The nano-TiO2 powders were characterized by XRD, Uv-Vis, FT-IR. The results showed that the TiO2 nanocatalyst sensitized with peroxide hydrogen could absorb visible light up to 550nm, and Vis absorption could be extended to 600 nm for the sulfated TiO2 .Photocatylytic degradations of methyl orange and methylene blue were above 90％ for sulfated TiO2 in 180min. The inorganic sulfate species absorbing on the surface of titania were mainly responsible for the high activity of the TiO2 under visible light regions.
nano-TiO2 visible light photocatalysis methyl orange peroxide hydrogen
Jian ZOU Jia-cheng GAO Yong WANG
College of Material science and Engineering, Chongqing University, Chongqing,400044,China School of College of Material science and Engineering, Chongqing University, Chongqing,400044,China
国际会议
重庆
英文
220-224
2008-06-09（万方平台首次上网日期，不代表论文的发表时间）