Preparation and photocatalytic activity of nano-TiO2 codoped with fluorine and ferric
Nano-F./Fe3+/TiO2 particles were prepared by hydrolysis of tetrabutyl titanate in a mixed CF3COOH-Fe(NO3)3-H2O solution.The photocatalytic decomposition of methylene blue in aqueous solution was used as a probe to evaluate their photocatalytic activities.The powders were characterized by X-ray diffraction (XRD),energy dispersion X-ray spectrum (EDS) and Brunauer-Emmett-Teller (BET) surface area analysis.The results show that F.and Fe 3+ are doped into TiO2.The F.and Fe3+ doping can help to enhance the nano-TiO2 photocatalytic activity greatly.The appropriate codoping conditions for F-Fe are n(F)/n(TiO2)=2％,n(Fe)/n(TiO2)=0.05％,and the degradation rate of methylene blue at 1 h is improved from 73.2％ to 87.5％.The codoped nano-F./Fe3+/TiO2 particles have higher BET specific surface area,smaller crystallite size and higher photocatalytic activity than those of undoped TiO2 particles.
nano-TiO2 F./Fe3+/TiO2 codoping photocatalytic activity
LI Fa-tang LIU Rui-hong ZHAO Di-shun SUN Zhi-min QU Zhi-ming
College of Science,Hebei University of Science and Technology,Shijiazhuang 050018,China College of Chemical and Pharmaceutical Engineering,Hebei University of Science and Technology,Shijia School of Civil Engineering,Hebei Engineering University,Handan 056038,China
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）