Research on photocatalytic removal of H2S using TiO2
CHEN Ying,WANG Dahai,LI Jinlian,YU Shouzhu,JI Jingpeng,LIU Jiagang
2009, 28(3):
395.
Abstract
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1820 )
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A series of nanometer titanium dioxide (TiO2) and doped TiO2 photocatalyst were prepared from Ti(OC4H9)4 using sol-gel method. The catalysts were doped of transition metals (Fe, Ni, Cu, Zn), rare earth (La, Ce), precious metal (Ag) and non-metal (N). In order to investigate photocatalytic removal sulfide, the photocatalyst was first plated on the glassware in film form by Czochralski method. The effects of different ions, doping ion concentration, reaction time, baking temperature on hydrogen sulfide removal were studied. The results showed that the optimal volumes of doped Fe, Ni, Cu, Zn, La, Ce, Ag and N in TiO2 in the oxidation of hydrogen sulfide as photocatalyts were 0.7%, 5.0%, 3.0%, 4.0%, 1.0%, 2.0%, 1.0% and 300% (molar ratio to TiO2) respectively. The hydrogen sulfide removal using 0.7% Fe-TiO2 from model compounds of natural gas was close to 97%.