Surface Modification, Supporting And Photocatalysis Of Titanium Dioxide

(1). Fe3+ V5+, Fe3+ Eu3+doping and codoping nanometer scale TiO2 have been synthesized with sol-gel method. The photocatalytic experiments indicate that codoping samples enhance the photocatalytic efficiency greatly. The effect of ion dopants on TiO2 photocatalytic efficiency was discussed though XRD, Raman, UV-Vis and photo-electrochemistry methods etc.(2). TiO2 supported on activated carbon (T/AC) were prepared. The catalyst which had ca 41 wt% TiO2 loading and was calcined at 400 shows the best photocatalytic efficiency, which is 2.5 times compared with nanometer TiO2. The synergy effect was attributed to the accumulation of the organic pollutant on the activated carbon support.(3). TiO2 meso-molecular sieves (MT) which shows excellent absorption ability was synthesized with hexadecyltrimethylammonium bromide (CTAB) as template. Supporting catalysts (TiO2/MT) were prepared through ancoring anatase TiO2 crystalline onto the inner walls of MT. TiO2/MT exhibits higher photocatalytic efficiency than MT.