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With the increasingly serious environmental pollution, how to control and deal with environmental pollution has become a major issue. Among Photocatalytic materials, TiO 2 its oxidation resistance, good stability, low toxic, etc., become the most promising photocatalysts agent, but there quantum yield is low, difficulties such as lack of recycling. Currently recognized domestic and foreign counterparts on TiO 2 is modified to improve its photocatalytic activity, expanding the spectral response range of the effective ways. In this study, SBA-16 mesoporous pores of uniformity and ease of loading prepared large specific surface area, uniform dispersion of Fe-TiO 2 / SBA-16 and Ag-TiO 2 / SBA-16 photocatalytic, and the correlations characterization and photocatalytic performance test. In acidic conditions, the triblock copolymer F127 as template, TEOS as the silicon source, at different crystallization temperature hydrothermal synthesis of different specific surface area and pore diameter of the SBA-16 mesoporous molecular sieves. And use it as a base, tetrabutyl titanate as titanium source, through the channels of hydrolysis of TiO 2 / SBA-16. Using XRD, N2 adsorption - desorption, TEM and other means were tested. Characterization results showed that: the catalyst remains the SBA-16 mesoporous structure, but the specific surface area, pore volume and pore over TiO 2 load volume increases. TiO 2 / SBA-16 Optical Degradation of Rhodamine B proved: to 100 ℃ crystallization obtained SBA-16 as the base, 45% TiO 2 to load preparation The 45% TiO 2 / SBA-16100 catalytic activity, up to 84.02%. To Fe (NO 3 ) 3 · 9H 2 O and AgNO 3 for the metal source, 100 ℃ crystallization The SBA-16 as the base, through the channels of hydrolysis with different doping Fe, Ag-45% TiO 2 / SBA-16 catalyst. XRD analysis showed that TiO 2 particle size is small, the degree of crystallization is not high, N 2 adsorption - desorption, TEM tests show that the catalyst has ordered mesoporous structure and there is TiO 2 particles deposited on the catalyst surface, XPS tests show that Fe 3 has entered into TiO 2 crystal lattice, Ag deposited in the form of a single substance TiO 2 surface. To Fe (NO 3 ) 3 · 9H 2 O and AgNO 3 for the metal source, TBOT, glacial acetic acid as reactants, ethyl acetate as the solvent by Solvothermal different doping Fe, Ag-45% TiO 2 / SBA-16 catalyst. XRD analysis showed that TiO 2 particle size is large, a high degree of crystallization, N2 adsorption - desorption, TEM tests show that TiO 2 particles uniformly supported on SBA-16 pore walls There is no accumulation on the surface, XPS tests show that Fe 3 has entered into TiO 2 crystal lattice, Ag deposited in the form of a single substance TiO 2 Surface , and the more evenly dispersed. Degradation of Rhodamine B is a substrate for both methods prepared Fe and Ag-doped photocatalytic activity were compared. Photocatalytic results showed that: a Ag solvothermal doped relatively high catalytic activity, the best TiO 2 loading of 45%, the best amount of Fe-doped 0.05at%, most Good Ag doping amount of 0.5at%, after 2h photocatalytic degradation of rhodamine B degradation rates were 92.76% and 95.05%, much higher than the commercial P25 degradation rate of 22.39%.
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