摘要
Ordered crystalline mesoporous anatase titanium dioxides with different amounts of rutile were prepared by hard-template approaches using mesoporous silica(KIT-6)as the template.The resulting mesoporous materials were characterized by powder X-ray diffraction(PXRD),transmission electron microscope(TEM),N2 adsorption and Raman spectroscopy.All mesoporous TiO2 has three-dimensional(3D)ordered mesostructures with large Brunauer–Emmett–Teller(BET)surface area and narrow pore size distribution(ca.5 nm).It was found that the level of rutile phase in the mesoporous titanium oxide was related to the SO4^2-concentration in the starting materials.Their photocatalytic hydrogen production was evaluated and compared.It is found that low rutile content is beneficial for a high catalytic activity.All samples demonstrate a better activity than commercial P25.
Ordered crystalline mesoporous anatase titanium dioxides with different amounts of rutile were prepared by hard-template approaches using mesoporous silica（KIT-6）as the template. The resulting mesoporous materials were characterized by powder X-ray diffraction（PXRD）, transmission electron microscope（TEM）, N2 adsorption and Raman spectroscopy. All mesoporous TiO2 has three-dimensional（3 D） ordered mesostructures with large Brunauer–Emmett–Teller（BET） surface area and narrow pore size distribution（ca. 5 nm）. It was found that the level of rutile phase in the mesoporous titanium oxide was related to the SO42-concentration in the starting materials. Their photocatalytic hydrogen production was evaluated and compared. It is found that low rutile content is beneficial for a high catalytic activity. All samples demonstrate a better activity than commercial P25.
基金
financially supported by the National Natural Science Foundation of China (Nos. 21401142 and 51825204)
the Recruitment Program of Global Youth Experts (1000 plan)
the Science and Technology Commission of Shanghai Municipality (No. 14DZ2261100)
the Fundamental Research Funds for the Central Universities
