科研之友
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摘要
Three-dimensional (3D) ordered mesoporous samarium oxides with cubic polycrystalline structure were fabricated by means of vacuum-assisted impregnation and mill impregnation route using ordered mesoporous SiO2 (KIT-6) as the hard template with nitrate samarium as the metal source. The structure and morphology of the as-prepared materials were characterized by XRD, TEM and N-2 adsoption-desorption. It is found that the mesoporous Sm2O3 sample obtained by vacuum-assisted method have a higher surface area (184 m(2) g(-1)) than that (142 m(2) g(-1)) of mill impregnation and had a better 3D mesoprosity, which has potential applications in the catalytic reaction.
