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The new macroscopic-scale SBA-15 spheres with diameter of 0.2-0.5 mm are prepared by a sol-gel method,in which the tetrabutylorthosilicate(TBOS) is used as silicon source and triblock copolymer(P123) and polyoxyethylene octylphenol ether(OP- 10) are used as templates.The resulting spherical samples are characterized by XRD,N_2 adsorption-desorption,TEM and SEM methods.The results show that the inner structure of SBA-15 macrospheres has macroporous channels(0.5μm) and mesoporous skeleton(4-5 nm).These SBA-15 macrospheres with the hierarchical pore structure demonstrate high absorption capacity for Emodin molecules.
The new macroscopic-scale SBA-15 spheres with diameters of 0.2-0.5 mm are prepared by a sol-gel method, in which the tetrabutylorthosilicate (TBOS) is used as silicon source and triblock copolymer (P123) and polyoxyethylene octylphenol ether (OP- 10) are used as templates. The resulting spherical samples are characterized by XRD, N 2 adsorption-desorption, TEM and SEM methods. The results show that the inner structure of SBA-15 macrospheres has macroporous channels (0.5 μm) and mesoporous skeleton -5 nm) .These SBA-15 macrospheres with the hierarchical pore structure demonstrate high absorption capacity for Emodin molecules.