Formation of a New Ia3d Cubic Meso-Structured Silica via Triblock Copolymer-Assisted Synthesis
Journal of the American Chemical Society2003Vol. 125(15), pp. 4402–4403
Citations Over TimeTop 10% of 2003 papers
Abstract
A new mesoporous silica structure with cubic Iad symmetry has been synthesized. The structure has very large unit cell dimensions, up to 250 A in the as-synthesized form and 222 A after calcination, and the surface area is around 700 m2/g. The syntheses were done according to well-established synthesis conditions with the triblock copolymers Pluronics P103 or P123, except for the addition of NaI to the synthesis mixture. Small-angle X-ray scattering revealed that the sample has Iad symmetry. According to electron micrographs, the structure is similar to that of MCM-48, and we thus propose that the structure lies on the gyroid minimal surface.
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