Oil-water interface templating of mesoporous macroscale structures
Oil-water interface templating of mesoporous macroscale structures
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DOI：
10.1126/science.273.5276.768
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发表时间：
1996-08-09
期刊：
影响因子：
56.9
通讯作者：
Schuth, F
中科院分区：
文献类型：
--
作者：
Schacht, S;Huo, Q;Schuth, F
通过同时控制两个不同长度尺度上的界面来产生也是宏观结构化的有序介孔结构化多孔二氧化硅。胶束阵列控制的纳米级组件，并在水相和有机相之间的静态边界，控制实现了微米至厘米级。用p6、Pm 3 n和P6（3）/mmc结构制备二氧化硅的酸制备的介观结构，其形式为长度为50至1000微米的多孔纤维、直径为1至100微米的中空球和直径高达10厘米且厚度为约10至500微米的薄片。这些结果可能对技术应用具有意义。例如药物缓释系统或膜，以及生物矿化，其中许多过程也是界面控制的。
Ordered mesostructured porous silicas that are also macroscopically structured were created by control of the interface on two different length scales simultaneously. Micellar arrays controlled the nanometer-scale assembly, and at the static boundary between an aqueous phase and an organic phase, control was achieved on the micrometer to centimeter scale. Acid-prepared mesostructures of silica were made with the p6, Pm3n, and the P6(3)/mmc structures in the form of porous fibers 50 to 1000 micrometers in length, hollow spheres with diameters of 1 to 100 micrometers, and thin sheets up to 10 centimeters in diameter and about 10 to 500 micrometers in thickness, These results might have implications for technical applications, such as slow drug-release systems or membranes, and in biomineralization, where many processes are also interface-controlled.