| 초록 |
Metal-organic frameworks (MOFs) have been extensively studied due to their highly designable framework diversity, which provides a large variety of pore structure and surface. Especially, mesoporous MIL-101 can be recognized as a good candidate for the decoration of pore surface because it has not only large mesopores (28 and 32Ǻ), but also coordinately unsaturated metal sites (CUS). Functionalization of Brønsted acid group in MIL-101 has been generally obtained by either one-pot synthesis or post-synthetic modification. Here, we have succeeded in the post-synthetic covalent modification of MIL-101 to retain sulfonic acid group even after humidity treatment. Physico-chemical properties of samples were characterized by XRD, N2 isotherm, FT-IR, ICP, EDX and EA analysis. Surface functionalized MIL-101 by Brønsted acid group can be used for toxic gas sorption application. |
