부산대학교 도서관

Metal-organic frameworks (MOFs) exhibit great potential for dye adsorption. However, MOF powder is difficultto remove from aqueous solution, which hinders the practical application of MOFs. Integration of MOFs on polymericfibrous membrane provides a new strategy to reach the achievements that not only keep the adsorption ability of MOFs fordyes, but also easily remove the MOF/dye complex from water. Here, we successfully synthesize zeolitic imidazoleframework-67/polyacrylonitrile (ZIF-67/PAN) fibrous membrane with ZIF-67 loading ratio of 54 % by electrospinningmethod. The average diameters of ZIF-67 nanoparticles and ZIF-67/PAN fibers are about 200 nm and 0.72 μm, respectively. The adsorption process of MG on ZIF-67 nanoparticles or ZIF-67/PAN fibers followed a pseudo-second-order kinetic modeland fitted Langmuir isotherm. The maximum adsorption capacities of ZIF-67 nanoparticles and ZIF-67/PAN fibers are 2545and 1305 mg·g-1, respectively. After four regeneration cycles, the ZIF-67/PAN fibers membrane still exhibit over 92 % of theoriginal capacity of ZIF-67/PAN fibers. In addition, ZIF-67/PAN fibers also show good adsorption abilities for Congo red(849 mg·g-1) and Basic fuschin (730 mg·g-1). Therefore, ZIF-67/PAN fibers would be as a promising adsorbent for theremoval of dye in industrial application because of its simple preparation method, excellent adsorption property, ease ofseparation and favorable reusability.