| 摘要: | 摘要： A new hierarchical micro/mesoporous composite is synthesized via direct growth of microporous zeolitic imidazolate framework-8 (ZIF-8) on siliceous mesocellular foams (MCF). Depending on different synthetic conditions, ZIF-8 with two different particle sizes, i.e., ZIF-8 microparticles and ZIF-8 nanoparticles, were successfully formed on the external surface of amine-functionalized MCF (denoted as microZIF-8MCF and nanoZIF-8MCF, respectively). The synthesized hierarchical micro/mesoporous ZIF-8MCF structures were characterized with several spectroscopic techniques including X-ray diffraction (XRD), solid-state NMR, and FT-IR and electron microscopic techniques (scanning electron microscope, SEM, and transmission electron microscopy, TEM). In addition, the pervaporation measurements of the liquid water/ethanol mixture show that nanoZIF-8MCF/PVA (poly(vinyl alcohol) mixed-matrix membrane exhibits enhanced performance both on the permeability and separation factor. Compared to conventional routes for chemical etching, this study demonstrates a promising and simple strategy for synthesizing novel hierarchical porous composites exhibiting both advantages of mesoporous materials and microporous materials, which is expected to be useful for gas adsorption, separation, and catalysis.
其他題名： ACS Appl. Mater. Interfaces
出版者： United States: American Chemical Society
出版日期： 2014-04-09
出處： ACS Applied Materials & Interfaces, 2014-04, Vol.6 (7), p.5192-5198
資源來源： ACS publications
版權： Copyright © 2014 American Chemical Society
識別號： ISSN: 1944-8244
識別號： ISSN: 1944-8252
識別號： EISSN: 1944-8252
識別號： DOI: 10.1021/am5004188
識別號： PMID: 24625412 |
