A new
ZIF-8 membrane architecture with high performance supported
on vertically aligned ZnO nanorods was successfully prepared. The
vertically aligned, single crystal ZnO nanorods were grown seamlessly
from porous ceramic support to form an intermediate support layer
for the ZIF-8 membrane. They provide multiple anchorages for the ZIF-8
membrane that are both strong and flexible. The nanorods were activated
to induce a uniform nucleation of ZIF nuclei on their surface to initiate
and guide the growth of a defect-free ZIF-8 membrane. Single gas permeations
and binary separations carried out to investigate the transport properties
of these new membrane architectures confirmed that the ZIF-8 membranes
were free of defects and stable at a higher temperature (473 K).
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