The development of simple, versatile strategies for the synthesis of metal-organic
framework (MOF)-derived membranes are of increasing scientific interest, but
challenges exist in understanding suitable fabrication mechanisms. Here we report a
route for the complete transformation of a series of MOF membranes and particles,
based on multivalent cation substitution. Through our approach, the effective pore
size can be reduced through the immobilization of metal salt residues in the
cavities, and appropriate MOF crystal facets can be exposed, to achieve competitive
molecular sieving capabilities. The method can also be used more generally for the
synthesis of a variety of MOF membranes and particles. Importantly, we design and
synthesize promising MOF membranes candidates that are hard to achieve through
conventional methods. For example, our CuBTC/MIL-100 membrane exhibits 89, 171, 241
and 336 times higher H2 permeance than that of CO2,
O2, N2 and CH4, respectively.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.