ja509960n_si_001.pdf (1.28 MB)
A Facile and General Coating Approach to Moisture/Water-Resistant Metal–Organic Frameworks with Intact Porosity
journal contribution
posted on 2014-12-10, 00:00 authored by Wang Zhang, Yingli Hu, Jin Ge, Hai-Long Jiang, Shu-Hong YuThe
moisture sensitivity of many metal–organic frameworks
(MOFs) poses a critical issue for their large-scale real application.
One of the most effective methods to solve this problem is to convert
the surface of MOFs from hydrophilic to hydrophobic. Herein, we develop
a general strategy to modify hydrophobic polydimethysiloxane (PDMS)
on the surface of MOF materials to significantly enhance their moisture
or water resistance by a facile vapor deposition technique. MOF-5,
HKUST-1, and ZnBT as representative vulnerable MOFs were successfully
coated by PDMS, and these coated samples well inherited their original
crystalline nature and pore characteristics. Strikingly, the surface
areas of these MOFs were nearly 100% retained upon PDMS-coating. Such
a coating process might render MOFs applicable in the presence of
water or humidity in extended fields such as gas sorption and catalysis.