Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 13, Issue 24, Pages 29041-29047Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c03859
Keywords
mixed-matrix membranes; MOFs; polymer functionalization; adhesion; molecular simulations; membrane fabrication; gas permeability
Funding
- King Abdullah University of Science and Technology (KAUST)
Ask authors/readers for more resources
By functionalizing the polymer, the adhesion between MOFs and polymers can be enhanced, improving the quality and performance of mixed-matrix membranes.
MOF-based mixed-matrix membranes (MMMs) prepared using standard routes often exhibit poor adhesion between polymers and MOFs. Herein, we report an unprecedented systematic exploration on polymer functionalization as the key to achieving defect-free MMMs. As a case study, we explored computationally MMMs based on the combination of the prototypical UiO-66(Zr) MOF with polymer of intrinsic porosity-1 (PIM-1) functionalized with various groups including amidoxime, tetrazole, and N-((2-ethanolamino)ethyl)carboxamide. Distinctly, the amidoxime-derivative PIM-1/UiO-66(Zr) MMM was predicted to express the desired enhanced MOF/polymer interfacial interactions and thus subsequently prepared and evaluated experimentally. Prominently, high-resolution transmission electron microscopy confirmed optimal adhesion between the two components in contrast to the nanometer-sized voids/defects shown by the pristine PIM-1/UiO-66(Zr) MMM. Notably, single-gas permeation measurements further corroborated the need of optimal MOF/polymer adhesion in order to effectively enable the MOF to play a role in the gas transport of the resulting MMM.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available