Journal
APPLIED MATERIALS TODAY
Volume 27, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apmt.2022.101462
Keywords
Chemical vapor deposition; Membrane separation; Mixed matrix membranes; MOF@MOF heterosystems; Transport pathways
Categories
Funding
- National Natural Science Foundation of China [22178143]
- Guangdong Basic and Applied Basic Research Foundation [2020B1515120036, 2021A1515010187]
- Talent Recruitment Project of Guangdong [20170078]
Ask authors/readers for more resources
In this study, guest-host dual MOF@MOF heterosystems were designed and constructed using vapor linker processing. These heterosystems exhibited tailored dual pore geometries, enhanced affinities to gas molecules, and combined advantages of different MOFs. The MOF@MOF composites showed substantially improved compatibility toward polymers and could adjust membrane transport pathways for achieving outstanding carbon capture performance.
Designing metal-organic framework (MOF) architectures and regulating their porous microenvironments are of greatly scientific interests. In this study, we report a kind of guest-host dual MOF@MOF heterosystems with guest MOF cells in other host MOF cavities, and construct them by vapor linker processing. Thanks to the simplified mass transfer process from solvent-free chemical vapor deposition, the pre impregnated metal precursors in confined MOF pores can be in situ bridged by linkers to form MOF cages with well porosity. These heterosystems exhibit tailored dual pore geometries, enhanced affinities to gas molecules, and combined advantages of different MOFs. We further demonstrate that the MOF@MOF composites have substantially improved compatibility toward polymers and can serve as molecular sieving to adjust membrane transport pathways for achieving outstanding carbon capture performance, with 162% CO2 permeability (14,366 Barrer, 1 Barrer = 10(-10) cm(3) cm cm(-2) s (-1) cmHg(-1)) and 152% CO2/N2 selectivity as that of pure polymeric membranes. Our findings provide an alternative perspective for developing heterogeneous and porous materials (C) 2022 Elsevier Ltd. All rights reserved.
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