期刊
ACS APPLIED NANO MATERIALS
卷 4, 期 5, 页码 4346-4350出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.1c00638
关键词
metal-organic frameworks; water adsorption; water stability; topology; TFA modification
资金
- Defense Advanced Research Projects Agency [HR001121C0015]
- National Science Foundation (NSF) Graduate Research Fellowship [DGE-1842165]
- Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF) [ECCS-1542205]
- MRSEC program (NSF) at the Materials Research Center [DMR-1720139]
- International Institute for Nanotechnology (IIN)
- Keck Foundation
- State of Illinois, through the IIN
- SHyNE Resource (NSF) [ECCS-1542205]
- State of Illinois
- IIN
- Northwestern University
The study found that the topology of MOFs affects their water stability, and using TFA as a hydrophobic capping agent can improve the water stability of Zr-based MOFs.
Studying the hydrolytic stability in metal-organic frameworks (MOFs) is essential for practical implementations. Herein, we designed a new nanoporous MOF, NU-950, with sqc topology and studied the water sorption of three polymorphs NU-901 (scu), NU-1000 (csq), and NU-950 (sqc). The work reveled the effect of topology on the water stability. Additionally, we described a facile and generalizable method to improve the water stability of the as-synthesized Zr-based MOFs using a small hydrophobic capping agent, trifluoroacetic acid (TFA). The work highlighted the synergistic effect of topology and pore environment control in improving the water stability of nanoporous Zr-based MOFs.
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