4.8 Article

Moisture-Stable Zn(II) Metal-Organic Framework as a Multifunctional Platform for Highly Efficient CO2 Capture and Nitro Pollutant Vapor Detection

期刊

ACS APPLIED MATERIALS & INTERFACES
卷 8, 期 28, 页码 18043-18050

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b04611

关键词

metal-organic framework; moisture stability; dynamic structure; selective CO2 sorption; GCMC simulation; nitrobenzene vapor detection

资金

  1. National Natural Science Foundation of China [21571158, 21471134]
  2. Program for Science & Technology Innovative Research Team in University of Henan Province [15IRTSTHN-002]
  3. Plan for Scientific Innovation Talent of Henan Province [154200510011]
  4. Innovation Scientists and Technicians Troop Construction Projects of Henan Province [152101510003]
  5. Startup Fund for PhDs of Natural Scientific Research of Zhengzhou University of Light Industry [2015BSJJ042]

向作者/读者索取更多资源

A moisture-stable three-dimensional (3D) metal organic framework (MOP), {(Me2NH2)[Zn-2(bpydb)(2)(ATZ)RDMA)(NMF)(2)](n) (1, where bpydb = 4,4'-(4,4'-bipyridine-2,6-diyl)dibenzoate, ATZ = deprotonated 5-aminotetrazole, DMA = N,N-dimethylacetamide, and NMF = N-methylformamide), with uncoordinated N-donor sites and charged framework skeleton was fabricated. This MOF exhibits interesting structural dynamic upon CO2 sorption at 195 K and high CO2/N-2 (127) and CO2/CH4 (131) sorption selectivity at 298 K and 1 bar. Particularly, its CO2/CH4 selectivity is among the highest MOFs for selective CO2 separation. The results of Grand Canonical Monte Carlo (GCMC) simulation indicate that the polar framework contributes to the strong framework-CO2 binding at zero loading, and the tetrazole pillar contributes to the high CO2 uptake capacity at high loading. Furthermore, the solvent-responsive luminescent properties of 1 indicate that it could be utilized as a fluorescent sensor to detect trace amounts of nitrobenzene in both solvent and vapor systems.

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