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

作者：Chen, Di-Ming; Tian, Jia-Yue; Chen, Min; Liu, Chun-Sen^*; Du, Miao^*

来源：ACS Applied Materials & Interfaces, 2016, 8(28): 18043-18050.

DOI：10.1021/acsami.6b04611

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

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.

• 出版日期2016-7-20
• 单位郑州轻工业大学