Journal
DALTON TRANSACTIONS
Volume 50, Issue 15, Pages 5244-5250Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt00136a
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Funding
- National Natural Science Foundation of China [21531005, 21671112]
- Programme of Introducing Talents of Discipline to Universities [B18030]
- Nature Science Fund of Tianjin, China [20JCQNJC01680]
- State Key Laboratory of Catalytic Materials and Reaction Engineering (RIPP, SINOPEC)
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By regulating the solvent used for synthesis, two porous Ni-MOFs materials were obtained, with compound 1 having a rigid 3D framework and selective adsorption of CO2, and compound 2 showing a flexible 3-fold interpenetrated framework with higher adsorption capacity for CO2 and n-C4H10 after desolvation.
By regulating the solvent used for synthesis, two porous Ni-MOFs, namely {[Ni-3(BTC)(2)(TPT)(2/3)(H2O)(4.08)(MeOH)(0.92)]center dot 2DMF center dot 0.5H(2)O center dot 0.5MeOH}(n) (1) and {[Ni-3(BTC)(2)(TPT)(2)(H2O)(6)]center dot 6DMF}(n) (2) (H3BTC = 1,3,5-benzenetricarboxylic acid, TPT = 2,4,6-tris(pyridin-4-yl)-1,3,5-triazine, DMF = N,N-dimethylformamide, and MeOH = methanol) were obtained. Compound 1 reveals a rigid 3D framework, while compound 2 shows a flexible 3-fold interpenetrated framework. Compound 1 exhibits a selective adsorption of CO2 due to the sieving effect of the rigid framework containing two types of cages with small apertures. Noteworthily, the flexible compound 2 displays an obviously guest-induced structural transformation. The desolvated compound 2 reveals a much higher capacity toward CO2 and n-C4H10 than those of N-2 CH4, C2H6 and C3H8.
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