A multifunctional double walled zirconium metal-organic framework: high performance for CO2adsorption and separation and detecting explosives in the aqueous phase

A rare double walled zirconium metal-organic framework, [Zr6O4(OH)(4)(DCPB)(6)]center dot 2DMF center dot 1H(2)O (JLU-Liu45, 1,3-di(4-carboxyphenyl)benzene (H2DCPB)), was successfully constructed. Because of its high connectivity, double wall and interpenetration of the framework,JLU-Liu45displays extraordinary chemical stability, and is able to maintain an intact framework after being immersed in acid or base solutions. Such a Zr-MOF is also a multifunctional material, which exhibits good capabilities for both CO(2)adsorption and separation and explosives detection in the aqueous phase. Due to the multiple weak C-HMIDLINE HORIZONTAL ELLIPSISO interactions and narrow pores of the framework,JLU-Liu45displays brilliant CO(2)adsorption (116 cm(3)g(-1), 1 bar and 273 K) and separation ability (CO2/N-2= 81.4, 1 bar and 298 K), surpassing that of state-of-the-art Zr-MOFs reported to date. Additionally,JLU-Liu45shows high performance in detecting explosives in the aqueous phase, in which theK(SV)value towards TNP can reach up to the 10(5)M(-1)level.