期刊
DALTON TRANSACTIONS
卷 50, 期 37, 页码 13096-13102出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1dt00947h
关键词
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资金
- National Natural Science Foundation of China [21771078, 21621001]
- 111 Project [B17020]
The novel 3D Cu(ii) metal-organic framework features a distinctive regionalized pore system that maintains the uniformity of the pore structure and high porosity, exhibiting excellent adsorption ability of iodine in cyclohexane.
Herein, a novel 3-dimensional (3D) Cu(ii) metal-organic framework (MOF), [Cu-3(mu(2)-O)(2)(p-tr(2)Ph)(2)(HCOO)][NO3]center dot 3DMF center dot 3H(2)O (compound 1), which is constructed by directly interlocking regionalized hollow two-dimensional (2D) layers, has been conceived and solvothermally synthesized. Such a distinctive regionalized pore system effectively maintains the uniformity of the pore structure, isolates the counterions and bridging ligands in the partition layer, and endows compound 1 with high porosity. In consequence, compound 1 exhibits excellent adsorption ability of iodine in cyclohexane. The removal efficiency in cyclohexane solution (0.01 mol L-1) can reach up to 80% in 8 min, and the absorption ability towards iodine can reach about 1.15 g g(-1). Moreover, iodine can also be controllably released in ethanol. The release rate was up to 4 x 10(5) mol L-1 min(-1) . Furthermore, compound 1 also showed prominent recyclability due to the high stability, and the maximum sorption amount could be retained after 3 cycles. This study paves a new way towards opening up MOFs' potential application in capturing radioactive iodine to protect the environment.
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