Acidity and Cd2+ fluorescent sensing and selective CO2 adsorption by a water-stable Eu-MOF
Wei-Ming Liao1, Mei-Juan Wei2, Jun-Ting Mo2
1MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China. panm@mail.sysu.edu.cn and School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China.
Abstract:
A new Eu-MOF was designed from an amino-functionalized ligand and Eu(iii) ions under solvothermal conditions. It is a highly porous, water-stable, and luminescent material, exhibiting pH sensing in the acidic range of pH = 7-3 with selective detection for Cd2+ by an enhanced fluorescence of ∼23-fold against a series of metal ions. Gas adsorption performance shows that Eu-MOF exhibits a high CO2/N2 (15/85) selectivity of 109.4 at 273 K and 1 atm. This performance was superior to that of most reported Ln-MOFs owing to its appropriate pore size, dipole-dipole interaction and donor-acceptor Lewis affinities.
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