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Issue 47, 2019
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One-pot synthesis of mercapto functionalized Zr-MOFs for the enhanced removal of Hg2+ ions from water

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Abstract

Mercapto functionalized Zr-MOFs have been developed via a one-pot synthesis for the selective adsorption of Hg2+ ions. Mercaptoacetic acid (MAA) or alpha lipoic acid (ALA) was used as the modulators and functionalized molecules to synthesize mercapto functionalized Zr-MOFs (Zr-MOFs-SH(O)). In comparison with the mercapto functionalized Zr-MOFs via the traditional postsynthetic modification (Zr-MOFs-SH(P)), Zr-MOFs-SH(O) had a much higher content of –SH groups, thus leading to a much higher adsorption capacity for Hg2+ ions. In particular, PCN-224-MAA(O) had an adsorption capacity for Hg2+ ions up to 843.6 mg g−1, which is much higher than that of PCN-224-MAA(P) (138.5 mg g−1). Additionally, PCN-224-MAA(O) can be used to reduce Hg2+ ion concentrations (5–20 μg L−1) in water to the limit acceptable (1 μg L−1) for drinking water. Moreover, PCN-224-MAA(O) also exhibited good selectivity, recyclability, and chemical stability.

Graphical abstract: One-pot synthesis of mercapto functionalized Zr-MOFs for the enhanced removal of Hg2+ ions from water

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Supplementary files

Article information


Submitted
06 May 2019
Accepted
16 May 2019
First published
16 May 2019

Chem. Commun., 2019,55, 6775-6778
Article type
Communication

One-pot synthesis of mercapto functionalized Zr-MOFs for the enhanced removal of Hg2+ ions from water

D. Lin, X. Liu, R. Huang, W. Qi, R. Su and Z. He, Chem. Commun., 2019, 55, 6775
DOI: 10.1039/C9CC03481A

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