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

Abstract

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

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Supplementary files

Publication details

The article was received on 06 May 2019, accepted on 16 May 2019 and first published on 16 May 2019


Article type: Communication
DOI: 10.1039/C9CC03481A
Chem. Commun., 2019, Accepted Manuscript

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    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, Accepted Manuscript , DOI: 10.1039/C9CC03481A

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