A versatile MOF-based trap for heavy metal ion capture and dispersion

Yaguang Peng, Hongliang Huang (), Yuxi Zhang, Chufan Kang, Shuangming Chen, Li Song, Dahuan Liu and Chongli Zhong ()
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Yaguang Peng: Beijing University of Chemical Technology
Hongliang Huang: Beijing University of Chemical Technology
Yuxi Zhang: Beijing University of Chemical Technology
Chufan Kang: Beijing University of Chemical Technology
Shuangming Chen: University of Science and Technology of China
Li Song: University of Science and Technology of China
Dahuan Liu: Beijing University of Chemical Technology
Chongli Zhong: Beijing University of Chemical Technology

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract Current technologies for removing heavy metal ions are typically metal ion specific. Herein we report the development of a broad-spectrum heavy metal ion trap by incorporation of ethylenediaminetetraacetic acid into a robust metal-organic framework. The capture experiments for a total of 22 heavy metal ions, covering hard, soft, and borderline Lewis metal ions, show that the trap is very effective, with removal efficiencies of >99% for single-component adsorption, multi-component adsorption, or in breakthrough processes. The material can also serve as a host for metal ion loading with arbitrary selections of metal ion amounts/types with a controllable uptake ratio to prepare well-dispersed single or multiple metal catalysts. This is supported by the excellent performance of the prepared Pd2+-loaded composite toward the Suzuki coupling reaction. This work proposes a versatile heavy metal ion trap that may find applications in the fields of separation and catalysis.

Date: 2018
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DOI: 10.1038/s41467-017-02600-2

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