Highest and fastest removal rate of Pb-II ions through rational functionalized decoration of a metal-organic framework cavity

Afshariazar, Farzaneh, Morsali, Ali, Wang, Jun, and Junk, Peter C. (2020) Highest and fastest removal rate of Pb-II ions through rational functionalized decoration of a metal-organic framework cavity. Chemistry: a European journal, 26 (6). pp. 1355-1362.

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Abstract

To overcome the challenge of developing a multipurpose adsorbent for effective removal of toxic and carcinogenic Pb-II ions from aqueous solutions, a made-for-purpose functional group (N-1,N-2-di(pyridine-4-yl)oxalamide) was rationally designed and incorporated into the cavities of a Zn metal-organic framework (MOF), namely, TMU-56. Large enough pore size along with high densities of strong metal chelating sites lead not only to the highest uptake capacity for Pb-II ions, but also the fastest removal rate that has ever been reported for functionalized MOFs, occurring in just 20 s. Moreover, high concentrations of lead ions favor the ion exchange reaction, resulting in a high degree of metal exchange. In addition, TMU-56 can be a practical adsorbent because of its notable performance in the simultaneous removal of several toxic and carcinogenic heavy metals from wastewater, which has rare precedence.

Item ID: 62210
Item Type: Article (Research - C1)
ISSN: 1521-3765
Keywords: adsorption, metal-organic frameworks, Pb-II ions, wastewater
Copyright Information: © 2019 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim
Date Deposited: 05 Feb 2020 07:35
FoR Codes: 34 CHEMICAL SCIENCES > 3402 Inorganic chemistry > 340207 Metal organic frameworks @ 50%
34 CHEMICAL SCIENCES > 3402 Inorganic chemistry > 340299 Inorganic chemistry not elsewhere classified @ 50%
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