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A simple and Novel protocol for Li-trapping of POM/MOF nano-composite as a new adsorbent for CO2 uptake

Abstract

In the present article, a convenient and novel procedure for lithium ions-trapping over a polyoxometalate/metal organic framework nano-composite to synthesize a new class of porous composite materials for carbon capturing has been demonstrated. To this purpose, successful interaction of zeolitic imidazolate framework-8 (ZIF-8) with the water-soluble Keplerate-type polyoxometalate ({Mo132}) is accomplished and the POM/ZIF-8 nano-composite material (ZIF-8@{Mo132}) achieved. POM/ZIF-8 nano-composite enables to uptake of lithium functional groups (Li+ cations) due to existence of {Mo132} in its structure. As a result of interaction between ZIF-8@{Mo132} and an organolithium compound the Li-trapped POM/ZIF-8 nano-composite material (ZIF-8@{Mo132}@Li+), is readily obtained. In particular, ZIF-8@{Mo132}@Li+ nano-composite displays surprising enhancement for CO2 adsorption capacity as the most significant greenhouse gas. The CO2 uptake on ZIF-8@{Mo132}@Li+ is around 26.40 wt% while its capacity on the pristine ZIF-8 is only around 4 wt%. The presence of lithium cations inside and on the surface of the as-synthesized nano-composite plays a key role in the enhancement of CO2 storage.

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Publication details

The article was received on 16 Jan 2018, accepted on 15 Feb 2018 and first published on 15 Feb 2018


Article type: Paper
DOI: 10.1039/C8NJ00274F
Citation: New J. Chem., 2018, Accepted Manuscript
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    A simple and Novel protocol for Li-trapping of POM/MOF nano-composite as a new adsorbent for CO2 uptake

    M. Ghahramaninezhah, B. Soleimani and M. Niknam Shahrak, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ00274F

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