Abstract
The selective capture of Cs+ from solution is relevant to the remediation of nuclear waste and remains a significant challenge. Here we describe a new framework composed of [(CH3)2 NH 2]+ and [Ga2 Sb2 S7] 2- layers, which are perforated with holes. Shape selectivity couples with framework flexibility, allowing the compound to respond to the ion-exchange process. The size, shape and flexibility of the holes allow Cs+ ions in an aqueous solution to selectively pass through and enter the material via an ion-exchange process. Following capture, the structure dynamically closes its holes in a manner reminiscent of a Venus flytrap, which prevents the Cs + ions from leaching out. This process has useful implications in the separation science of Cs as it relates to the clean-up of nuclear waste. The dynamic response we describe here provides important insights for designing new materials for the selective removal of difficult-to-capture ions.
| Original language | English |
|---|---|
| Pages (from-to) | 187-191 |
| Number of pages | 5 |
| Journal | Nature Chemistry |
| Volume | 2 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2010 |
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ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
Cite this
Selective incarceration of caesium ions by Venus flytrap action of a flexible framework sulfide. / Ding, Nan; Kanatzidis, Mercouri G.
In: Nature Chemistry, Vol. 2, No. 3, 03.2010, p. 187-191.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Selective incarceration of caesium ions by Venus flytrap action of a flexible framework sulfide
AU - Ding, Nan
AU - Kanatzidis, Mercouri G
PY - 2010/3
Y1 - 2010/3
N2 - The selective capture of Cs+ from solution is relevant to the remediation of nuclear waste and remains a significant challenge. Here we describe a new framework composed of [(CH3)2 NH 2]+ and [Ga2 Sb2 S7] 2- layers, which are perforated with holes. Shape selectivity couples with framework flexibility, allowing the compound to respond to the ion-exchange process. The size, shape and flexibility of the holes allow Cs+ ions in an aqueous solution to selectively pass through and enter the material via an ion-exchange process. Following capture, the structure dynamically closes its holes in a manner reminiscent of a Venus flytrap, which prevents the Cs + ions from leaching out. This process has useful implications in the separation science of Cs as it relates to the clean-up of nuclear waste. The dynamic response we describe here provides important insights for designing new materials for the selective removal of difficult-to-capture ions.
AB - The selective capture of Cs+ from solution is relevant to the remediation of nuclear waste and remains a significant challenge. Here we describe a new framework composed of [(CH3)2 NH 2]+ and [Ga2 Sb2 S7] 2- layers, which are perforated with holes. Shape selectivity couples with framework flexibility, allowing the compound to respond to the ion-exchange process. The size, shape and flexibility of the holes allow Cs+ ions in an aqueous solution to selectively pass through and enter the material via an ion-exchange process. Following capture, the structure dynamically closes its holes in a manner reminiscent of a Venus flytrap, which prevents the Cs + ions from leaching out. This process has useful implications in the separation science of Cs as it relates to the clean-up of nuclear waste. The dynamic response we describe here provides important insights for designing new materials for the selective removal of difficult-to-capture ions.
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U2 - 10.1038/nchem.519
DO - 10.1038/nchem.519
M3 - Article
VL - 2
SP - 187
EP - 191
JO - Nature Chemistry
JF - Nature Chemistry
SN - 1755-4330
IS - 3
ER -