Abstract
Removal of 137 Cs + , one of the most hazardous radionuclides, from nuclear waste, is a challenging task because it requires simultaneously high capacity and high selectivity. Chalcogenides offer a great opportunity to design and create high-performance 137 Cs + absorbents. We report a new material (InSnOS) with facile ion-exchange properties. The anionic framework is based on corner-shared pseudo-T4 supertetrahedral oxysulfide [In 8 Sn 12 O 10 S 34 ] 16- clusters, resulting in the formula [In 8 Sn 12 O 10 S 32 ] 12- . The crystal structure features the interpenetration of two independent oxysulfide cluster frameworks which create pincer cavities based on sulfur atoms that prove highly effective for capturing Cs + ions. The binding mode of the Cs + ions by the material was determined by a single crystal structure refinement of a fully ion-exchanged single crystal. The structure determinations show that the small pores created by the two interpenetrating frameworks are the optimal size for capturing Cs + . This advantage makes the material very effective for the removal and recovery of 137 Cs + from aqueous solution. This framework shows not only extremely high exchange capacity (q m ), 537.7 mg per g of anionic [In 8 Sn 12 O 10 S 32 ] 12- framework, ranking it among the best reported Cs + sorbents, but also superior affinity and selectivity when using complex solutions simulating industrial and nuclear waste conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 1628-1634 |
| Number of pages | 7 |
| Journal | Chemistry of Materials |
| Volume | 31 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Mar 12 2019 |
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ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Materials Chemistry
Cite this
Highly Selective Radioactive 137 Cs + Capture in an Open-Framework Oxysulfide Based on Supertetrahedral Cluster . / Wang, Li; Pei, Huan; Sarma, Debajit; Zhang, Xian Ming; MacRenaris, Keith; Malliakas, Christos D.; Kanatzidis, Mercouri G.
In: Chemistry of Materials, Vol. 31, No. 5, 12.03.2019, p. 1628-1634.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Highly Selective Radioactive 137 Cs + Capture in an Open-Framework Oxysulfide Based on Supertetrahedral Cluster
AU - Wang, Li
AU - Pei, Huan
AU - Sarma, Debajit
AU - Zhang, Xian Ming
AU - MacRenaris, Keith
AU - Malliakas, Christos D.
AU - Kanatzidis, Mercouri G
PY - 2019/3/12
Y1 - 2019/3/12
N2 - Removal of 137 Cs + , one of the most hazardous radionuclides, from nuclear waste, is a challenging task because it requires simultaneously high capacity and high selectivity. Chalcogenides offer a great opportunity to design and create high-performance 137 Cs + absorbents. We report a new material (InSnOS) with facile ion-exchange properties. The anionic framework is based on corner-shared pseudo-T4 supertetrahedral oxysulfide [In 8 Sn 12 O 10 S 34 ] 16- clusters, resulting in the formula [In 8 Sn 12 O 10 S 32 ] 12- . The crystal structure features the interpenetration of two independent oxysulfide cluster frameworks which create pincer cavities based on sulfur atoms that prove highly effective for capturing Cs + ions. The binding mode of the Cs + ions by the material was determined by a single crystal structure refinement of a fully ion-exchanged single crystal. The structure determinations show that the small pores created by the two interpenetrating frameworks are the optimal size for capturing Cs + . This advantage makes the material very effective for the removal and recovery of 137 Cs + from aqueous solution. This framework shows not only extremely high exchange capacity (q m ), 537.7 mg per g of anionic [In 8 Sn 12 O 10 S 32 ] 12- framework, ranking it among the best reported Cs + sorbents, but also superior affinity and selectivity when using complex solutions simulating industrial and nuclear waste conditions.
AB - Removal of 137 Cs + , one of the most hazardous radionuclides, from nuclear waste, is a challenging task because it requires simultaneously high capacity and high selectivity. Chalcogenides offer a great opportunity to design and create high-performance 137 Cs + absorbents. We report a new material (InSnOS) with facile ion-exchange properties. The anionic framework is based on corner-shared pseudo-T4 supertetrahedral oxysulfide [In 8 Sn 12 O 10 S 34 ] 16- clusters, resulting in the formula [In 8 Sn 12 O 10 S 32 ] 12- . The crystal structure features the interpenetration of two independent oxysulfide cluster frameworks which create pincer cavities based on sulfur atoms that prove highly effective for capturing Cs + ions. The binding mode of the Cs + ions by the material was determined by a single crystal structure refinement of a fully ion-exchanged single crystal. The structure determinations show that the small pores created by the two interpenetrating frameworks are the optimal size for capturing Cs + . This advantage makes the material very effective for the removal and recovery of 137 Cs + from aqueous solution. This framework shows not only extremely high exchange capacity (q m ), 537.7 mg per g of anionic [In 8 Sn 12 O 10 S 32 ] 12- framework, ranking it among the best reported Cs + sorbents, but also superior affinity and selectivity when using complex solutions simulating industrial and nuclear waste conditions.
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U2 - 10.1021/acs.chemmater.8b04877
DO - 10.1021/acs.chemmater.8b04877
M3 - Article
VL - 31
SP - 1628
EP - 1634
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 5
ER -