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Multiscale structural control of thiostannate chalcogels with two-dimensional crystalline constituents

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Title
Multiscale structural control of thiostannate chalcogels with two-dimensional crystalline constituents
Author(s)
Ha, Thanh Duy Cam; Lee, Heehyeon; Kang, Yeo Kyung; Ahn, Kyunghan; Jin, Hyeong Min; In Chung; Kang, Byungman; Oh, Youngtak; Kim, Myung-Gil
Publication Date
2022-12
Journal
Nature Communications, v.13, no.1
Publisher
Nature Research
Abstract
Chalcogenide aerogels (chalcogels) are amorphous structures widely known for their lack of localized structural control. This study, however, demonstrates a precise multiscale structural control through a thiostannate motif ([Sn2S6]4−)-transformation-induced self-assembly, yielding Na-Mn-Sn-S, Na-Mg-Sn-S, and Na-Sn(II)-Sn(IV)-S aerogels. The aerogels exhibited [Sn2S6]4−:Mn2+ stoichiometric-variation-induced-control of average specific surface areas (95–226 m2 g−1), thiostannate coordination networks (octahedral to tetrahedral), phase crystallinity (crystalline to amorphous), and hierarchical porous structures (micropore-intensive to mixed-pore state). In addition, these chalcogels successfully adopted the structural motifs and ion-exchange principles of two-dimensional layered metal sulfides (K2xMnxSn3-xS6, KMS-1), featuring a layer-by-layer stacking structure and effective radionuclide (Cs+, Sr2+)-control functionality. The thiostannate cluster-based gelation principle can be extended to afford Na-Mg-Sn-S and Na-Sn(II)-Sn(IV)-S chalcogels with the same structural features as the Na-Mn-Sn-S chalcogels (NMSCs). The study of NMSCs and their chalcogel family proves that the self-assembly principle of two-dimensional chalcogenide clusters can be used to design unique chalcogels with unprecedented structural hierarchy. © 2022, The Author(s).
URI
https://pr.ibs.re.kr/handle/8788114/12473
DOI
10.1038/s41467-022-35386-z
ISSN
2041-1723
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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