Ha, Thanh Duy Cam 이희현 Kang, Yeo Kyung Ahn, Kyunghan Jin, Hyeong Min Chung, In Kang, Byungman Oh, Youngtak Kim, Myung-Gil 2024-01-12T02:34:00Z 2024-01-12T02:34:00Z 2023-01-09 2022-12 2041-1723 https://pubs.kist.re.kr/handle/201004/75878 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. English Nature Publishing Group Multiscale structural control of thiostannate chalcogels with two-dimensional crystalline constituents Article 10.1038/s41467-022-35386-z 1 Nature Communications, v.13, no.1 Nature Communications 13 1 Y scie scopus 000984474000006 Multidisciplinary Sciences Science & Technology - Other Topics Article GRAPHENE OXIDE HIGHLY EFFICIENT FACILE SYNTHESIS CS+ REMEDIATION SULFIDE AEROGELS ADSORPTION CESIUM TRANSFORMATION SPECTROSCOPY