Syntheses, Crystal Structures, Ion-Exchange, and Photocatalytic Properties of Two Amine-Directed Ge–Sb–S Compounds

Among numerous heterometallic chalcogenidoantimonates, relatively a few amine-directed Ge–Sb–S compounds have been synthesized. Presented here are the solvothermal syntheses, crystal structures, and ion-exchange, optical, and photocatalytic properties of two novel amine-directed Ge–Sb–S compounds, n...

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Bibliographic Details
Published in:Inorganic chemistry 2015-09, Vol.54 (17), p.8474-8481
Main Authors: Zhang, Bo, Feng, Mei-Ling, Cui, Hong-Hua, Du, Cheng-Feng, Qi, Xing-Hui, Shen, Nan-Nan, Huang, Xiao-Ying
Format: Article
Language:English
Subjects:
Cations
Crystal structure
Degradation
Optical properties
Photocatalysis
Rotational
Slabs
Two dimensional
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Summary:Among numerous heterometallic chalcogenidoantimonates, relatively a few amine-directed Ge–Sb–S compounds have been synthesized. Presented here are the solvothermal syntheses, crystal structures, and ion-exchange, optical, and photocatalytic properties of two novel amine-directed Ge–Sb–S compounds, namely, [CH3NH3]20Ge10Sb28S72·7H2O (1) and [(CH3CH2CH2)2NH2]3Ge3Sb5S15·0.5­(C2H5OH) (2). The structure of 1 features an unprecedented two-dimensional Ge–Sb–S double-layer composed of two twofold rotational symmetry-related thick [Ge8Sb28S72] n 28n– single layers adhered via vertex-sharing [GeS4] tetrahedra. Compound 2 features a unique [Ge3Sb5S15] n 3n– slab perforated with large elliptic-like windows. Remarkably, compound 1 exhibited excellent Cs+ ion-exchange property despite the presence of excess competitive cations, such as Na+, K+, Mg2+, and Ca2+ ions. In addition, compound 1 displayed visible-light-driven photocatalytic activity for degradation of rhodamine B.
ISSN:0020-1669
1520-510X
DOI:10.1021/acs.inorgchem.5b01181