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

Bo Zhang; Mei-Ling Feng; Hong-Hua Cui; Cheng-Feng Du; Xing-Hui Qi; Nan-Nan Shen; Xiao-Ying Huang

doi:10.1021/acs.inorgchem.5b01181

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

Inorg Chem. 2015 Sep 8;54(17):8474-81. doi: 10.1021/acs.inorgchem.5b01181. Epub 2015 Aug 20.

Authors

Bo Zhang^{1

2}, Mei-Ling Feng¹, Hong-Hua Cui¹, Cheng-Feng Du^{1

2}, Xing-Hui Qi^{1

3}, Nan-Nan Shen^{1

2}, Xiao-Ying Huang¹

Affiliations

¹ State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences , Fuzhou, Fujian 350002, P. R. China.
² University of Chinese Academy of Sciences , Beijing, 100049, P. R. China.
³ College of Chemistry, Fuzhou University , Fuzhou, Fujian 350002, P. R. China.

PMID: 26291119
DOI: 10.1021/acs.inorgchem.5b01181

Abstract

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(+), Mg(2+), and Ca(2+) ions. In addition, compound 1 displayed visible-light-driven photocatalytic activity for degradation of rhodamine B.