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Syntheses, structures, and photocatalytic properties of open-framework Ag-Sn-S compounds
Yanhua Li1, Xuedan Song1, Yan Liu1
1Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China. jimin@dlut.edu.cn ylan@dlut.edu.cn.
Abstract:
Four open-framework Ag-Sn-S compounds K2Ag2Sn2S6 (1); K2Ag2SnS4 (2); Rb2Ag2SnS4 (3); and Cs2Ag2SnS4 (4) have been synthesized using a solvothermal method. Compound 1 possesses a unique three-dimensional (3D) structure in which Ag+ ions are two-coordinated. Compounds 2-4 have the same layered structure in which Ag+ ions are tetrahedrally coordinated. Photocatalytic degradation properties of methylene blue have been investigated and compound 1 displays excellent photodegradation activities. The photoelectric response properties, optical properties, and theoretical calculations of these compounds have also been studied.
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