Five Transition Metal-Mixed Germanium Chalcogenide Materials: Solvothermal Syntheses, Crystal Structures,
Hong Pan1, Li Wang1, Gele Teri2
1College of Chemistry and Environmental Science, Key Laboratory of Advanced Materials Chemistry and Devices (AMC&DLab) of the Department of Education Inner Mongolia Autonomous Region, Inner Mongolia Normal University, Hohhot 010022, China.
Abstract:
Germanium chalcogenides have attracted wide attention in inorganic chemistry because of their flexible structure and rich properties. Five new germanium chalcogenides containing transition metals such as manganese, zinc, and cadmium were synthesized by solvothermal methods using alkali metals as structural directing agents. Rb2MnGeSe4 (1), Cs2MnGeSe4 (2), and Cs2ZnGeSe4 (3) have a one-dimensional chain structure and Rb2Zn2GeSe4·H2O (4) and Rb2CdGeSe4 (5) have a two-dimensional layer structure. The electronic structure, band gap, and photocurrent response of compounds 1-5 have been comprehensively analyzed. Due to the two-dimensional layered structure of compounds 4 and 5, we studied their ion-exchange properties. Compounds 4 and 5 showed excellent ion-exchange properties and could be used as potential ion-exchange materials for the absorption of radioactive elements in nuclear wastewater.
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