Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 167, Issue 1, Pages 28-33Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/jssc.2002.9610
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Copper and silver nanocrystalline chalcogenides, Cu2-xSe, Cu2Te, Ag2Se, and Ag2Te, have been successfully synthesized in a mixture of ethylenediamine and hydrazine hydrate as a solvent at room temperature. Products showed different morphologies, such as nanotubes, nanorods, and nanoparticles. The results indicated that the coordination and chelation abilities of ethylenediamine play an important role in the formation of one-dimensional nanocrystalline binary chalcogenides, and hydrazine hydrate is crucial to the electron transfer in the room temperature reactions. These transition-metal nanocrystalline chalcogenides as prepared were analyzed by X-ray powder diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. The UV-Vis absorption properties of these nanocrystals were also measured. (C) 2002 Elsevier Science (USA).
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