Journal
MODERN PHYSICS LETTERS B
Volume 23, Issue 31-32, Pages 3817-3823Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217984909021879
Keywords
Nanocrystals; metalchalcogenide; crystal growth; crystal morphology
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A template-free solution method based on solid-liquid interface reaction has been developed for fabricating metal chalcogenide dendritic nanostructures. Well-defined PbSe. dendrites with four branches can be large-scale synthesized with metal lead foil as Pb2+ source and Na2SeO3 as Se2+ source in solvothermal conditions. The nanorods in each branch are parallel to each other in the same plane and are perpendicular to the trunk. It was found that PbSe cubes first formed on the lead substrate through a direct surface reaction and that subsequent crystal growth preferentially took place on the vertex of these PbSe cubes, leading to the formation of final branched dendrites. The current solid-iquid interface reaction has been extended to the synthesis of CuS micro-pine dendrites with copper foil and sulfur powder as reaction reagents
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