期刊
MATERIALS LETTERS
卷 62, 期 17-18, 页码 2567-2570出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2007.12.050
关键词
crystal growth; nanomaterial; p-type semiconductors; diffusion-limited process
Non-stoichiometric copper sulfides (Cu7S4), With uniform hexapetalous snowflake-like morphology in high yield have been synthesized successfully by a simple and facile one-step solvothermal route with a low temperature (150 degrees C). Copper chloride and thiourea were chosen as the reactants in an ethylenediamine solution. The role of ethylenediamine as a structure-directing coordination molecular template responsible for the morphologies of the copper sulfides and its role as a reducing agent for the non-stoichiometric have been discussed. In addition, temporal growth of the dendrites can be readily followed in this preparation via time-resolved microscopic analysis. The formation mechanism based on the experiments has been proposed. (C) 2007 Elsevier B.V. All rights reserved.
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