Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 68, Issue 7, Pages 1375-1379Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2007.02.032
Keywords
nanostructures; metals; crystal growth; microstructure
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Copper microspheres assembled with nanoparticles have been synthesized by a simple solvothermal route at 160 degrees C for 24 h. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectrometer (EDX), transmission electron microscopy (TEM) and electron diffraction (ED) techniques. The results show that the diameters of the microspheres range from 2 to 4 mu m. The formation mechanism of the morphology control over the copper microspheres assembled by nanoparticles was investigated; the use of polyvinylpyrrolidone (PVP) as the surfactant and the choice of N,N-dimethylformamide (DMF) as the reducing agent were found to be important for the final generation of copper microspheres. (c) 2007 Elsevier Ltd. All rights reserved.
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