期刊
NANOTECHNOLOGY
卷 17, 期 15, 页码 3649-3654出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/17/15/005
关键词
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Octahedral CuS nanocages were synthesized by a solid-liquid reaction between solid Cu2O octahedra and thiourea solution at 90 degrees C. Octahedral Cu2O particles were used as the sacrificial cores, precursor and shape-controller. The transformation of octahedral Cu2O to hollow CuS octahedra was monitored by the TEM images and EDX spectra. A mechanism of mass diffusion followed by Ostwald ripening is proposed based on the evidence of electron microscope images. The critical size (d*) of the precursor for the formation of hollow structured CuS was estimated based on the proposed mechanism and the designed experiments.
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