Rapid elongation of CdS nanowire at room temperature

摘要

The CdS nanowires synthesized by solvothermal route are rapidly elongated in the presence of the ethylenediamine by ultrosonication method at room temperature. Transmission electron microscopy (TEM) analysis reveals that the influential factors on the rapid elongate process are the concentration of ethylenediamine and duration of the ultrosonication reaction. The elongated CdS nanowires are further characterized by UV-vis absorption spectra, which has no apparent difference in the position of the maximum absorption peak comparing with the starting CdS nanowires synthesized by solvothermal method. A mechanism of oriented attachment is proposed to explain the phenomena based on a series of experimental results.