Synthesis of Bi Nanowires and Nanoplates

Bi nanowires and nanoplates were synthesized by controlling the composition of the mixture solution of water and ethylenediamine.The effect of the composition exchange on the morphology and structure was investigated.The results show that the formation mechanisms of the nanowires and nanoplates can be ascribed to the template effect of ethylenediamine and ethylenediamine-induced transition from thermodynamic to dynamic control of the growth.The volumetric thermal expansion coefficient of nanowires decreases with increasing temperature and becomes negative at the conversion temperature (about 455℃).