热蒸发制备ZnO纳米材料形貌控制与生长动力学

Morphology Control and Growth Dynamics of ZnO Nanomaterials Prepared by Thermal Evaporation Method

分别以Zn粉、ZnO/C混合粉为原料,采用物理热蒸发方法,通过调控蒸发源与沉积区的距离、蒸发温度等条件,制备得到了棒状、线状、树枝状、糖葫芦状等形状各异的ZnO纳米材料,并对ZnO纳米材料的生长机制和动力学进行了初步探讨。

ZnO nanomaterials with different shapes such as rod,wire,branched-tree like and tied-ball like were synthesized by thermal evaporation method using Zn powders and ZnO/C mixtures as raw materials.The growth mechanism and dynamics of ZnO nanomaterials were proposed by analyzing the influential factors on the microstructures of the products,such as the distance of deposition area from the evaporation area of raw materials(the highest temperature spot of the furnace),evaporation temperature,deposition time,flux of carrier gases,and so on.