通过溶剂热法, 在180℃, 利用聚丙烯酰胺辅助合成了直径约为20nm, 长度为几百纳米到几微米的CdSe纳米线. 通过XRD、TEM、HRTEM表征了产物的结构和形貌, 并且讨论了反应时间对产物形貌的影响以及聚合物辅助纳米线生长的机制. 通过紫外-可见光谱和光致发光光谱研究了纳米线的光学性能, 在660nm处有一明显的吸收峰, 与体相材料相比具有明显的量子尺寸效应.
CdSe nanowires with an average diameter of 20nm and lengths of several hundreds of nanometers to several micrometers were synthesized by a solvothermal method assisted with polyacrylamide (PAM) at 180℃. The structure and morphology of as prepared products were characterized by XRD, TEM and HRTEM. Also, the effect of reaction time on nanowire growth and the growth mechanism were discussed. The optical properties of CdSe nanowieres were investigated by UV-vis and fluorescence spectroscopy measurements. An absorption peak found at 660nm in the UV-vis spectrum indicates that the as-prepared CdSe nanowires show a strong blue shift due to quantum confinement effect.
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