ZnO纳米棒的低温湿化学制备

Synthesis of ZnO nanorods by wet-chemical method at low temperature

在低温反应条件下,通过超声的方法,以DBS作为表面活性剂,制备了ZnO纳米棒.化学反应的低温条件由冰水浴提供,温度为0～5℃.扫描电子显微镜和光学显微镜观察表明,所制备的纳米棒形状均一,截面为六方型,直径100nm,长度1μm;X射线衍射表征指出所得到的纳米棒为六方晶型.同时,我们也研究了反应温度、表面活性剂含量、超声、回流时间对ZnO纳米棒形貌的影响.与其它制备方法相比,低温与超声技术可以更为方便获得分布均一,长径比较小的ZnO纳米棒.

At low temperature the ZnO nanorods were synthesized by the refluxing method in the presence of DBS (Dodecyl benzene sulfonic acid sodiumsalt). The samples were characterized by SEM, optics microscopy and XRD techniques. The results showed that the ZnO nanorods were 100 nm in diameter and 1 μm in length. It was found that the parameters including the temperature, the content of surfactant, the ultrasonic and refluxing time had important influence on the formation of the ZnO nanorods. Compared with other methods, that used ultrasonic and low temperature conditions were key to form uniform ZnO nanorods with smaller diameter.