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低温条件下(95℃),采用ZnO种子辅助化学反应法,成功制备了宏量直、细的ZnO纳米棒;用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等分析手段对纳米棒的结构和形貌进行了表征;同时还对ZnO纳米棒的形成机理作了分析;并以ZnO纳米棒作为光催化剂,对甲基橙(MO)溶液进行了光催化实验。结果表明,ZnO与Zn源的摩尔比对ZnO纳米棒的形貌影响很大,PVA通过空间位阻效应控制ZnO纳米棒的长度,ZnO纳米棒有较好的光催化活性。
The ZnO nanorods were successfully prepared by ZnO seed assisted chemical reaction at low temperature (95 ℃). The morphology of ZnO nanorods was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) The structure and morphology of the nanorods were also characterized. Meanwhile, the formation mechanism of ZnO nanorods was also analyzed. The photocatalytic activity of methyl orange (MO) solution was investigated by using ZnO nanorods as photocatalyst . The results showed that the molar ratio of ZnO to Zn had a great influence on the morphology of ZnO nanorods. PVA controlled the length of ZnO nanorods by steric hindrance, and ZnO nanorods had good photocatalytic activity.