中文摘要：

以二水合醋酸锌为原料,以十二烷基苯磺酸钠为表面修饰剂,利用微乳液法合成了结晶良好的ZnO纳米棒。利用X射线衍射仪、扫描电子显微镜和高分辨透射电子显微镜对所得产物的晶体结构和形貌进行了表征。结果表明：所得的ZnO纳米棒具有六方纤锌矿结构,且尺寸分布均匀,直径为20～30 nm,长度为1.0μm。利用所得ZnO纳米棒制备了气敏元件,并对其气敏特性进行了测试。结果表明：ZnO纳米棒气敏元件在430℃的工作温度下,对丙酮气体具有良好的灵敏度和选择性。当丙酮气体的浓度为1.0×10-5时,该气体传感器的检测灵敏度可达到11。

英文摘要：

ZnO nanorods were synthesized with ZnAc2·2H2O as a zinc source and dodecyl benzene sulfonic acid sodium salt（DBS） as a modifying agent via a microemulsion method.The crystal structure and morphology of the as-synthesized product were charac-terized by X-ray diffractometer,scanning electron microscope and high-resolution transmission electron microscope.The results show that the prepared products have a wurtzite structure.The diamerter of ZnO nanorods is in the range of 20-30 nm and the length is 1.0 μm.Gas sensors were fabricated from the well-dispersed ZnO nanorods and their gas-sensing properties were measured.ZnO nano-rods sensors had a good sensitivity/selectivity to acetone gas at 430 ℃.The sensing response of the ZnO nanorods sensor to 1.0 × 10-5 acetone gas could reach 11.