中文摘要：

采用低温水热法制备了ZnO材料,通过X射线衍射仪和扫描电镜分别对其结构和形貌进行了表征,并采用气敏测试仪对所制ZnO材料对三甲胺的气敏性进行了测试.结果表明,所得的ZnO材料具有六方纤锌矿结构,呈片状花形.此材料在340℃,对体积分数为1.00×10^-4三甲胺气体的灵敏度可达到63.72.随着三甲胺浓度的增加,灵敏度呈现线性增加的趋势.响应时间和恢复时间分别为4s和21s.此外,该样品具有呈现良好的选择性、重复性和长期稳定性.

英文摘要：

The ZnO material was prepared by low temperature hydrothermal method.The structure and morphology were characterized by XRD and SEM.And the trimethylamine-sensing properties of prepared ZnO were measured by the gas sensing instrument.The results show that the prepared ZnO material exhibits hexagonal wurtzite structure and sheet-assembled flower-like morphology.Moreover,its sensitivity can reach 63.72 towards 1.00×10^-4 trimethylamine at 340 ℃.The sensitivity increases linearly with increasing of the trimethylamine concentration.The response time and recovery time are 4 s and 21 s,respectively.In addition,the material shows excellent selectivity,repetition property and long-term stability.