摘要
采用低温水热法制备了ZnO材料,并通过X射线衍射谱(XRD)进行了结构表征,结果显示,所得的ZnO材料具有六方纤锌矿结构.气敏测试结果发现此材料在300℃,对体积分数为100×10-6的甲醛气体,灵敏度可达到8.55,对1 000×10-6的甲醛的灵敏度为59.46.随着甲醛体积分数的增加,灵敏度呈现线性增加的趋势.另外,该样具有较快的响应时间(22 s)、恢复时间(16 s)和较好的选择性.
A ZnO material was prepared by low temperature hydrothermal method.The structure was characterized by X-ray diffraction ( XRD ) and the results showed that prepared ZnO material exhibits hexagonal wurtzite structure.The gas sensing test results show that the ZnO corresponding sensitivity obtains 8.55 and 59.46 towards 100 × 10-6 and 1 000 × 10-6 formaldehyde at 300 ℃,respectively.The sensitivity towards formaldehyde increases linearly with the concentration increment of the formaldehyde.In addition,ZnO material shows shorter response time ( 22 s) and recovery time ( 16 s) and better selectivity.
出处
《材料与冶金学报》
CAS
北大核心
2013年第4期271-274,279,共5页
Journal of Materials and Metallurgy
基金
内蒙古自治区教育厅高等学校基金项目(NO.NJZY13141)
关键词
水热法
ZNO
甲醛
气敏性能
hydrothermal method
ZnO
formaldehyde
gassensing properties