摘要
采用溶剂热法制备了ZIF-8/ZIF-67以及Au掺杂的ZIF-8/ZIF-67双金属有机框架,并经过高温退火形成相应的衍生物纳米结构。使用扫描电子显微镜(SEM)以及透射电子显微镜(TEM)对制备的纳米材料进行分析,采用实验室自制的气体传感器测试系统对基于上述纳米材料制备的两种气体传感器(纯ZIF-8/ZIF-67气体传感器、Au-ZIF-8/ZIF-67气体传感器)的气敏性能进行研究。测试结果表明,Au-ZIF-8/ZIF-67传感器对丙酮(C_(3)H_(6)O)气体的气敏性能优于纯ZIF-8/ZIF-67传感器。在最佳工作温度300℃下,Au-ZIF-8/ZIF-67气体传感器对体积分数为1×10^(-4)C_(3)H_(6)O气体的响应度达到209.12,约为纯ZIF-8/ZIF-67气体传感器的11倍,并且该传感器能检测丙酮气体的最小体积分数为5×10^(-8)。此外,Au-ZIF-8/ZIF-67气体传感器还具有良好的重复性和长期稳定性。
ZIF-8/ZIF-67 and Au-doped ZIF-8/ZIF-67 bimetallic organic frameworks were prepared by solvothermal method and subsequently annealed at high temperatures to form derivative nanostructures.The prepared nanomaterials were analyzed by scanning electron microscope(SEM)and transmission electron microscope(TEM).By using the self-made gas sensor test system in the laboratory,the gas sensing properties of the two gas sensors(the pure ZIF-8/ZIF-67 gas sensor and Au-ZIF-8/ZIF-67 gas sensor)prepared based on the above nanomaterials were studied.The test results show that the gas sensing property of the Au-ZIF-8/ZIF-67 sensor to acetone(C_(3)H_(6)O)gas is better than that of the pure ZIF-8/ZIF-67 sensor.Under optimal operating temperature of 300℃,the response of the Au-ZIF-8/ZIF-67 gas sensor to C_(3)H_(6)O gas with a volume fraction of 1×10^(-4)reaches 209.12,which is about 11 times that of the pure ZIF-8/ZIF-67 gas sensor,and the sensor can detect the minimum volume fraction of acetone gas is 5×10^(-8).In addition,the Au-ZIF-8/ZIF-67 sensor also exhibits good reproducibility and long-term stability.
作者
胡悦
李凯
赵振廷
Hu Yue;Li Kai;Zhao Zhenting(Department of Electrical and Electronic Engineering,Guilin Institute of Information Technology,Guilin 541004,China;Guangdong Key Laboratory of Electronic Functional Materials and Devices,Huizhou University,Huizhou 516067,China)
出处
《微纳电子技术》
CAS
2024年第1期110-116,共7页
Micronanoelectronic Technology
基金
广东省普通高校特色创新类项目(2019KTSCX178)。
