Bi Leyao, Fu Boyan, Lin Jiahui, Wen Junsheng, Fu Jiaxing, Tian Wenyue, Su Ningning, Zou Binglin, Wang Chunjie, Wang Yue
College of Physical Science and Technology, Bohai University, Jinzhou, 121013, China.
College of Semiconductors and Physics, North University, Taiyuan, 030051, China.
Mikrochim Acta. 2025 Sep 9;192(10):650. doi: 10.1007/s00604-025-07518-x.
Soda biscuit-like Ag-ZnO@ZIF-8 heterostructures were successfully synthesized using a secondary hydrothermal method for the first time, demonstrating exceptional ethylene glycol sensing performance. The sample (2-Methylimidazol (MeIm) concentration of 0.04 g) exhibits a remarkable response value of 1325.50 to 100 ppm ethylene glycol at 240 °C, along with a rapid response time of merely 7 s. Additionally, it displays outstanding gas selectivity (k = 28.63-696.90), great reproducibility and long-term stability. Further experiments indicate that the enhancement of the composite material's gas sensing performance can be primarily attributed to the interfacial electron transfer effect, the abundance of oxygen vacancies, and the synergistic interactions within the heterostructures. Overall, this study lays a solid theoretical foundation for the practical detection applications of ethylene glycol and provides new insights into the research on gas sensors based on ZnO-organic frameworks.
首次采用二次水热法成功合成了苏打饼干状的Ag-ZnO@ZIF-8异质结构，展现出优异的乙二醇传感性能。该样品（2-甲基咪唑（MeIm）浓度为0.04 g）在240℃下对100 ppm乙二醇表现出1325.50的显著响应值，响应时间仅为7秒，十分迅速。此外，它还具有出色的气体选择性（k = 28.63 - 696.90）、良好的重现性和长期稳定性。进一步的实验表明，复合材料气敏性能的增强主要归因于界面电子转移效应、丰富的氧空位以及异质结构内的协同相互作用。总体而言，本研究为乙二醇的实际检测应用奠定了坚实的理论基础，并为基于ZnO-有机框架的气体传感器研究提供了新的见解。
