材料科学
沸石咪唑盐骨架
化学电阻器
选择性
纳米纤维
检出限
静电纺丝
咪唑酯
丙酮
异质结
吸附
纳米技术
金属有机骨架
化学工程
光电子学
色谱法
有机化学
聚合物
复合材料
催化作用
化学
工程类
作者
Jincheng Wu,Zheyang Zheng,Hanwen Chi,Jie Jiang,Liping Zhu,Zhizhen Ye
标识
DOI:10.1021/acsami.3c15566
摘要
Gas sensors for acetone detection have received considerable attention because acetone has a significant influence on both the environment and human health, e.g., it is flammable and toxic and may be related to blood glucose levels. However, achieving high sensitivity and selectivity at low concentrations is still a great challenge to date. Here, we report a unique chemiresistive gas sensor for acetone detection, which is composed of In2O3 nanofibers loaded with a porous Co-based zeolitic imidazolate framework (ZIF-67)-derived Co3O4 cage prepared by simple electrospinning and solvothermal methods. The ZIF-67-derived oxide cage/nanofiber Co3O4/In2O3 heterostructure has abundant reversible active adsorption/reaction sites and a type-I heterojunction, resulting in an ultrasensitive response of 954-50 ppm acetone at 300 °C. In addition, it demonstrates a low detection limit of 18.8 ppb, a fast response time of 4 s, good selectivity and repeatability, acceptable humidity interference, and long-term stability. With such excellent sensing performance to acetone, our chemiresistive gas sensor could be potentially applied for environmental monitoring and early diagnosis of diabetes.
科研通智能强力驱动
Strongly Powered by AbleSci AI