纳米片
材料科学
退火(玻璃)
氧气
陶瓷
选择性
纳米技术
原位
氮气
化学工程
分析化学(期刊)
光电子学
复合材料
化学
催化作用
环境化学
生物化学
有机化学
工程类
作者
Yanghai Gui,Linlin Qian,Kuan Tian,Jintao Wu,Yuansheng Tu,Xiaoyun Qin,Xiaomei Qin
出处
期刊:IEEE Sensors Journal
[Institute of Electrical and Electronics Engineers]
日期:2022-11-09
卷期号:23 (1): 119-126
被引量:11
标识
DOI:10.1109/jsen.2022.3219614
摘要
Ultrathin WO3 nanosheets (~10 nm) were successfully in situ grown on the surface of ceramic tubes by a facile method. Subsequently, abundant oxygen vacancies were purposely created on the surface of nanosheets through a direct annealing process. It was found that the increase of oxygen vacancies was the main reason for the great improvement of nitrogen dioxide (NO2) gas sensing performance. The gas sensor based on this oxygen defect-rich ultrathin WO3 nanosheet exhibited good selectivity and ultrafast response (6 s to 5 ppm) and recovery (about 5 s to 100 ppm) to NO2. The gas sensing response was about 234 to 100 ppm NO2 at 210 °C. Even at 30 °C, the gas sensor still presents a high response to NO2 (the response value of 10.48). Obviously, this work provides a viable strategy for the rapid detection of NO2 in daily life and industry.
科研通智能强力驱动
Strongly Powered by AbleSci AI