Resistive-type VOCs and pollution gases sensor based on SnO2: A review

被引:59
|
作者
Kang, Xiaoying [1 ,2 ]
Deng, Nanping [1 ,3 ]
Yan, Zirui [1 ,2 ]
Pan, Yingwen [1 ,2 ]
Sun, Wei [1 ,2 ]
Zhang, Yaofang [1 ,2 ]
机构
[1] Tiangong Univ, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China
[2] Tiangong Univ, Sch Phys Sci & Technol, Tianjin 300387, Peoples R China
[3] Tiangong Univ, Sch Text Sci & Engn, Tianjin 300387, Peoples R China
基金
美国国家科学基金会;
关键词
VOCs; Pollution gas; Gas sensor; SnO2; Composites; TRIETHYLAMINE-SENSING PROPERTIES; ONE-STEP SYNTHESIS; ROOM-TEMPERATURE; THIN-FILM; HYDROTHERMAL SYNTHESIS; OPERATING TEMPERATURE; SELECTIVE DETECTION; FACILE FABRICATION; AU NANOPARTICLES; FAST-RESPONSE;
D O I
10.1016/j.mssp.2021.106246
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The uncontrolled emission of toxic and harmful gases will seriously restrict the sustainable development of social economy system and threaten people's health. Therefore, it is essential to detect and monitor them effectively and quickly. Metal oxide sensor is one of the most common sensors to detect these gases, with high stability, strong selectivity and other characteristics. Among them, tin dioxide (SnO2) based sensor has been widely used due to its semiconductor sensor characteristics. This review not only presents the sensing mechanism of SnO2 sensors, but also summarizes and reviews the various methodological used to improve the gas sensing performance of SnO2 based gas sensors, including changing the morphology and structure, doping, and dynamic response and sensor arrays. The composite sensor can significantly improve the sensing performance of the gas sensor against toxic and harmful gases. Finally, possible solutions are proposed for the existing difficulties of SnO2-based gas sensors.
引用
收藏
页数:17
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