Enhanced acetone sensing performance based on hollow coral-like SnO2-ZnO composite nanofibers

被引：19
作者：
Li, Yujie [1 ,2 ]
Zhang, Haiming [1 ]
Zhang, Xiaohui [1 ]
Wei, Lijuan [1 ]
Zhang, Yue [1 ]
Hai, Guangyuan [1 ]
Sun, Yuxuan [1 ]
机构：
[1] Tianjin Polytech Univ, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China
[2] Tianjin Univ, Phys Dept, Renai Coll, Tianjin 301636, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS | 2019年 / 30卷 / 16期
关键词：
GAS SENSOR; HETEROSTRUCTURE; MICROSPHERES; FABRICATION;
D O I：
10.1007/s10854-019-01959-w
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 acetone sensors are designed based on hollow coral-like SnO2-ZnO nanofibers (NFs) composite structure through a simple one-step electrospinning method in this paper. Compared with pure SnO2, SnO2-ZnO sensor has greatly enhanced acetone sensing performance including excellent sensitivity, rapid response which are due to its larger specific surface area, more oxygen vacancies and n-n composite structures. The response of SnO2-ZnO NFs sensor (110.95) is 20 times higher than that of the SnO2 sensor (5.52) and achieves a rapid response/recovery process (within 9/5 s) at 150 degrees C in 100 ppm acetone concentration which is expected to be applied in the non-invasive detection of diabetes. Moreover, the mechanism of the enhanced gas sensing based on hollow coral-like SnO2-ZnO NFs is analyzed in depth from energy band of n-n metal oxide semiconductors composite structures.
引用
收藏
页码：15734 / 15743
页数：10
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