ZnO enhanced NiO-based gas sensors towards ethanol

被引：122
|
作者：
Deng, Xiaolan [1 ]
Zhang, Lilan [1 ]
Guo, Jing [1 ]
Chen, Qinjun [1 ]
Ma, Jianmin [1 ]
机构：
[1] Hunan Univ, Schcool Phys & Elect, Changsha 410082, Hunan, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2017年 / 90卷
基金：
中国国家自然科学基金;
关键词：
Heterostructure; Gas sensor; NiO; ZnO; Nanostructures; ROOM-TEMPERATURE; SENSING PROPERTIES; THIN-FILM; H2S; PERFORMANCE; SELECTIVITY; FABRICATION; NANOSHEETS; MECHANISM; FIBERS;
D O I：
10.1016/j.materresbull.2017.02.040
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
NiO/ZnO nanoplates were fabricated for gas sensors. Gas sensing characteristics toward ethanol, CO, H-2. H2S, acetone, and 1, 2-propanediol were measured, respectively. Our results show that the sensing performance is significantly improved in the NiO/ZnO nanoplate gas sensor as compared with the NiO gas sensor, which was ascribed to the decoration effect of ZnO nanoparticles on the surface. We also found that the NiO/ZnO nanoplate gas sensor exhibited higher sensitivity to ethanol gas than other gases (CO, H-2, H2S, acetone, and 1, 2-propanediol) at 400 degrees C, indicating good selectivity of ethanol sensing. Moreover, the NiO/ZnO nanoplate gas sensor presents fast response time of 2.1 s and fast recovery time of 4.1 s. These results suggest that NiO/ZnO nanoplates are promising for gas sensor. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：170 / 174
页数：5
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