ZnO enhanced NiO-based gas sensors towards ethanol

被引：125

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

页码：170 / 174

页数：5

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