Citation: Zhang Xiao, Xu Yaohua, Liu Hao, Zhao Wenrui, Ming Anjie, Wei Feng. Preparation of homogeneous porous Zn-CoO_x and its response to alcohols under relative low operating temperature[J]. Chinese Chemical Letters, ;2020, 31(8): 2059-2062. doi: 10.1016/j.cclet.2020.01.012 shu

Preparation of homogeneous porous Zn-CoO_x and its response to alcohols under relative low operating temperature

Zhang Xiao ^a,b,*, ,
Xu Yaohua ^a,b ,
Liu Hao ^a,b ,
Zhao Wenrui ^a,b ,
Ming Anjie ^a,b,*, ,
Wei Feng ^a,b,*,

a.
State Key Laboratory of Advanced Materials for Smart Sensing, General Research Institute for Nonferrous Metals, Beijing 100088, China
b.
GRIMAT Engineering Institute Co., Ltd., Beijing 101407, China

zhangxiao@grinm.com

mingaj@grinm.com

weifeng@grinm.com

Received Date: 11 October 2019
Revised Date: 25 December 2019
Accepted Date: 6 January 2020
Available Online: 20 January 2020

Figures(4)

A homogeneous porous Co₃O₄-ZnO nanomaterial (Zn-CoO_x) was successfully fabricated by precipitationannealing route. The as-prepared Zn-CoO_x exhibited good response, reliable reversibility and good selectivity towards alcohols, which attributed to the porous structure and p-n heterojunction formed between Co₃O₄ and ZnO. In particular, the different Fermi levels of Co₃O₄ and ZnO leaded to a further increase the depth of the space charge layer, which improved the gas sensitivity of the material from 10% to 480%. Besides, the continuous Co₃O₄ leaded to a relatively lower operating temperature and resistance. This material preparation method and bimetallic oxides could be widely used in the research and development of metal oxide gas sensitive materials and sensors.
- Co₃O₄,
- ZnO,
- P-N heterojunction,
- Alcohol,
- Gas detection
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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation of homogeneous porous Zn-CoOx and its response to alcohols under relative low operating temperature

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通讯作者: 陈斌, bchen63@163.com

Preparation of homogeneous porous Zn-CoO_x and its response to alcohols under relative low operating temperature