期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 222, 期 -, 页码 864-870出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2015.09.021
关键词
Reduced graphene oxide (rGO); rGO encapsulated Co3O4 composite nanofibers; Electrospinning; Room-temperature gas sensors; Ammonia
资金
- National Natural Science Foundation of China [61474012, 61176068, 61131004]
- Hainan Key Projects in Science and Technology [ZDXM2014097]
- Fundamental Research Funds for the Central Universities
The reduced graphene oxide (rGO) encapsulated Co3O4 nanocrystals were fabricated by using the electrospinning technology. The sample shows nanofiber morphology and the Co3O4 nanocrystals were wrapped by rGO thin layers. The as-electrospun rGO-Co3O4 nanofibers based chemoresistive sensor exhibited a p-type semiconductor behavior in ambient conditions and showed an excellent sensitivity with a fast response and recovery to different concentrations of ammonia from 5 to 100 ppm at room temperature. The sensor displays selectivity to several potential interferrents such as methanol, ethanol, formaldehyde, acetone, benzene, and methylbenzene. It may be attributed to the unique hierarchical wrapping microstructure and the selective NH3 adsorption at both the wrapping layer of rGO and the polarized C-Co3+ covalent centers within the nanofibers. (C) 2015 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据