Reduced graphene oxide (rGO) encapsulated Co3O4 composite nanofibers for highly selective ammonia sensors
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Feng, Qiuxia
- 通讯作者：
- Li, XG (reprint author), Dalian Univ Technol, Inst Sensing Technol, Sch Elect Sci & Technol, Key Lab Liaoning Integrated Circuits Technol, Dalian 116024, Peoples R China.
- 合写作者：
- Li, Xiaogan,Wang, Jing,Gaskov, Alexander M.
- 发表时间：
- 2016-01-01
- 发表刊物：
- SENSORS AND ACTUATORS B-CHEMICAL
- 收录刊物：
- SCIE、EI、ESI高被引论文
- 文献类型：
- J
- 卷号：
- 222
- 页面范围：
- 864-870
- ISSN号：
- 0925-4005
- 关键字：
- Reduced graphene oxide (rGO); rGO encapsulated Co3O4 composite nanofibers; Electrospinning; Room-temperature gas sensors; Ammonia
- 摘要：
- 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.
- 是否译文：
- 否
