Boosted sensitivity of graphene gas sensor via nanoporous thin film structures
文献类型:期刊论文
作者 | Wu, Jin1; Feng, Shuanglong3![]() ![]() |
刊名 | SENSORS AND ACTUATORS B-CHEMICAL
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出版日期 | 2018-02-01 |
卷号 | 255页码:1805-1813 |
关键词 | Nanoporous Graphene Thin Film Gas Sensor Co2 Nh3 Sensitivity Mpcvd |
ISSN号 | 0925-4005 |
DOI | 10.1016/j.snb.2017.08.202 |
英文摘要 | A facile, cost-effective and two-step strategy is developed to fabricate a nanoporous graphene (Gr) thin film for enhanced gas sensing at room temperature. Microwave plasma enhanced chemical vapor deposition (MPCVD) is first exploited to synthesize 3D Gr spherical structures, which are subsequently fragmented by ultrasonic treatment in liquid. Deposition of the fragmented 3D Gr structures on a substrate leads to the formation of a nanoporous Gr thin film, which is exploited as a conductance channel to detect CO2 and NH3 with impressive performance, including high sensitivity, linearity, low limit of detection (LOD) and reversibility. Compared with traditional gas sensors based on planar Gr sheets, this nanoporous Gr thin film displays remarkable 4.2 times higher response to CO2 and 10.4 times larger response to NH3, demonstrating the advantage of nanoporous Gr in improving the sensitivity. CO2 with a wide concentration range from 20 to 1000 ppm is detected with good linearity and repeatability. Furthermore, NH3 with the low concentration of 2 ppm is detected with a good response of 19.2%. Note that ultrafast and complete recovery is achieved at room temperature, bypassing the requirement of external stimulus to facilitate the recovery. In addition, long-term stability and immunity to high humidity are achieved. This work underscores the efficacy of a nanoporous Gr thin film structure in improving gas sensing performance of Gr materials. (C) 2017 Elsevier B.V. All rights reserved. |
资助项目 | Singapore National Research Foundation (NRF) through the Center for Environmental Sensing and Modeling (CENSAM) in Singapore-MIT Alliance for Research and Technology (SMART) ; National Natural Science Foundation of China[61605207] ; National Natural Science Foundation of China[61601434] |
WOS研究方向 | Chemistry ; Electrochemistry ; Instruments & Instrumentation |
语种 | 英语 |
WOS记录号 | WOS:000414319900077 |
出版者 | ELSEVIER SCIENCE SA |
源URL | [http://172.16.51.4:88/handle/2HOD01W0/79] ![]() |
专题 | 微纳制造与系统集成研究中心 |
作者单位 | 1.Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou 510275, Guangdong, Peoples R China 2.Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Micronano Mfg & Syst Integrat Ctr, Chongqing 400714, Peoples R China 4.Northwest Polytech Univ, Sch Mech Engn, Xian, Shaanxi, Peoples R China 5.Singapore MIT Alliance Res & Technol SMART Ctr, Ctr Environm Sensing & Modeling CENSAM, Singapore 117543, Singapore 6.MIT, Dept Architecture, 77 Massachusetts Ave, Cambridge, MA 02139 USA |
推荐引用方式 GB/T 7714 | Wu, Jin,Feng, Shuanglong,Li, Zhong,et al. Boosted sensitivity of graphene gas sensor via nanoporous thin film structures[J]. SENSORS AND ACTUATORS B-CHEMICAL,2018,255:1805-1813. |
APA | Wu, Jin.,Feng, Shuanglong.,Li, Zhong.,Tao, Kai.,Chu, Jin.,...&Norford, Leslie K..(2018).Boosted sensitivity of graphene gas sensor via nanoporous thin film structures.SENSORS AND ACTUATORS B-CHEMICAL,255,1805-1813. |
MLA | Wu, Jin,et al."Boosted sensitivity of graphene gas sensor via nanoporous thin film structures".SENSORS AND ACTUATORS B-CHEMICAL 255(2018):1805-1813. |
入库方式: OAI收割
来源:重庆绿色智能技术研究院
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