Superior gas detection by nanoporous graphene structures

Jin Wu, Kai Tao, Jianmin Miao, Leslie K. Norford

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

A new method of combining microwave plasma enhanced chemical vapor deposition (MPCVD) with ultrasonic fragmentation is exploited to prepare nanoporous graphene (Gr) thin film for detection of hazardous gases with high performance, including high sensitivity, linearity, low limit of detection (LOD) and reversibility. Compared with gas sensors based on traditional planar Gr sheets, this nanoporous Gr thin film displays 3.6 times higher response to 1 ppm NO2, 10.4 times larger response to NH3 and 4.2 times higher response to CO2, demonstrating the improved sensitivity of nanoporous Gr thin film. The boosted sensitivity is attributed to nanoporous Gr structures, large amounts of defects and oxygenated functional groups. Note that ultrafast signal recovery is achieved at room temperature, bypassing the requirement of external stimulus to facilitate the recovery. Furthermore, the response is linear with gas concentration.

源语言英语
主期刊名TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems
出版商Institute of Electrical and Electronics Engineers Inc.
242-245
页数4
ISBN(电子版)9781538627310
DOI
出版状态已出版 - 26 7月 2017
活动19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017 - Kaohsiung, 中国台湾
期限: 18 6月 201722 6月 2017

出版系列

姓名TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems

会议

会议19th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2017
国家/地区中国台湾
Kaohsiung
时期18/06/1722/06/17

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