Interconnected graphene/polymer micro-tube piping composites for liquid sensing

Detection and analysis of volatile organic compounds （VOCs） as pollutants in the atmosphere and liquids are of great significance because of the detrimental effects of VOCs. A polymer-coated graphene micro-tube piping （GMP） structure with a cross-linked and interconnected channel network was synthes...

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Bibliographic Details
Published in:Nano research 2014-06, Vol.7 (6), p.869-876
Main Authors: Yang, Tingting, Zhang, Hongze, Wang, Yan, Li, Xiao, Wang, Kunlin, Wei, Jinquan, Wu, Dehai, Li, Zhihong, Zhu, Hongwei
Format: Article
Language:English
Subjects:
Acetone
Air pollution
Atomic/Molecular Structure and Spectra
Biomedicine
Biotechnology
Carbon
Channels
Chemical vapor deposition
Chemistry and Materials Science
Condensed Matter Physics
Copper
Crosslinking
Detection
Fabrication
Graphene
Laboratories
Liquids
Materials Science
Nanotechnology
Networks
Organic compounds
Pollutants
Pollution detection
Polymers
Research Article
Sensors
Solvents
Three dimensional
VOCs
Volatile organic compounds
复合管
微管
挥发性有机化合物
检测
液体传感器
石墨
聚合物复合材料
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Summary:Detection and analysis of volatile organic compounds （VOCs） as pollutants in the atmosphere and liquids are of great significance because of the detrimental effects of VOCs. A polymer-coated graphene micro-tube piping （GMP） structure with a cross-linked and interconnected channel network was synthesized for liquid sensing. By virtue of their unique cross-linked and interconnected channel network configuration, polycrystalline conformation, and the support of a polymer layer, the resistivity of the 3D hollow micro-tubing GMPs was sensitive to strain, ensuring high sensitivity of the liquid sensor （R/Ro of -4 × 10^3% for pure acetone and R/Ro of -105% for 0.01 wt.% acetone solution）. Due to the capillary force, the interfaces of the 3D structures can speed up the penetration of solvents into the polymer, thus promote distinct selectivity within seconds and significantly decrease the response time. Owing to their good selectivity, high sensitivity, rapid response and flexibility, and the ease of use of the sensors and the simplicity of the fabrication processes, the GMP/polymer composites should be a good candidate for liquid sensing.
ISSN:1998-0124
1998-0000
DOI:10.1007/s12274-014-0448-5