Paper-based Volatile Organic Compound Sensor using MultiWalled Carbon Nanotubes on a Polytetrafluoroethylene Membrane

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Published: Dec 30, 2018
Keywords:
Carbon nanotube Volatile organic compound Paper Sensor

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Worawut Muangrat
Institute of Carbon Science and Technology, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
Patchara Artsamai
College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, 1 Chalongkrung Rd., Ladkrabang, Bangkok 10520, Thailand
Mayuree Phonyiem
College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, 1 Chalongkrung Rd., Ladkrabang, Bangkok 10520, Thailand
Satoshi Ichikawa
Institute for NanoScience Design, Osaka University, 1-3 Machikaneyamacho, Toyonaka, Osaka 560-8531, Japan
Winadda Wongwiriyapan
College of Nanotechnology, King Mongkut’s Institute of Technology Ladkrabang, 1 Chalongkrung Rd., Ladkrabang, Bangkok 10520, Thailand

Abstract

In this research, a paper-based volatile organic compound (VOC) sensor using multiwalled carbon nanotubes (CNTs) on a polytetrafluoroethylene (PTFE) membrane was successfully fabricated. The optimum of CNT amount and the responses to VOC vapors were investigated. Firstly, CNTs were functionalized with oxygen-containing function groups by oxygen plasma for 30 min, followed by dispersing the functionalized CNTs in ethanol with a concentration of 0.01 mg/mL. Finally, the paper-based sensor was fabricated by vacuum filtration of CNT suspension. The amounts of CNTs on a membrane were controlled by the volume of the CNT suspension in the range of 20 – 40 mL. The film resistance decreased with a volume of CNT suspension. The CNT sensor formed from 30 mL of CNT suspension exhibited the optimum amount of CNT for VOC sensing. Moreover, the paper-based sensor shows the highest response to methanol and the lowest response to benzene. Such a different sensitivity is essentially due to the different polarities of VOC molecules. These results imply a potential use of CNT on a paper as a low-cost, flexible, portable and disposable VOC sensor.

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How to Cite
1.
Muangrat W, Artsamai P, Phonyiem M, Ichikawa S, Wongwiriyapan W. Paper-based Volatile Organic Compound Sensor using MultiWalled Carbon Nanotubes on a Polytetrafluoroethylene Membrane. Thai J. Nanosci. Nanotechnol. [Internet]. 2018 Dec. 30 [cited 2024 Dec. 27];3(2):35-41. Available from: https://ph05.tci-thaijo.org/index.php/TJNN/article/view/58
Issue
Vol. 3 No. 2 (2018): TJNN
Section
Research Articles
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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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