Development of Organic Gas Sensor Using Quartz Crystal Microbalance Coated with Plasma-polymerized Films

In this study, we developed a gas detection membrane that can selectively sense volatile organic compounds used in the industry and research. 4-(Chloromethyl) styrene (CMS) and 4-vinylbenzoic acid (VBA) films were coated on a quartz crystal microbalance (QCM) using plasma polymerization. The respons...

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Bibliographic Details
Published in:Sensors and materials 2020-01, Vol.32 (3), p.1123
Main Authors: Aizawa, Hidenobu, Kusakari, Shin-ichi, Yamada, Kazunori, Noda, Kazutoshi, Habe, Hiroshi
Format: Article
Language:English
Subjects:
Dichloromethane
Frequency shift
Functional groups
Gas sensors
Microbalances
Polymerization
Quartz
Quartz crystals
Selectivity
VOCs
Volatile organic compounds
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Summary:In this study, we developed a gas detection membrane that can selectively sense volatile organic compounds used in the industry and research. 4-(Chloromethyl) styrene (CMS) and 4-vinylbenzoic acid (VBA) films were coated on a quartz crystal microbalance (QCM) using plasma polymerization. The response sensitivity (RS) to each organic gas in the plasma-polymerized (pp) film was calculated and evaluated from the amount of frequency shift in the organic gas adsorption/desorption of the QCM. In pp-CMS coated on the QCM, dichloromethane was adsorbed more than in other pp-films, possibly because pp-CMS had a higher affinity with chloro groups of dichloromethane. By contrast, pp-VBA had a high RS to alcohol-based solvents containing hydroxy groups, especially methanol. From the results, the gas selectivity of the pp films was suggested to depend on their functional groups.
ISSN:0914-4935
DOI:10.18494/SAM.2020.2637