This paper describes the development and the results of a Quartz Crystal Microbalance (QCM) sensor for NO 2 detection with the sensitive layer made of a thin film of poly (3,4-ethylenedioxythiophene) PEDOT. The PEDOT was obtained by electropolymerization on one of the gold electrodes of a 10 MHz AT-cut commercial quartz crystal. The sensor performance in terms of sensitivity and selectivity were assessed exploiting an ad hoc chemical sampling unit, and a low noise conditioning and processing electronic system. The preliminary obtained results show a NO 2 resolution and sensitivity of the order of 1 ppm, and 2.6 Hz/ppm, respectively, at 35°C constant room temperature and 0% relative humidity, and show that a satisfactory repeatability can be achieved with recovery cycles in N 2 at room temperature. ©The Electrochemical Society.
Pasquini, I., Foresti, M.L., Innocenti, M., Fort, A., Mugnaini, M., Pigani, L., et al. (2010). Preparation of poly(3,4-ethylenedioxythiophene) films on piezoelectric quartz crystal and their gas sensitivities. In Proceedings of 216th ECS Meeting (pp.125-131). PENNINGTON, USA : ELECTROCHEMICAL SOC INC, [10.1149/1.3334799].
Preparation of poly(3,4-ethylenedioxythiophene) films on piezoelectric quartz crystal and their gas sensitivities
FORT, ADA;MUGNAINI, MARCO;VIGNOLI, VALERIO;ROCCHI, SANTINA;
2010-01-01
Abstract
This paper describes the development and the results of a Quartz Crystal Microbalance (QCM) sensor for NO 2 detection with the sensitive layer made of a thin film of poly (3,4-ethylenedioxythiophene) PEDOT. The PEDOT was obtained by electropolymerization on one of the gold electrodes of a 10 MHz AT-cut commercial quartz crystal. The sensor performance in terms of sensitivity and selectivity were assessed exploiting an ad hoc chemical sampling unit, and a low noise conditioning and processing electronic system. The preliminary obtained results show a NO 2 resolution and sensitivity of the order of 1 ppm, and 2.6 Hz/ppm, respectively, at 35°C constant room temperature and 0% relative humidity, and show that a satisfactory repeatability can be achieved with recovery cycles in N 2 at room temperature. ©The Electrochemical Society.File | Dimensione | Formato | |
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https://hdl.handle.net/11365/386857
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