This paper describes the development and the results of a Quartz Crystal Microbalance (QCM) sensor for NO2 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 NO2 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 N2 at room temperature.

Preparation of Poly(3,4-ethylenedioxythiophene) Films on Piezoelectric Quartz Crystal and Their Gas Sensitivities / 73 I. Pasquini; M. L. Foresti; M. Innocenti ;A. Fort; M. Mugnaini; L. Pigani; V. Vignoli; S. Rocchi; F. Loglio. - In: ECS TRANSACTIONS. - ISSN 1938-5862. - ELETTRONICO. - 25 (33)(2010), pp. 0-0. [10.1149/1.3334799]

Preparation of Poly(3,4-ethylenedioxythiophene) Films on Piezoelectric Quartz Crystal and Their Gas Sensitivities

FORESTI, MARIA LUISA;INNOCENTI, MASSIMO;
2010

Abstract

This paper describes the development and the results of a Quartz Crystal Microbalance (QCM) sensor for NO2 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 NO2 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 N2 at room temperature.
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73 I. Pasquini; M. L. Foresti; M. Innocenti ;A. Fort; M. Mugnaini; L. Pigani; V. Vignoli; S. Rocchi; F. Loglio
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2158/393347
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