Journal of Sensors and Sensor Systems
Journal of Sensors and Sensor Systems
JSSS
Articles | Volume 3, issue 2
Articles | Volume 3, issue 2
https://doi.org/10.5194/jsss-3-241-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/jsss-3-241-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 3, issue 2
Regular research article
 | 
09 Oct 2014
Regular research article |  | 09 Oct 2014

A simple method to recover the graphene-based chemi-resistor signal

F. Fedi, F. Ricciardella, M. L. Miglietta, T. Polichetti, E. Massera, and G. Di Francia

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Short summary
We present the development of a simple and fast method for restoring exhaust graphene-based chemi-resistors used for NO2 detection. Exposing the devices repeatedly to gases or to air for more than two days, an overall worsening of the sensing signal is observed. Starting from this hypothesis and from the observation that nitrogen dioxide is soluble in water, we performed a recovery method consisting in the dipping of exhaust devices into ultrapure water at 100°C for 60 sec.
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Advanced functional materials for environmental monitoring...