A simple method to recover the graphene-based chemi-resistor signal
We present the development of a simple and fast method for restoring exhaust graphene-based chemi-resistors used for NO<sub>2</sub> detection. Repeatedly exposing the devices to gases or to air for more than 2 days, an overall worsening of the sensing signal is observed; we hypothesized...
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2014-10-01
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doaj-2650b9fcdfa6405bbe8f17d16a49538a2020-11-24T23:19:49ZengCopernicus PublicationsJournal of Sensors and Sensor Systems2194-87712194-878X2014-10-013224124410.5194/jsss-3-241-2014A simple method to recover the graphene-based chemi-resistor signalF. Fedi0F. Ricciardella1M. L. Miglietta2T. Polichetti3E. Massera4G. Di Francia5CNR-Institute for Composite and Biomedical Materials, Portici (Naples), ItalyENEA UTTP-MDB Laboratory, R. C. Portici (Naples), ItalyENEA UTTP-MDB Laboratory, R. C. Portici (Naples), ItalyENEA UTTP-MDB Laboratory, R. C. Portici (Naples), ItalyENEA UTTP-MDB Laboratory, R. C. Portici (Naples), ItalyENEA UTTP-MDB Laboratory, R. C. Portici (Naples), ItalyWe present the development of a simple and fast method for restoring exhaust graphene-based chemi-resistors used for NO<sub>2</sub> detection. Repeatedly exposing the devices to gases or to air for more than 2 days, an overall worsening of the sensing signal is observed; we hypothesized that the poisoning effect in both cases is caused by the exposure to NO<sub>2</sub>. Starting from this hypothesis and from the observation that NO<sub>2</sub> is soluble in water, we performed a recovery method consisting in the dipping of exhaust devices into ultrapure water at 100 °C for 60 s. The device performances are compared with those obtained after the restoration is achieved using the typical annealing under vacuum method.http://www.j-sens-sens-syst.net/3/241/2014/jsss-3-241-2014.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
F. Fedi F. Ricciardella M. L. Miglietta T. Polichetti E. Massera G. Di Francia |
spellingShingle |
F. Fedi F. Ricciardella M. L. Miglietta T. Polichetti E. Massera G. Di Francia A simple method to recover the graphene-based chemi-resistor signal Journal of Sensors and Sensor Systems |
author_facet |
F. Fedi F. Ricciardella M. L. Miglietta T. Polichetti E. Massera G. Di Francia |
author_sort |
F. Fedi |
title |
A simple method to recover the graphene-based chemi-resistor signal |
title_short |
A simple method to recover the graphene-based chemi-resistor signal |
title_full |
A simple method to recover the graphene-based chemi-resistor signal |
title_fullStr |
A simple method to recover the graphene-based chemi-resistor signal |
title_full_unstemmed |
A simple method to recover the graphene-based chemi-resistor signal |
title_sort |
simple method to recover the graphene-based chemi-resistor signal |
publisher |
Copernicus Publications |
series |
Journal of Sensors and Sensor Systems |
issn |
2194-8771 2194-878X |
publishDate |
2014-10-01 |
description |
We present the development of a simple and fast method for restoring exhaust
graphene-based chemi-resistors used for NO<sub>2</sub> detection. Repeatedly
exposing the devices to gases or to air for more than 2 days, an overall
worsening of the sensing signal is observed; we hypothesized that the
poisoning effect in both cases is caused by the exposure to NO<sub>2</sub>.
Starting from this hypothesis and from the observation that NO<sub>2</sub> is
soluble in water, we performed a recovery method consisting in the dipping of
exhaust devices into ultrapure water at 100 °C for 60 s. The device
performances are compared with those obtained after the restoration is
achieved using the typical annealing under vacuum method. |
url |
http://www.j-sens-sens-syst.net/3/241/2014/jsss-3-241-2014.pdf |
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