TY - JOUR
T1 - Exploiting sensor geometry for enhanced gas sensing properties of fluorinated carbon nanotubes under humid environment
AU - Struzzi, Claudia
AU - Scardamaglia, Mattia
AU - Casanova-Cháfer, Juan
AU - Calavia, R
AU - Colomer, Jean-François
AU - Kondyurin, A.
AU - Bilek, M
AU - Britun, M
AU - Snyders, Rony
AU - Llobet, Eduard
AU - Bittencourt, Carla
N1 - Funding Information:
CS is grateful to the “Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture” (F.R.I.A.) for financial support. CS also acknowledges the Stiftelsen för Strategisk Forskning (SSF) (Project no. RMA15-0024). MS is FRS-FNRS post-doctoral researcher, J-FC and CB are Researcher Associates at the FRS-FNRS. The authors thank the Australian synchrotron radiation lightsource for the funding (grant no. AS161/SXR/10421 ) and the staff of the Soft X-Ray beamline. This work is supported by the Belgian Fund for Scientific Research (FRS-FNRS) under the FRFC contract “CHEMOGRAPHENE” (convention no. 2.4577.11). This research is also supported by a Marie Curie International Research Staff Exchange Scheme Fellowship within the 7th European Community Framework Programme “NanoCF” (grant agreement number: PIRSES-GA-2013-612577 ). Funded in part by MINECO and FEDER via grant no. TEC2015-71663-R and by AGAUR under grant no. 2017SGR 418 . E.L. is supported by the Catalan institution for Research and Advanced Studies via the 2012 Edition of the ICREA Academia Award.
Publisher Copyright:
© 2018 Elsevier B.V.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/2/15
Y1 - 2019/2/15
N2 - Modification of the surface electronic properties of vertically aligned and randomly distributed carbon nanotubes and the hydrophobic character after exposure to Ar:F
2 and CF
4 plasma are exploited to optimize the sensing characteristics of these materials. The sensing properties of fluorinated carbon nanotubes are disclosed by probing their stability and responsiveness towards the detection of two selected pollutants such as nitrogen dioxide and ammonia (NO
2 and NH
3). The effects of both humidity level and geometry of the sensing layer are assessed. It is demonstrated that fluorination, by increasing the surface hydrophobicity, results in increased response reproducibility and enhanced sensor response towards NH
3 when using vertically aligned carbon nanotubes.
AB - Modification of the surface electronic properties of vertically aligned and randomly distributed carbon nanotubes and the hydrophobic character after exposure to Ar:F
2 and CF
4 plasma are exploited to optimize the sensing characteristics of these materials. The sensing properties of fluorinated carbon nanotubes are disclosed by probing their stability and responsiveness towards the detection of two selected pollutants such as nitrogen dioxide and ammonia (NO
2 and NH
3). The effects of both humidity level and geometry of the sensing layer are assessed. It is demonstrated that fluorination, by increasing the surface hydrophobicity, results in increased response reproducibility and enhanced sensor response towards NH
3 when using vertically aligned carbon nanotubes.
KW - Fluorinated carbon nanotubes
KW - Increased response reproducibility under humid conditions
KW - Room temperature gas sensors
KW - Sensing response to NO and NH
UR - http://www.scopus.com/inward/record.url?scp=85056645314&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2018.10.159
DO - 10.1016/j.snb.2018.10.159
M3 - Article
SN - 0925-4005
VL - 281
SP - 945
EP - 952
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
ER -