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Sprayed Carbon Nanotube Thin Films as Hydrogen Sensors

Published online by Cambridge University Press:  01 February 2011

Isabel Sayago ,
Eva Terrado ,
Manuel Aleixandre ,
Maria del Carmen Horrillo ,
Jesus Lozano ,
Maria Jesus Fernandez ,
Esperanza Lafuente ,
Wolfgang K Maser ,
Javier Gutierrez  and
Maria Teresa Martinez
...Show all authors
Eva Terrado
Affiliation:
eterrado@carbon.icb.csic.es, Instituto de Carboquimica - CSIC, Spain
Manuel Aleixandre
Affiliation:
manuel@ifa.cetef.csic.es, Laboratorio de Sensores IFA-CSIC, Spain
Maria del Carmen Horrillo
Affiliation:
carmenhorrillo@ifa.cetef.csic.es, Laboratorio de Sensores IFA-CSIC, Spain
Jesus Lozano
Affiliation:
sayago@ifa.cetef.csic.es, Laboratorio de Sensores IFA-CSIC, Spain
Maria Jesus Fernandez
Affiliation:
mjfernandez@ifa.cetef.csic.es, Laboratorio de Sensores IFA-CSIC, Spain
Esperanza Lafuente
Affiliation:
esperanza@carbon.icb.csic.es, Instituto de Carboquimica - CSIC, Spain
Wolfgang K Maser
Affiliation:
wmaser@carbon.icb.csic.es, Instituto de Carboquimica - CSIC, Spain
Javier Gutierrez
Affiliation:
javiergutierrez@ifa.cetef.csic.es, Laboratorio de Sensores IFA-CSIC, Spain
Maria Teresa Martinez
Affiliation:
mtmartinez@carbon.icb.csic.es, Instituto de Carboquimica - CSIC, Spain
Ana M Benito
Affiliation:
abenito@carbon.icb.csic.es, Instituto de Carboquimica - CSIC, Spain
Edgar Munoz
Affiliation:
edgar@carbon.icb.csic.es, Instituto de Carboquimica - CSIC, Spain
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Abstract

We report a novel, simple, and inexpensive method for preparing efficient carbon nanotube-based hydrogen sensors. Sensor devices were fabricated by simply spraying single-walled carbon nanotube (SWNT) dispersions on alumina substrates. Pd-functionalization of the employed SWNTs enabled increasing the device sensitivity to hydrogen. The effect of aging, thermal processing, and the employed carrier gases on the sensor performance is here described. The fabricated thin film sensors exhibited good sensitivity to hydrogen at room temperature in reversible and reproducible detection processes.

Keywords

sensornanostructurenanoscale
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 900: Symposium O – Nanoparticles and Nanostructures in Sensors and Catalysis , 2005 , 0900-O06-15
Copyright
Copyright © Materials Research Society 2006

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References

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