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Iron oxide nanoparticle decorated graphene for ultra-sensitive detection of volatile organic compounds
Linköping University, Department of Physics, Chemistry and Biology, Sensor and Actuator Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Sensor and Actuator Systems. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Plasma and Coating Physics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-1744-7322
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-1000-0437
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2018 (English)In: Proceedings, ISSN 2504-3900, Vol. 2, no 13, article id 985Article in journal (Refereed) Published
Abstract [en]

It has been found that two-dimensional materials, such as graphene, can be used as remarkable gas detection platforms as even minimal chemical interactions can lead to distinct changes in electrical conductivity. In this work, epitaxially grown graphene was decorated with iron oxide nanoparticles for sensor performance tuning. This hybrid surface was used as a sensing layer to detect formaldehyde and benzene at concentrations of relevance in air quality monitoring (low parts per billion). Moreover, the time constants could be drastically reduced using a derivative sensor signal readout, allowing detection at the sampling rates desired for air quality monitoring applications.

Place, publisher, year, edition, pages
MDPI, 2018. Vol. 2, no 13, article id 985
Keywords [en]
epitaxial graphene; metal oxide nanoparticle; gas sensor; volatile organic compounds; benzene; formaldehyde; derivative sensor signal
National Category
Physical Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-162242DOI: 10.3390/proceedings2130985OAI: oai:DiVA.org:liu-162242DiVA, id: diva2:1372910
Conference
EUROSENSORS 2018
Available from: 2019-11-25 Created: 2019-11-25 Last updated: 2020-01-14Bibliographically approved

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