Practical chemical sensors from chemically derived graphene

Jesse D. Fowler; Matthew J. Allen; Vincent C. Tung; Yang Yang; Richard B. Kaner; Bruce H. Weiller

doi:10.1021/nn800593m

Practical chemical sensors from chemically derived graphene

Jesse D. Fowler, Matthew J. Allen, Vincent C. Tung, Yang Yang, Richard B. Kaner, Bruce H. Weiller

Research output: Contribution to journal › Article › peer-review

1347 Scopus citations

Abstract

We report the development of useful chemical sensors from chemically converted graphene dispersions using spin coating to create single-layer films on interdigitated electrode arrays. Dispersions of graphene in anhydrous hydrazine are formed from graphite oxide. Preliminary results are presented on the detection of NO ₂, NH ₃, and 2,4-dinitrotoluene using this simple and scalable fabrication method for practical devices. Current versus voltage curves are linear and ohmic in all cases, studied independent of metal electrode or presence of analytes. The sensor response is consistent with a charge transfer mechanism between the analyte and graphene with a limited role of the electrical contacts. A micro hot plate sensor substrate is also used to monitor the temperature dependence of the response to nitrogen dioxide. The results are discussed in light of recent literature on carbon nanotube and graphene sensors.

Original language	English (US)
Pages (from-to)	301-306
Number of pages	6
Journal	ACS Nano
Volume	3
Issue number	2
DOIs	https://doi.org/10.1021/nn800593m
State	Published - Feb 24 2009
Externally published	Yes

Keywords

2,4-dinitrotoluene
Ammonia
Hydrazine
Micro hot plate
Nitrogen dioxide

ASJC Scopus subject areas

General Materials Science
General Engineering
General Physics and Astronomy

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10.1021/nn800593m

Cite this

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title = "Practical chemical sensors from chemically derived graphene",

abstract = "We report the development of useful chemical sensors from chemically converted graphene dispersions using spin coating to create single-layer films on interdigitated electrode arrays. Dispersions of graphene in anhydrous hydrazine are formed from graphite oxide. Preliminary results are presented on the detection of NO 2, NH 3, and 2,4-dinitrotoluene using this simple and scalable fabrication method for practical devices. Current versus voltage curves are linear and ohmic in all cases, studied independent of metal electrode or presence of analytes. The sensor response is consistent with a charge transfer mechanism between the analyte and graphene with a limited role of the electrical contacts. A micro hot plate sensor substrate is also used to monitor the temperature dependence of the response to nitrogen dioxide. The results are discussed in light of recent literature on carbon nanotube and graphene sensors.",

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AU - Fowler, Jesse D.

AU - Allen, Matthew J.

AU - Tung, Vincent C.

AU - Yang, Yang

AU - Kaner, Richard B.

AU - Weiller, Bruce H.

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AB - We report the development of useful chemical sensors from chemically converted graphene dispersions using spin coating to create single-layer films on interdigitated electrode arrays. Dispersions of graphene in anhydrous hydrazine are formed from graphite oxide. Preliminary results are presented on the detection of NO 2, NH 3, and 2,4-dinitrotoluene using this simple and scalable fabrication method for practical devices. Current versus voltage curves are linear and ohmic in all cases, studied independent of metal electrode or presence of analytes. The sensor response is consistent with a charge transfer mechanism between the analyte and graphene with a limited role of the electrical contacts. A micro hot plate sensor substrate is also used to monitor the temperature dependence of the response to nitrogen dioxide. The results are discussed in light of recent literature on carbon nanotube and graphene sensors.

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Practical chemical sensors from chemically derived graphene

Abstract

Keywords

ASJC Scopus subject areas

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