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Wenjing Yuan, Anran Liu, Liang Huang, Chun Li and Gaoquan Shi High-Performance NO2 Sensors Based on Chemically Modified Graphene Advanced Materials 25

Version of Record online: 9 NOV 2012 | DOI: 10.1002/adma.201203172

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Covalently grafting reduced graphene oxide (rGO) sheets with sulfophenyl or ethylenediamine groups can produce chemically modified graphene (CMG) for fabricating high-performance gas sensors. The NO2 sensors based on these CMGs exhibit sensitivities 4 to 16 times higher than that of a sensor based on rGO. They also show excellent selectivity and repeatability without the aid of UV-light or thermal treatment.

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