Journal
JOURNAL OF EXPERIMENTAL NANOSCIENCE
Volume 4, Issue 4, Pages 313-322Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17458080903115379
Keywords
gas sensor; NO2 sensor; humidity sensor; graphene
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Sensing characteristics of few-layer graphenes for NO2 and humidity have been investigated with graphene samples prepared by the thermal exfoliation of graphitic oxide, conversion of nanodiamond (DG) and arc-discharge of graphite in hydrogen (HG). The sensitivity for NO2 is found to be highest with DG. Nitrogen-doped HG (n-type) shows increased sensitivity for NO2 compared with pure HG. The highest sensitivity for humidity is observed with HG. Sensing characteristics of graphene have been examined for different aliphatic alcohols and the sensitivity is found to vary with the chain length and branching.
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