Ionic liquid–graphene composite for ultratrace explosive trinitrotoluene detection

02 engineering and technology 0210 nano-technology 01 natural sciences 0104 chemical sciences
DOI: 10.1016/j.elecom.2010.06.028 Publication Date: 2010-07-02T04:38:26Z
ABSTRACT
Abstract A new ionic liquid (IL)–graphene composite prepared by combining IL and a three-dimensional graphene material with large specific surface area and pronounced mesoporosity was used for ultratrace trinitrotoluene detection, showing low background current, high sensitivity of 1.65 μA cm − 2 per ppb, low detection limit of 0.5 ppb and good reproducibility, which is much superior to that demonstrated by the IL–CNT and IL–graphite composites. The preparation of IL–graphene composite expands the scope of IL-based electrochemical devices.
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