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Ionic liquid–graphene composite for ultratrace explosive trinitrotoluene detection

2010; Elsevier BV; Volume: 12; Issue: 9 Linguagem: Inglês

10.1016/j.elecom.2010.06.028

1873-1902

Chunxian Guo, Zhi Song Lu, Yu Lei, Chang Ming Li,

Analytical Chemistry and Sensors

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.