Carbon Nanotubes and Graphene - Research and Applications

A heated composite electrode consisted of multi-wall carbon nanotube (MWNT) and ionic liquids (ILs) was designed and fabricated. The non-conductive binders were replaced by a conductive IL, n-octylpyridinum hexafluorophosphate (OPFP). This heated OPFP/MWNT composite electrode was applied for electrochemiluminescent (ECL) sensor, and the performance of ECL sensor was evaluated by ascorbic acid (AA)/lucigenin ECL system. The new heated electrode combines the advantages of ILs/CNT and heated electrode, showing high thermal stability and conductivity, simple heating setups, improved reproducibility, renewable surface, simplicity of fabrication and enhanced sensitivity with detection limit (S/N = 3) of 0.01 μmol/L for AA.

(Yiting Chen, Xiaoping Chen, Zhenyu Lin, Hong Dai, Bin Qiu, Jianjun Sun, Lan Zhang and Guonan Chen, Electrochemistry Communications, Article in Press, doi:10.1016/j.elecom.2009.03.033 )