Poly(N-isopropylacrylamide)(PNIPAAm) having a lower critical solution temperature of 32 oC was used as a matrix to prepare temperature responsive carbon nanotubes (CNT) and functionalized CNT (fCNT) composites to modify glassy carbon electrode (GCE) to investigate their electrocatalytic activity. The GCE modification temperature at 25 and 37 oC (25f and 37f), working temperature at 25 and 37 oC (25aq and 37aq), and the type of CNT (CNT and fCNT) were found to significantly affect the elctrocatalytic activity of the composites toward redox reactions of Fe(CN)63-/4- as a probe. The fCNT/PNIPAAm composite with the 25f-37aq temperature combination exhibited strong electrocatalytic activity whereas the same composite with the other three temperature combinations and the CNT/PNIPAAm composite with all four temperature combinations exhibited insignificant electrocatalytic activity.

Temperature effects on the electrocatalytic activity of carbon nanotubes/poly(N-isopropylacrylamide) composites

243rd National Meeting (2012)

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