Journal article

Electrochemistry of polystyrene intercalated vertically aligned single- and double-walled carbon nanotubes on gold electrodes

Katherine E Moore, Benjamin S Flavel, Cameron J Shearer, Amanda V Ellis, Joseph G Shapter

ELECTROCHEMISTRY COMMUNICATIONS | ELSEVIER SCIENCE INC | Published : 2011

Abstract

Electrochemical electrodes incorporating double- and single-walled carbon nanotubes (CNTs) were fabricated on cysteamine modified flat gold substrates. Through covalent coupling of the amine end groups with carboxyl functionalized CNTs, a dense forest of vertically aligned CNTs was produced. To these a 30 nm thick insulating polystyrene layer was spin coated, resulting in exposure of the uppermost carbon nanotube ends. The electrochemical performance of each electrode was then determined using the redox probe ruthenium hexaamine. Once surrounded by polymer, the double-walled CNTs (DWCNTs) showed an improved electron transfer rate, compared to the single-walled electrode. This improvement was..

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University of Melbourne Researchers

Grants

Funding Acknowledgements

KM wishes to thank the Australian Government for an APA scholarship as well as the Playford Memorial Trust for a top up scholarship. This work is supported by the Australian Microscopy and Microanalysis Research Facility (AMMRF).