Direct Ascorbic Acid detection with ferritin immobilized on single-walled carbon nanotubes

Authors

Chonlada Dechakiatkrai, University of WollongongFollow
Jun Chen, University of WollongongFollow
Carol M. Lynam, University of WollongongFollow
Kwang Min Shin, Hanyang University
Seon Jeong Kim, Hanyang University
Sukon Phanichphant, Chiang Mai University
Gordon G. Wallace, University of WollongongFollow

RIS ID

27043

Publication Details

Dechakiatkrai, C., Chen, J., Lynam, C. M., Shin, K., Kim, S., Phanichphant, S. & Wallace, G. G. (2008). Direct Ascorbic Acid detection with ferritin immobilized on single-walled carbon nanotubes. Electrochemical and Solid-State Letters, 11 (1), K4-K6.

Abstract

Ferritin protein was noncovalently immobilized onto single-walled carbon nanotubes (SWNTs). This SWNT/ferritin composite was characterized using cyclic voltammetry, UV-visible spectroscopy, Raman spectroscopy, and high-resolution transmission electron microscopy. The use of the SWNT/ferritin film as an amperometric biosensor was demonstrated by sensing ascorbic acid in phosphate-buffered saline solution with a sensitivity of 767 uAmg. It demonstrated that ferritin protein bound to SWNTs enhances the oxidation reaction of ascorbic acid over 11-fold.

Grant Number

ARC/FF0669110

Additional Grant Number

http://purl.org/au-research/grants/ARC/FF0669110