Direct ascorbic acid detection with ferritin immobilized on single-walled carbon nanotubes
- Authors
- Dechakiatkrai, Chonlada; Chen, Jun; Lynam, Carol; Shin, Kwang-Min; Kim, Seon Jeong; Phanichphant, Sukon; Wallace, Gordon G.
- Issue Date
- Oct-2007
- Publisher
- ELECTROCHEMICAL SOC INC
- Citation
- ELECTROCHEMICAL AND SOLID STATE LETTERS, v.11, no.1, pp.K4 - K6
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTROCHEMICAL AND SOLID STATE LETTERS
- Volume
- 11
- Number
- 1
- Start Page
- K4
- End Page
- K6
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/172226
- DOI
- 10.1149/1.2795834
- ISSN
- 1099-0062
- 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 1.0 mM ascorbic acid in phosphate-buffered saline solution with a sensitivity of 767 mu A/mg. It demonstrated that ferritin protein bound to SWNTs enhances the oxidation reaction of ascorbic acid over 11-fold.
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