Correlation between carbon oxygenated species of SWCNTs and the electrochemical oxidation reaction of NADH

• NADH oxidation reaction was highly sensitive to defects in the SWCNT structure.
• The peak current ratio of NADH at SWCNTs was evaluated.
• The peak intensity ratio of the G-band/D-band was obtained from the Raman spectra.
• The peak current ratio showed a good relationship to the Raman peak intensity ratio.

The correlation between carbon oxygenated species as a defect in single-walled carbon nanotubes (SWCNTs) and the oxidation reaction behavior of the reduced form of β-nicotinamide dinucleotide (NADH) was investigated. The two main oxidation peaks of NADH at the SWCNTs were due to adsorbed and diffused species, respectively. The peak current ratio showed a good relationship to the intensity ratio of the G-band/D-band obtained from the Raman spectra of the SWCNTs.

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