Journal
RSC ADVANCES
Volume 2, Issue 21, Pages 8157-8163Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra21041j
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Funding
- National Natural Science Foundation of China [21031001, 20876067]
- Fundamental Research Funds for the Central Universities [21609203]
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Nitrogen-doped carbon nanorods (N-CNRs) are prepared by a direct carbonization method using polyaniline nanorods as the carbon precursor. The electrochemical behavior of the N-CNRs-Nafion modified electrode is evaluated in connection with dopamine and ascorbic acid by cyclic voltammetry and differential pulse voltammetry. Experimental results indicate that the N-CNRs modified electrode has improved current response and fast electron transfer kinetics. The linear response for the selective determination of dopamine in the presence of ascorbic acid is obtained in the range of 0.008 mu M to 15.0 mu M with a detection limit of 8.9 x 10(-9) M (S/N = 3) by differential pulse voltammetry under optimum conditions. The N-CNRs-Nafion modified electrode exhibits a wide linear range, very low detection limit and anti-interference ability. Meanwhile, a kinetic reaction process and a reaction mechanism for the N-CNRs are also proposed.
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