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ZHOU YUANYUAN1,* , LI SONG2
A multiwall carbon nanotube/Nafion composite modified glassy carbon electrode (MWNT/Nafion/GCE) was prepared and characterized by Atomic Force Microscopy (AFM) and Transmission Electron Microscope(TEM). This voltammetric sensor exhibited strong catalytic effect toward the oxidation of 8- hydroxyquinoline(8-HQ) in HAc-NaAc buffer solution (0.2M, pH 3.6). A new analytical method for determining 8-HQ was established. Under the optimized condition, the anodic peak current was linear with the concentration of 8-HQ in the range of 2×10-8~1.0×10-5M with a detection limit of 9×10-9 M. The practical application of MWNT/Nafion/GCE was carried out for determining 8-HQ in cosmetic sample with satisfactory results. The number of electron and proton taking part in the reaction was calculated, and then the electrode reaction mechanism was confirmed by UV-vis spectra..
Multi-wall carbon nanotubes, Nafion, Coliforms, Amperometric detection.
ZHOU YUANYUAN, LI SONG, The voltammetric sensor for sensitive determination of 8-hydroxyquinoline based on MWNTs/Nafion/GCE, Optoelectronics and Advanced Materials - Rapid Communications, 5, 9, September 2011, pp.924-927 (2011).
Submitted at: Sept. 9, 2011
Accepted at: Sept. 15, 2011
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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