Journal
MICROCHIMICA ACTA
Volume 183, Issue 7, Pages 2139-2145Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-016-1843-2
Keywords
Nanocomposite; Hybridmaterial; Porphyrinoid; Multi-walled carbon nanotubes; FTIR
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Funding
- National Natural Science Foundation of China [21471052, 21375036, 21371054]
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The authors report on the synthesis of a hybrid material consisting of the porphyrinoid metal complex nickel(II) norcorrole that was noncovalently bound to carbon nanotubes (CNT-NiNC). The hybrid was characterized by UV-vis, FTIR spectroscopy, and thermogravimetric analysis. The CNTNiNC hybrid possesses high catalytic activity and selectivity toward the oxidation of ascorbic acid, dopamine, and uric acid. It was used to modify a glassy carbon electrode which then is shown to enable simultaneous or individual determination of ascorbic acid (AA), dopamine (DA), and uric acid (UA) at pH 6.5 and typical working potentials of -70, 200 and 380 mV (vs. SCE). The detection limits (at an SNR of 3) are 2.0 mu M for AA, 0.1 mu M for DA, and 0.4 mu M for UA.
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