Fabrication of prussian blue/multi-walled carbon nanotubes modified electrode for electrochemical sensing of hydroxylamine |
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Authors: | Na Zhang Guangfeng Wang Aixia Gu Yuehua Feng Bin Fang |
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Affiliation: | 1. College of Chemistry and Materials Science, Anhui Key Laboratory of Chem-Biosensing, Anhui Normal University, Wuhu, 241000, People’s Republic of China
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Abstract: | We are presenting a sensor for hydroxylamine that is based on an glassy carbon electrode modified with nanoparticles of Prussian Blue and with multi-walled carbon nanotubes (MWCNTs). The sensing material was synthesized using a mixture of ferric chloride and potassium ferricyanide solution in the presence of MWCNTs under ambient conditions. Characterization was done by scanning electron microscopy, UV-vis spectroscopy, Fourier transform infrared absorption spectrum and cyclic voltammetry. The modified electrode showed two well-defined pairs of redox peaks and dramatic catalytic activity towards the electro-oxidation of hydroxylamine with a linear response ranging from 1.5 µM to 2.0 mM. In addition, tests show the sensor exhibited outstanding stability and reproducibility. |
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