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A uric acid sensor based on electrodeposition of nickel hexacyanoferrate nanoparticles on an electrode modified with multi-walled carbon nanotubes |
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| Authors: | Bin Fang Yuehua Feng Guangfeng Wang Cuihong Zhang Aixia Gu Min Liu |
| Institution: | 1. Anhui Key Laboratory of Chemo-Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241000, People??s Republic of China |
| Abstract: | An electrode sensitive to uric acid was prepared by electrodeposition of nickel(II) hexacyanoferrate(III) on the surface of a glassy carbon electrode modified with multi-walled carbon nanotubes. The morphology of the material was characterized by scanning electron microscopy and Fourier transform infrared spectrometry. The modified electrode were characterized via cyclic voltammetry and amperometry (i - t). It exhibited efficient electron transfer ability and a strong and fast (< 3?s) response towards uric acid which is linear in the range from 0.1???M to 18???M, with a lower detection limit of 50 nM (at an S/N ratio of 3). In addition, the electrode exhibited good reproducibility and long-term stability. A fast and sensitive uric acid electrochemical sensor has been fabricated by electrodepositing nickel hexacyanoferrate nanoparticles onto multi-walled carbon nanotubes/glassy carbon electrode. The sensor had excellent stability, rapid response, ease of construction and utilization for uric acid determination |
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