Journal
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 15, Issue 4, Pages 821-827Publisher
SPRINGER
DOI: 10.1007/s10008-010-1161-2
Keywords
Amperometric sensor; Nano-copper oxide; Hydrazine; Electrodeposition
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Funding
- National Natural Science Foundation of China [20775002]
- Anhui Normal University
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A sensitive hydrazine sensor has been fabricated using copper oxide nanoparticles modified glassy carbon electrode (GCE) to form nano-copper oxide/GCE. The nano-copper oxide was electrodeposited on the surface of GCE in CuCl2 solution at -0.4 V and was characterized by Scanning electron microscopy and X-ray diffraction. The prepared modified electrode showed a good electrocatalytic activity toward oxidation of hydrazine. The electrochemical behavior of hydrazine on nano-copper oxide/GCE was explored. The oxidative current increased linearly with improving concentration of hydrazine on nano-copper oxide/GCE from 0.1 to 600 mu M and detection limit for hydrazine was evaluated to be 0.03 mu M at a signal-to-noise ratio of 3. The oxidation mechanism of hydrazine on the nano-copper oxide/GCE was also discussed. The fabricated sensor could be used to determine hydrazine in real water.
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