Citation: Mei Xiu Kan, Xue Ji Wang, Hui Min Zhang. Detection of H₂O₂ at a composite film modified electrode with highly dispersed Ag nanoparticles in Nafion[J]. Chinese Chemical Letters, ;2011, 22(4): 458-460. doi: 10.1016/j.cclet.2010.12.009 shu

Detection of H₂O₂ at a composite film modified electrode with highly dispersed Ag nanoparticles in Nafion

School of Science, Beijing Institute of Technology, Beijing 100081, China

Received Date: 21 October 2010

Fund Project: Financial support from the National Natural Science Foundation of China (No. 20875008) is gratefully acknowledged.

Ag nanoparticles were prepared by using the ion-exchange of Nafion combined with electrochemical reduction on the electrode. Ag nanoparticles are highly dispersed in Nafion film with an average size of 4.0±0.2 nm. The amount of Ag nanoparticles can be readily controlled by the amount of Nafion coated on the electrode. Thus obtained Ag nanoparticles exhibit good catalytic activity for the reduction of H₂O₂ with a linear response to H₂O₂ in the concentration range of 0.04-8.0 mmol/L with a sensitivity of 0.34 μA/mmol/L and a detection limit of 1.0×10^-8 mol/L.
- Ag nanoparticles,
- Nafion,
- Electrodeposition,
- Electrocatalytic activity,
- Hydrogen peroxide
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