Citation: Hui Ping Bai, Xu Xiao Lu, Guang Ming Yang, Yun Hui Yang. Hydrogen peroxide biosensor based on electrodeposition of zinc oxide nanoflowers onto carbon nanotubes film electrode[J]. Chinese Chemical Letters, ;2008, 19(3): 314-318. doi: 10.1016/j.cclet.2007.12.030 shu

Hydrogen peroxide biosensor based on electrodeposition of zinc oxide nanoflowers onto carbon nanotubes film electrode

Department of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650092, China

Received Date: 3 September 2007

Fund Project: This work was supported by the Foundation of Science Commission of Yunnan Province (No. 2006B0028M), the Foundation for PhD in Yunnan Normal University.

A new amperometric biosensor for hydrogen peroxide was developed based on adsorption of horseradish peroxidase at the glassy carbon electrode modified with zinc oxide nanoflowers produced by electrodeposition onto multi-walled carbon nanotubes (MWNTs) film. The morphology of the MWNTs/nano-ZnO electrode has been investigated by scanning electron microscopy (SEM), and the electrochemical performance of the electrode has also been studied by amperometric method. The resulting electrode offered an excellent detection for hydrogen peroxide at -0.11 V with a linear response range of 9.9×10^-7 to 2.9×10^-3 mol/L with a correlation coefficient of 0.991, and response time < 5 s. The biosensor displays rapid response and expanded linear response range, and excellent stability.
- Multi-walled carbon nanotubes,
- Biosensor,
- Electrodeposition,
- Horseradish peroxidase,
- ZnO nanoflowers
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