A Hydrogen Peroxide Sensor Prepared by Electropolymerization of Pyrrole Based on Screen-Printed Carbon Paste Electrodes

doi:10.3390/s7030239

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Sensors 2007, 7(3), 239-250; doi:10.3390/s7030239

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A Hydrogen Peroxide Sensor Prepared by Electropolymerization of Pyrrole Based on Screen-Printed Carbon Paste Electrodes

Guang Li ¹^,* , You Wang ² and Hui Xu ¹

¹ National Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, P.R. China ² Department of Biomedical Engineering, Zhejiang University, Hangzhou 310027, P.R. China

* Author to whom correspondence should be addressed.

Received: 5 January 2007 / Accepted: 28 February 2007 / Published: 5 March 2007

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Abstract: A disposable amperometric biosensor for commercial use to detect hydrogenperoxide has been developed. The sensor is based on screen-printed carbon paste electrodesmodified by electropolymerization of pyrrole with horseradish peroxidase (HRP) entrapped.The facture techniques of fabricating the enzyme electrodes are suitable for mass productionand quality control. The biosensor shows a linear amperometric response to H₂O₂ from 0.1to 2.0 mM, with a sensitivity of 33.24 μA mM^-1 cm^-2. Different operational parameters ofelectropolymerization are evaluated and optimized.

Keywords: Electropolymerization; Biosensor; Polypyrrole; Horseradish Peroxidase; Screen- Printed Electrodes

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Cite This Article

MDPI and ACS Style

Li, G.; Wang, Y.; Xu, H. A Hydrogen Peroxide Sensor Prepared by Electropolymerization of Pyrrole Based on Screen-Printed Carbon Paste Electrodes. Sensors 2007, 7, 239-250.

AMA Style

Li G., Wang Y., Xu H. A Hydrogen Peroxide Sensor Prepared by Electropolymerization of Pyrrole Based on Screen-Printed Carbon Paste Electrodes. Sensors. 2007; 7(3):239-250.

Chicago/Turabian Style

Li, Guang; Wang, You; Xu, Hui. 2007. "A Hydrogen Peroxide Sensor Prepared by Electropolymerization of Pyrrole Based on Screen-Printed Carbon Paste Electrodes." Sensors 7, no. 3: 239-250.

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