Abstract
The electrocatalytic reduction of hydrogen peroxide (H2O2) was investigated using an electrode that was obtained by electropolymerization of Prussian Blue (PB) on a carbon ionic liquid electrode (CILE). The electrochemical reduction of H2O2 in buffer of pH 7.4 was performed using cyclic voltammetry and the amperometric I–t curve technique. A PB-modified CILE was applied to detect H2O2 at −0.10 V (versus the Ag/AgCl electrode). The linear dynamic range is from 0.05 to 6.0 mM, the detection limit is 1.0 µM (S/N = 3). The electrode displays good stability, a response time of <5 s, and better electrocatalytic activity towards H2O2. The ease and low cost of fabrication along with its high sensitivity and renewable surface make the CILE widely applicable in electroanalytical sensing.
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Acknowledgments
The authors gratefully acknowledge the financial support from National Outstanding Youth Foundations of China, National Science Foundation of China (50725825) and Special Research Found for the Doctoral Program of Higher Education of China (20060532006).
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Li, Y., Liu, X., Zeng, X. et al. Nonenzymatic hydrogen peroxide sensor based on a Prussian Blue-modified carbon ionic liquid electrode. Microchim Acta 165, 393–398 (2009). https://doi.org/10.1007/s00604-009-0150-6
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DOI: https://doi.org/10.1007/s00604-009-0150-6