Abstract
A biohybrid hydrogel is fabricated by integrating horseradish peroxidase (HRP) with polyhydroxyl cellulose (PHC), which is prepared by mixing of poly(vinyl alcohol) and carboxymethyl hydroxyethyl cellulose. PHC provides a biocompatible microenvironment for HRP, and the UV-vis spectrum indicates that the confromation of HRP-loaded biohydrogel is well retained relative to free HRP. Based on the direct electrochemistry and electrocatalytic ability of HRP, a third-generation H2O2 biosensor is developed. Under the optimized conditions, the H2O2 biosensor shows a linear response over the range from 1.0 μM to 1.0 mM with a detection limit (S/N = 3) of 0.5 μM.
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Acknowledgement
This work supported by Shanghai Municipal Education Commission (No. 08ZZ25) and Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials (No. JSKC07037).
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Feng, L., Wang, L., Hu, Z. et al. Encapsulation of horseradish peroxidase into hydrogel, and its bioelectrochemistry. Microchim Acta 164, 49–54 (2009). https://doi.org/10.1007/s00604-008-0030-5
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DOI: https://doi.org/10.1007/s00604-008-0030-5