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A novel L-Lactate sensor based on enzyme electrode modified with ZnO nanoparticles and multiwall carbon nanotubes

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8 Author(s)
Y. T. Wang ; Institues for Advanced Interdisciplinary Research, East China Normal University, Shanghai, China ; Y. J. Bao ; L. Lou ; J. J. Li
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A highly sensitive and stable L-Lactate sensor based on the synergic action of multi-wall carbon nanotube (MWCNTs) and ZnO nanoparticles has been developed. The unique sandwich-like layer structure (PDDA/LOD/ZnO/MWCNTs) provides a favorable microenvironment to keep the bioactivity of LOD and prevent enzyme molecule leakage. Therefore, the proposed L-Lactate biosensor exhibited good analytical performances including high sensitivity and selectivity with satisfactory stability to amperometric determination of L-Lactate. The results indicated that the proposed PDDA/LOD/ZnO/MWCNTs film was an attractive matrix for the immobilization of LOD enzymes to fabricate biosensors.

Published in:

Sensors, 2010 IEEE

Date of Conference:

1-4 Nov. 2010