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Title
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Fabrication of an Electrochemical l-Cysteine Sensor Based on Graphene Nanosheets Decorated Manganese Oxide Nanocomposite Modified Glassy Carbon Electrode
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Type
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JournalPaper
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Keywords
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Electrochemical sensors, Manganese oxide nanoparticles, Graphene nanosheets, l-Cysteine
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Abstract
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The graphene nanosheets/manganese oxide nanoparticles modified glassy carbon electrode (GC/GNSs/MnOx) was simply prepared by casting a thin film of GNSs on the GC electrode surface, followed by performing electrodeposition of MnOx at applied constant potential. The GC/GNSs/MnOx modified electrode shows high catalytic activity toward oxidation of l-cysteine. Hydrodynamic amperometry determination of l-cysteine gave linear responses over a concentration range up to 120 mM with a detection limit of 75 nM and sensitivity of 27 nAmM_1. The GC/GNSs/ MnOx electrode appears to be a highly efficient platform for the development of sensitive, stable and reproducible l-cysteine electrochemical sensors.
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Researchers
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Abdollah Salimi (Third Researcher), Hazhir Taimorian (Second Researcher), mansori majd samira (First Researcher)
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