Abstract
Copper nanoparticles modified as-grown monolayer and bilayer graphene on copper substrates have been used for non-enzymatic electrochemical glucose sensing. The high quality, continuous, full coverage graphene on copper substrate act as a good electrochemical electrode which obviating the tedious transfer processes. The present sensor shows excellent performance for glucose detection including a wide linear range of 0.02–2.3 mM, a low detection limit (1.39 μM, S/N = 3), high sensitivity (379.31 μA mM−1 cm−2), fast response time (＜5 s), good selectivity to the general coexisted interferences, reliable stability, etc. We believe this kind of electrode has a great potential for practical glucose sensing applications and also promise for other biomolecules detection.
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