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. Author manuscript; available in PMC: 2014 Jul 15.
Published in final edited form as: Phys Chem Chem Phys. 2013 Aug 21;15(31):12785–12799. doi: 10.1039/c3cp51901e

Fig. 6.

Fig. 6

Magnetic loading of graphene–nickel nanoparticle hybrid for carbohydrate sensing. (A) Photograph of a magnetic electrode: (a) magnet; (b) glass tube; (c) copper wire; (d) graphite–epoxy composite. (B) TEM image of graphene–NiNP hybrid. (C) Cyclic voltammograms of the magnetic electrode before (a), and after being modified by graphene (b), NiNPs (c), graphene–NiNP hybrid (d and e) in 0.1 M NaOH solution containing 0 (d), and 5 mM (a–c and e) glucose at a scan rate of 50 mV s−1. Reproduced from ref. 92 with permission from Elsevier.