We describe a simple method for preparing Au‐TiO2/graphene (GR) nanocomposite by deposition of Au nanoparticles (NPs) on TiO2/GR substrates. The as‐prepared Au‐TiO2/GR was characterized by X‐ray diffraction (XRD) and transmission electron microscopy (TEM). The presence of Au NPs on TiO2/GR surface remarkably improves the electrocatalytic activity towards the oxidation of hydrogen peroxide (H2O2) and β‐nicotinamide adenine dinucleotide (NADH). The Au‐TiO2/GR modified glassy carbon (GC) electrode exhibits good amperometric response to H2O2 and NADH, with linear range from 10 to 200 µM and 10 to 240 µM, and detection limit of 0.7 and 0.2 µM, respectively.
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Yang et al. (2012) studied this question.
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