Abstract
In this paper, graphene foam and ZnO nanorods were prepared by chemical vapor deposition (CVD) and hydrothermal processes, respectively. The hybrids of graphene nanoslices and ZnO nanorods were then fabricated by ultrasonic process. The as-prepared hybrids were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy. The hybrids possess a slice-like structure with a smooth surface and rod structure, and the lengths of graphene nanoslices are about 3–4 µm. XRD results demonstrated the products are pure without impurities. Raman spectra showed that graphene has a few layers and defect free. The electrical performances of hybrids/ITO electrodes were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The sensitivities of the electrode for LD detection are 0.19 and 0.20 µA µM−1 under the interruption of with UA and without UA. The results show that the electrode has good selectivity, reproducibility and stability which would be potential for use in future clinical research.
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