3D Copper Foam-Supported CuCo(2)O(4) Nanosheet Arrays as Electrode for Enhanced Non-Enzymatic Glucose Sensing

CuCo(2)O(4) anchored on Cu foam (CuCo(2)O(4)/CF) with polycrystalline features was fabricated by a mild process based on solvothermal reaction and subsequent calcination in this work. The structure and morphology of the obtained materials were thoroughly characterized by X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, and transmission electron microscopy. According to the above analysis, the morphology of the CuCo(2)O(4) was nanosheet arrays. Meanwhile, the CuCo(2)O(4) was grown on Cu foam successfully. The CuCo(2)O(4)/CF displayed good electrochemical properties for glucose detection at a linear range from 0 mM to 1.0 mM. Meanwhile, the detection limit was as low as 1 μM (S/N = 3), and the sensitivity was 20,981 μA·mM(−1)·cm(−2). Moreover, the selectivity and the stability were tested with excellent results. This nanomaterial could show great potential application in electrochemical sensors.