Surface engineering of NICKEL SELENIDE (cas 1314-05-2) nanosheets array on nickel foam: An integrated anode for glucose sensing

Add time:08/17/2019    Source:sciencedirect.com

NICKEL SELENIDE (cas 1314-05-2)s (Ni3Se2), which boast a narrow band gap and high conductivity, have gained widespread attention for their potential use in water electrolysis sytems and dye-sensitized solar cells. We report herein the in situ fabrication of nickel selenide nanosheet arrays on nickel (Ni) foam (Ni3Se2 NS/NF) and their use in an integrated, non-enzymatic glucose sensor. Ni3Se2 NS/NF anodes exhibited a high rate of electrocatalytic glucose oxidation, attaining a sensitivity of 5962 μA mM−1 cm−2, a linear range from 0.25 μM to 6.335 mM, a limit of detection (LOD) of 0.04 μM, and good selectivity. The excellent sensing properties of these anodes are attributed to their high catalytic activity and conductivity, afforded by synergistic interations between Ni3Se2 and Ni, and the large surface area and easy access to electrolytes provided by the open-shelled nanoarray configuration and 3D Ni foam skeleton.

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