4.3 Article

Ni(OH)2/MoS x nanocomposite electrodeposited on a flexible CNT/PI membrane as an electrochemical glucose sensor: the synergistic effect of Ni(OH)2 and MoS x

Journal

JOURNAL OF SOLID STATE ELECTROCHEMISTRY
Volume 20, Issue 1, Pages 133-142

Publisher

SPRINGER
DOI: 10.1007/s10008-015-3002-9

Keywords

CNT/PI membrane; Ni(OH)(2) nanoparticles; Molybdenum sulfide; Nonenzymatic glucose sensor; Electrocatalytic oxidation

Funding

  1. National Natural Science Foundation of China [51372106]

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A nonenzymatic glucose sensor was constructed by electrodepositing molybdenum sulfide (MoS (x) )-nickel (II) hydroxide (Ni(OH)(2)) in sequence on a flexible carbon nanotube/polyimide (CNT/PI) composite membrane. The sensing material was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The electrocatalytic activity of the as-prepared nanomaterial toward glucose oxidation was investigated by cyclic voltammetry and amperometric measurement. The Ni(OH)(2)/MoS (x) /CNT/PI sensor demonstrated excellent properties including a wide linear range from 10 to 1600 mu M of glucose, rapid response (< 3 s), low detection limit of 5.4 mu M, good selectivity, good repeatability, and long-term stability (2 weeks). The superior performances were attributed to the pronounced synergistic effect between Ni(OH)(2) and MoS (x) . Furthermore, the excellent sensor was successfully applied to detect glucose in human blood serum samples by standard addition method with satisfactory recovery.

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