Polyaniline@CuNi nanocomposite: A highly selective, stable and efficient electrode material for binder free non-enzymatic glucose sensor

被引:80
作者
Bilal, Salma [1 ]
Ullah, Wahid [1 ]
Shah, Anwar-ul-Haq Ali [2 ]
机构
[1] Univ Peshawar, Natl Ctr Excellence Phys Chem, Peshawar 25120, Pakistan
[2] Univ Peshawar, Inst Chem Sci, Peshawar 25120, Pakistan
关键词
PANI@CuNi nanocomposite; Electrochemical activity; Non-enzymatic glucose sensor; NICKEL NANOPARTICLES; NANOWIRE ARRAYS; NI ALLOYS; NANOTUBES; COMPOSITE; SHEETS;
D O I
10.1016/j.electacta.2018.07.165
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
We present an efficient, highly selective and binder free non-enzymatic glucose sensor based on polyaniline@copper-nickel (PANI@CuNi) nanocomposite. PANI@CuNi nanocomposites with different loading ratio of nanoparticles (1: 025, 1: 0.33, 1: 05 and 1: 1) were prepared by mixing solution of PANI, synthesized through inverse emulsion polymerization method, and CuNi nanoparticles, synthesized through polyol process. The as prepared PANI@CuNi nanocomposites were coated on glassy carbon substrate without binder for non-enzymatic glucose sensing. A considerable increase in the active surface area of the electrode occurred after coating of this material. Electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and chronoamperometry demonstrated that PANI@CuNi nanocomposite with 1: 0.5 ratio could be a good choice to be used as electrode material for nonenzymatic glucose sensing. The PANI@CuNi modified electrode exhibited high sensitivity (1030 mu A mM(-1) cm(-2)), good lower detection limit (0.2 mu M) and a linear range of 5.6mM (R-2 = 0.992) with additional advantage of excellent selectivity, high stability and effective detection in real blood samples. (c) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码:382 / 391
页数:10
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