Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6601965 | Electrochimica Acta | 2018 | 30 Pages |
Abstract
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 non-enzymatic glucose sensing. The PANI@CuNi modified electrode exhibited high sensitivity (1030â¯Î¼Aâ¯mMâ1 cmâ2), good lower detection limit (0.2â¯Î¼M) and a linear range of 5.6â¯mMâ¯(R2â¯=â¯0.992) with additional advantage of excellent selectivity, high stability and effective detection in real blood samples.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Salma Bilal, Wahid Ullah, Anwar-ul-Haq Ali Shah,