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A Non‐Enzymatic Glucose Sensor Based on Ni/MnO 2 Nanocomposite Modified Glassy Carbon Electrode
Author(s) -
Wang Yan,
Bai Wushuang,
Nie Fei,
Zheng Jianbin
Publication year - 2015
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201500049
Subject(s) - nanocomposite , x ray photoelectron spectroscopy , materials science , nanomaterials , scanning electron microscope , electrochemistry , transmission electron microscopy , electrochemical gas sensor , chemical engineering , electrode , detection limit , nickel , nanotechnology , chemistry , composite material , chromatography , metallurgy , engineering
A novel flower like 3D nickel/manganese dioxide (Ni/MnO 2 ) nanocomposite was synthesized by a kind of simple electrochemical method and the formation mechanism of flower like structure was also researched. In addition, morphology and composition of the nanocomposite were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM), and X‐ray photoelectron spectroscopy (XPS). Then the Ni/MnO 2 nanocomposites were applied to fabricate electrochemical non‐enzymatic glucose sensor. The electrochemical investigation for the sensor indicated that it possessed an excellent electrocatalytic property for glucose, and could applied to the quantification of glucose with a linear range from 2.5×10 −7 to 3.5×10 −3 M, a sensitivity of 1.04 mA mM −1 cm −2 , and a detection limit of 1×10 −7 M ( S/N =3). The proposed sensor also presented attractive features such as interference‐free, and long‐term stability. The present study provided a general platform for the one‐step synthesis of nanomaterials with novel structure and can be extended to other optical, electronic and magnetic nanocompounds.