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Issue 13, 2014
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Free-standing electrochemical electrode based on Ni(OH)2/3D graphene foam for nonenzymatic glucose detection

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Abstract

Three-dimensional graphene foam (3DGF) is a superior sensing material because of its high conductivity, large specific surface area and wide electrochemical potential windows. In this work, hexagonal Ni(OH)2 nanosheets are deposited on the surface of chemical vapor deposition-grown 3DGF through a facial hydrothermal process without any auxiliary reagents. The morphology and structure of the composite are characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), Raman spectroscopy, and X-ray diffraction (XRD). Based on the Ni(OH)2/3DGF composite, a free-standing electrochemical electrode is fabricated. Being employed as a nonenzymatic glucose detection electrochemical electrode, it exhibits a high sensitivity (∼2.65 mA mM−1 cm−2), low detection limit (0.34 μM) and excellent selectivity with a linear response from 1 μM to 1.17 mM. The excellent sensing properties of the Ni(OH)2/3DGF electrode may be attributed to the synergistic effect of the high electrocatalytic activity of Ni(OH)2 nanosheets and the high conductivity and large surface area of 3DGF.

Graphical abstract: Free-standing electrochemical electrode based on Ni(OH)2/3D graphene foam for nonenzymatic glucose detection

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Article information


Submitted
25 Mar 2014
Accepted
30 Apr 2014
First published
06 May 2014

Nanoscale, 2014,6, 7424-7429
Article type
Paper
Author version available

Free-standing electrochemical electrode based on Ni(OH)2/3D graphene foam for nonenzymatic glucose detection

B. Zhan, C. Liu, H. Chen, H. Shi, L. Wang, P. Chen, W. Huang and X. Dong, Nanoscale, 2014, 6, 7424
DOI: 10.1039/C4NR01611D

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