Issue 8, 2016

NiCo alloy nanoparticles anchored on polypyrrole/reduced graphene oxide nanocomposites for nonenzymatic glucose sensing

Abstract

NiCo alloy nanoparticles anchored on polypyrrole/reduced graphene oxide nanocomposites (NiCo/PPy/RGO) were successfully constructed through in situ chemical polymerization and a coreduction process for glucose sensing. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) were employed to characterize the morphology and composition of NiCo/PPy/RGO. The electrochemical properties of the sensor were investigated by cyclic voltammetry and amperometry. The results indicated that the supporting substrate of PPy/RGO nanocomposites can provide a larger surface area for the dispersion of NiCo nanoparticles. Meanwhile, this nonenzymatic glucose sensor displayed an excellent electrocatalytic activity to glucose oxidation, with a low detection limit of 0.17 μM (S/N = 3), a linear range of 0.5 μM–4.1 mM, and a sensitivity of 153.5 μA mM−1 cm−2. The present study demonstrates that the NiCo/PPy/RGO composites are promising electroactive materials for developing non-enzymatic glucose sensors.

Graphical abstract: NiCo alloy nanoparticles anchored on polypyrrole/reduced graphene oxide nanocomposites for nonenzymatic glucose sensing

Article information

Article type
Paper
Submitted
22 Apr 2016
Accepted
18 May 2016
First published
20 May 2016

New J. Chem., 2016,40, 6658-6665

NiCo alloy nanoparticles anchored on polypyrrole/reduced graphene oxide nanocomposites for nonenzymatic glucose sensing

Q. Sheng, D. Liu and J. Zheng, New J. Chem., 2016, 40, 6658 DOI: 10.1039/C6NJ01264G

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