Issue 34, 2017, Issue in Progress

Cu@Ni core–shell nanoparticles/reduced graphene oxide nanocomposites for nonenzymatic glucose sensor

Abstract

In this work, the Cux@Ni100−x core–shell nanoparticles (CSNPs) are deposited on reduced graphene oxide (rGO) sheets, and this nanocomposites (in a Nafion matrix) are shown to be a viable materials for nonenzymatic sensing of glucose. A novel nonenzymatic glucose sensor based on a glass carbon electrode modified with Cu53@Ni47 CSNPs/rGO (referred to as Cu53@Ni47 CSNPs/rGO/GCE) displays an enhanced electrocatalytic activity to glucose oxidation in 0.1 M NaOH solution than that of Cu/GCE, Ni/GCE, Cu/rGO/GCE, Ni/rGO/GCE, and Cu52@Ni48 CSNPs/GCE, respectively. This is attributed to the three-in-one synergetic effects from their bimetallic compositions, specific core–shell structures, and interactions from the bimetallic CSNPs and support materials of rGO sheets. At an applied potential of +0.575 V (vs. SCE), the electrode has a low detection limit (0.5 μM; S/N = 3), a very wide linear range (0.001 mM to 4.1 mM), high sensitivity (780 μA mM−1 cm−2), and a fast response time (3 s). Thus, it has great potential for the development of nonenzymatic glucose sensors.

Graphical abstract: Cu@Ni core–shell nanoparticles/reduced graphene oxide nanocomposites for nonenzymatic glucose sensor

Supplementary files

Article information

Article type
Paper
Submitted
21 Jan 2017
Accepted
06 Mar 2017
First published
12 Apr 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 21128-21135

Cu@Ni core–shell nanoparticles/reduced graphene oxide nanocomposites for nonenzymatic glucose sensor

K. Wu, Y. Cai, B. Jiang, W. Cheong, X. Wei, W. Wang and N. Yu, RSC Adv., 2017, 7, 21128 DOI: 10.1039/C7RA00910K

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