Issue 3, 2013

One-pot ultrasonic-electrodeposition of copper–graphene nanoflowers in Ethaline for glucose sensing

Abstract

Copper–graphene nanocomposite (Cu–GE) was one-pot prepared on a glassy carbon electrode (GCE) as a basal electrode by ultrasonic wave assisted electrodeposition with the choline chloride-based ionic liquid Ethaline as the supporting electrolyte. The proposed modified electrode was evaluated for the highly sensitive determination of glucose (Glc). Scanning electron microscopic measurement showed that the synthesized Cu–GE exhibit a flower-like shape. Energy dispersive X-ray spectroscopy confirmed that the petals were composed of C and Cu. Electrochemical methods were adopted to characterize the sensing properties of CuNPs–GE towards the electrocatalytic oxidation of Glc under alkaline conditions at 0.3 V in 0.1 mol L−1 potassium hydroxide. The sensor displayed a broad linearity of 5 to 900 μmol L−1 and 900 μmol L−1 to 11 mmol L−1 with a relatively low detection limit of 1 μmol L−1 (S/N = 3). The response time of the CuNPs–GE modified GCE was <3 s. It was tested for the determination of Glc levels in blood serum.

Graphical abstract: One-pot ultrasonic-electrodeposition of copper–graphene nanoflowers in Ethaline for glucose sensing

Article information

Article type
Paper
Submitted
05 Sep 2012
Accepted
21 Nov 2012
First published
23 Nov 2012

Anal. Methods, 2013,5, 767-772

One-pot ultrasonic-electrodeposition of copper–graphene nanoflowers in Ethaline for glucose sensing

Y. He and J. Zheng, Anal. Methods, 2013, 5, 767 DOI: 10.1039/C2AY26213D

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