Nonenzymatic glucose sensor based on disposable pencil graphite electrode modified by copper nanoparticles

Authors

S. Pourbeyram
K. Mehdizadeh

Abstract

A nonenzymatic glucose sensor based on a disposable pencil graphite electrode (PGE) modified by copper nanoparticles [Cu(NP)] was prepared for the first time. The prepared Cu(NP) exhibited an absorption peak centered at ∼562 nm using UV-visible spectrophotometry and an almost homogenous spherical shape by scanning electron microscopy. Cyclic voltammetry of Cu(NP)-PGE showed an adsorption controlled charge transfer process up to 90.0 mVs−1The sensor was applied for the determination of glucose using an amperometry technique with a detection limit of [0.44 (±0.01) μM] and concentration sensitivity of [1467.5 (±1.3) μA/mMcm−2]. The preparation of the Cu(NP)-PGE sensor was reproducible (relative standard deviation = 2.10%, n = 10), very simple, fast, and inexpensive, and the Cu(NP)-PGE is suitable to be used as a disposable glucose sensor. © 2016

ScienceDirect Link

10.1016/j.jfda.2016.02.010

Recommended Citation

Pourbeyram, S. and Mehdizadeh, K. (2016) "Nonenzymatic glucose sensor based on disposable pencil graphite electrode modified by copper nanoparticles," Journal of Food and Drug Analysis: Vol. 24 : Iss. 4 , Article 26.
Available at: https://doi.org/10.1016/j.jfda.2016.02.010

Creative Commons License

This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Fulltext URL

https://www.sciencedirect.com/science/article/pii/S102194981630031X/pdfft?md5=eaef643f7d24cc12dbfd8d9885caae27&pid=1-s2.0-S102194981630031X-main.pdf