Skip to main content

Research Repository

Advanced Search

Zinc oxide nanoparticles modified-carbon paste electrode used for the electrochemical determination of Gallic acid.

Chikere, C.; Faisal, N.H.; Lin, P.K.T.; Fernandez, C.

Authors

C. Chikere



Abstract

Zinc oxide nanoparticles (nano-ZnO) was used to modify carbon paste electrode (CPE) for a fast and sensitive electrochemical determination of gallic acid (GA). The study was carried out using cyclic voltammetry (CV) and differential voltammetry (DPV) techniques, where the nano-ZnO-modified electrode exhibited an efficient and sensitive oxidation of GA. The cyclic voltammetric result showed a significant enhancement of the peak current from 250μA to about 410μA. The electrochemical behaviour of GA on the nano-ZnO modified carbon paste electrode was studied using DPV, showing a sensitivity of the electrode in a concentration range of 1 x 10−6 to 5.0 x 10−5 mol L−1, with a correlation coefficient R2 of 0.9968 and a limit of detection of 1.86 x 10−7 mol L−1 (S/N =3). The proposed electrode was used successfully for the determination of GA in red wine with recoveries of 103%.

Citation

CHIKERE, C., FAISAL, N.H., LIN, P.K.T. and FERNANDEZ, C. 2019. Zinc oxide nanoparticles modified-carbon paste electrode used for the electrochemical determination of Gallic acid. Journal of physics: conference series [online], 1310: proceedings of 2018 Applied nanotechnology and nanoscience international conference (ANNIC 2018), 22-24 October 2018, Berlin, Germany, article ID 012008. Available from: https://doi.org/10.1088/1742-6596/1310/1/012008

Journal Article Type Conference Paper
Conference Name 2018 Applied nanotechnology and nanoscience international conference (ANNIC 2018)
Conference Location Berlin, Germany
Acceptance Date Aug 6, 2019
Online Publication Date Oct 8, 2019
Publication Date Oct 8, 2019
Deposit Date Oct 11, 2019
Publicly Available Date Oct 11, 2019
Journal Journal of Physics: Conference Series
Print ISSN 1742-6588
Electronic ISSN 1742-6596
Publisher IOP Publishing
Peer Reviewed Peer Reviewed
Volume 1310
Article Number 012008
DOI https://doi.org/10.1088/1742-6596/1310/1/012008
Keywords Zinc oxide nanoparticles; Gallic acid; Cyclic voltammetry; Differential pulse voltammetry; Electrochemistry
Public URL https://rgu-repository.worktribe.com/output/641735

Files





You might also like



Downloadable Citations