Enzymatic electrochemical biosensor based on multiwall carbon nanotubes and cerium dioxide nanoparticles for rutin detection
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2018
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In this study, a simple and sensitive enzymatic electrochemical biosensor was developed to detect rutin
by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and square wave voltammetry
(SWV) using a carbon paste electrode modified with a multiwall carbon nanotube (MWCNT), cerium
oxide nanoparticle (CeO2), and crude extract source of peroxidase enzyme (POx) composite. The
electrochemical parameters and experimental conditions were optimized and evaluated. The enzymatic
electrochemical biosensor (CeO2/POx/MWCNTs/CPE) showed excellent electrocatalytic activity
towards the detection of rutin. The surface physical characteristics of the modified electrode were
studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). This
biosensor demonstrated selectivity, stability, and reproducibility, which was further applied to detect
rutin in medicine tablets and capsules with recoveries in the range of 97-102%.
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Multiwall carbon nanotubes, Cerium dioxide nanoparticles, Crude extract, Rutin, POx
Citação
BENJAMIN, Stephen Rathinaraj et al. Enzymatic electrochemical biosensor based on multiwall carbon nanotubes and cerium dioxide nanoparticles for rutin detection. International Journal of Electrochemical Science, Amsterdam, v. 13, n. 1, p. 563-586, 2018. DOI: 10.20964/2018.01.51. Disponível em: https://www.sciencedirect.com/science/article/pii/S1452398123127416?via%3Dihub. Acesso em: 12 dez. 2023.