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Electrodeposition of palladium nanoparticles on porous graphitized carbon monolith modified carbon paste electrode for simultaneous enhanced determination of ascorbic acid and uric acid

Citation

Mukdasai, S and Crowley, U and Pravda, M and He, X and Nesterenko, EP and Nesterenko, PN and Paull, B and Srijaranai, S and Glennon, JD and Moore, E, Electrodeposition of palladium nanoparticles on porous graphitized carbon monolith modified carbon paste electrode for simultaneous enhanced determination of ascorbic acid and uric acid, Sensors and Actuators B: Chemical, 218 pp. 280-288. ISSN 0925-4005 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 Elsevier B.V.

DOI: doi:10.1016/j.snb.2015.04.071

Abstract

A novel, simple and highly sensitive electrochemical method is developed for the determination of ascorbic acid (AA) and uric acid (UA) based on a palladium nanoparticles deposited on porous graphitized carbon monolith modified carbon paste electrode (PdNPs/CM/CPE). The chemical modified electrode was characterized by scanning electron microscopy (SEM) and electrochemical impedance spectroscopy (EIS). The PdNPs/CM/CPE displayed excellent electrochemical catalytic activities towards AA and UA with bare CPE, PdNPs/CPE, CM/CPE and PdNPs/CM/CPE by cyclic voltammetry (CV). The oxidation potentials of AA and UA at the PdNPs/CM/CPE shifted negatively and the peak currents were much larger than other electrodes. The amperometric signal of PdNPs/CM/CPE showed a good linearity with correlation coefficient greater than 0.997. The low detection limits (S/N = 3) for AA and UA were 0.53 μmol L−1 and 0.66 μmol L−1, respectively. The proposed method showed easy fabrication, high sensitivity and stability, and good reproducibility. In addition, the modified electrode was applied to determine the AA and UA in human serum sample.

Item Details

Item Type:Refereed Article
Keywords:palladium nanoparticles, porous graphitized carbon monolith, ascorbic acid, uric acid, carbon paste electrode
Research Division:Chemical Sciences
Research Group:Macromolecular and Materials Chemistry
Research Field:Physical Chemistry of Materials
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Nesterenko, PN (Professor Pavel Nesterenko)
Author:Paull, B (Professor Brett Paull)
ID Code:100248
Year Published:2015
Web of Science® Times Cited:12
Deposited By:Chemistry
Deposited On:2015-05-07
Last Modified:2016-05-17
Downloads:0

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