Repository of Research and Investigative Information

Repository of Research and Investigative Information

Baqiyatallah University of Medical Sciences

Application of carbon nanoonion-NiMoO4-MnWO4 nanocomposite for modification of glassy carbon electrode: Electrochemical determination of ascorbic acid

(2020) Application of carbon nanoonion-NiMoO4-MnWO4 nanocomposite for modification of glassy carbon electrode: Electrochemical determination of ascorbic acid. Microchemical Journal. p. 9. ISSN 0026-265X

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Abstract

In this paper, sonochemical synthesized nanocomposite was used in the construction of an electrochemical sensor. Decorated carbon nanoonions (CNOs) with nickel molybdate (NiMoO4) and manganese tungstate (MnWO4) nanocomposite were used to modify the glassy carbon electrode (GCE). The high conductivity and large surface area of the CNOs and the electrocatalytic effect of NiMoO4 and MnWO4 nanocomposite provide a synergistic effect on the electrooxidation processes. The modified GCE surface with a synthesized nanocomposite of CNO-NiMoO4-MnWO4 was used to determine ascorbic acid using differential pulse voltammetry (DPV) method. The developed ascorbic acid sensor displayed a wide dynamic calibration range (1-100 mu M) with trace level LOD (0.33 mu M) and appropriate sensitivity (0.1768 mu A mu M(-1)cm(-2)). The determination of ascorbic acid in the serum and urine as the real samples exhibited a reasonable relative recovery in the range of 100-104.

Item Type: Article
Keywords: Carbon nanoonion Nickel molybdate Manganese tungstate Ascorbic acid Voltammetric sensor uric-acid graphene oxide paste electrode dopamine performance sensor cathode dyes Chemistry
Page Range: p. 9
Journal or Publication Title: Microchemical Journal
Journal Index: ISI
Volume: 159
Identification Number: https://doi.org/10.1016/j.microc.2020.105470
ISSN: 0026-265X
Depositing User: مهندس مهدی شریفی
URI: http://eprints.bmsu.ac.ir/id/eprint/8472

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