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Volume 12
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10.3390/catal12090994
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Article

Electrocatalytic Investigation by Improving the Charge Kinetics between Carbon Electrodes and Dopamine Using Bio-Synthesized CuO Nanoparticles

by
Shashanka Rajendrachari
1,*,
Gururaj Kudur Jayaprakash
2,3,
Anup Pandith
4,*,
Abdullah Cahit Karaoglanli
1,5 and
Orhan Uzun
6,7
1
Department of Metallurgical and Materials Engineering, Bartin University, Bartin 74100, Turkey
2
Laboratory of Quantum Electrochemistry, School of Advanced Chemical Sciences, Shoolini University, Solan 173229, Himachal Pradesh, India
3
Department of Chemistry, Nitte Meenakshi Institute of Technology, Bangalore 560064, Karnataka, India
4
Department of International Ph.D. Program in Biomedical Engineering (IPBME), College of Biomedical Engineering, Taipei Medical University, Taipei City 11031, Taiwan
5
Turkish Airlines Inc., Istanbul 34149, Turkey
6
Bartin University, Bartin 74100, Turkey
7
Department of Physics, Ankara University, Ankara 06100, Turkey
*
Authors to whom correspondence should be addressed.
Catalysts 2022, 12(9), 994; https://doi.org/10.3390/catal12090994
Submission received: 17 June 2022 / Revised: 27 August 2022 / Accepted: 29 August 2022 / Published: 2 September 2022
(This article belongs to the Section Electrocatalysis)
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Abstract

We have successfully studied the charge transfer kinetics between carbon paste electrodes and dopamine using green synthesized rectangular monoclinic CuO nanoparticles (NPs) prepared by Alchemilla vulgaris leaves with the one-pot green synthesis method. The scanning electron microscopy (SEM) results confirmed the monoclinic structure with a particle size of around 85 nm. The investigation of thermal properties was carried out by thermogravimetric (TG) and differential thermal analysis (DTA). We also studied the electrochemical response of green synthesized CuO nanoparticles to detect Dopamine (DA) using cyclic voltammetry, which was proven to be an excellent electrocatalyst for the electro-oxidation of DA. The fabricated CuO nanoparticle modified carbon paste electrode (CMCPE) depicts fantastic selectivity, robustness, and sensitivity in analyzing DA in clinical and pharmaceutical preparations. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) orbitals of the DA were studied using positive and negative charges at the CuO modified carbon paste electrode interface. Frontier molecular orbitals of DA are plotted to understand electron transfer reactivity at the electrode interface.
Keywords: CuO nanoparticles; charge kinetics; frontier molecular orbitals; cyclic voltammetry; dopamine sensor CuO nanoparticles; charge kinetics; frontier molecular orbitals; cyclic voltammetry; dopamine sensor

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MDPI and ACS Style

Rajendrachari, S.; Kudur Jayaprakash, G.; Pandith, A.; Karaoglanli, A.C.; Uzun, O. Electrocatalytic Investigation by Improving the Charge Kinetics between Carbon Electrodes and Dopamine Using Bio-Synthesized CuO Nanoparticles. Catalysts 2022, 12, 994. https://doi.org/10.3390/catal12090994

AMA Style

Rajendrachari S, Kudur Jayaprakash G, Pandith A, Karaoglanli AC, Uzun O. Electrocatalytic Investigation by Improving the Charge Kinetics between Carbon Electrodes and Dopamine Using Bio-Synthesized CuO Nanoparticles. Catalysts. 2022; 12(9):994. https://doi.org/10.3390/catal12090994

Chicago/Turabian Style

Rajendrachari, Shashanka, Gururaj Kudur Jayaprakash, Anup Pandith, Abdullah Cahit Karaoglanli, and Orhan Uzun. 2022. "Electrocatalytic Investigation by Improving the Charge Kinetics between Carbon Electrodes and Dopamine Using Bio-Synthesized CuO Nanoparticles" Catalysts 12, no. 9: 994. https://doi.org/10.3390/catal12090994

APA Style

Rajendrachari, S., Kudur Jayaprakash, G., Pandith, A., Karaoglanli, A. C., & Uzun, O. (2022). Electrocatalytic Investigation by Improving the Charge Kinetics between Carbon Electrodes and Dopamine Using Bio-Synthesized CuO Nanoparticles. Catalysts, 12(9), 994. https://doi.org/10.3390/catal12090994

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