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Electrochemical deposition of gold nanoparticles-based plasmonic catalyst for glucose oxidation

Van Quynh, N. and Minh, N.B. and Thanh, D.T.M. and Lam, N.L. and Anh, N.T. (2020) Electrochemical deposition of gold nanoparticles-based plasmonic catalyst for glucose oxidation. Vietnam Journal of Chemistry, 58 (6). pp. 785-791. ISSN 25728288

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Abstract

This work describes an effective electrodeposition method for generating gold plasmonic electrodes which are further used for detecting glucose in solution without the presence of any enzymes (i.e Gox). Under light irradiation, the electro-catalytic oxidation of glucose on the electrodeposited gold nanoparticle (AuNP) surfaces has been investigated. The wavelength-dependent electrochemical oxidative current intensity implies that the hot carriers transferred from the excited plasmonic AuNPs to the absorbed molecules are responsible for enhancing electro-catalysis performance. Hot holes can particularly contribute to the oxidation reaction of glucose on the plasmonic surfaces without the presence of any enzymes in solution. Furthermore, the presence of nano-sized gold particles exhibits a larger active surface area, which leads to a significant improvement in recorded oxidative current for the oxidation of glucose. These results reveal a promising manner for generating non-enzymatic glucose electrochemical sensor upon plasmonic excitation. © 2020 Vietnam Academy of Science and Technology, Hanoi & Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Item Type: Article
Divisions: Faculties > Faculty of Physical and Chemical Engineering
Identification Number: 10.1002/vjch.202000030
Uncontrolled Keywords: Catalytic oxidation; Electrochemical sensors; Electrodes; Enzyme electrodes; Enzymes; Glucose; Gold nanoparticles; Metal nanoparticles; Nanocatalysts; Oxidation; Plasmonic nanoparticles; Plasmonics; Reduction; Active surface area; Deposition of gold nanoparticles; Electro-catalytic oxidation; Electrodeposited golds; Electrodeposition methods; Light irradiations; Nanosized gold particles; Oxidation reactions; Electrochemical deposition
Additional Information: Language of original document: English.
URI: http://eprints.lqdtu.edu.vn/id/eprint/8848

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