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Ag-Decorated Vertically Aligned ZnO Nanorods for Non-Enzymatic Glucose Sensor Applications

The non-enzymatic glucose sensing response of pure and Ag-decorated vertically aligned ZnO nanorods grown on Si substrates was investigated. The simple low-temperature hydrothermal method was employed to synthesize the ZnO NRs on the Si substrates, and then Ag decoration was achieved by sputtering....

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Autores principales: Lin, Yu-Hsuan, Sivakumar, Chandrasekar, Balraj, Babu, Murugesan, Gowtham, Nagarajan, Senthil Kumar, Ho, Mon-Shu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9965292/
https://www.ncbi.nlm.nih.gov/pubmed/36839123
http://dx.doi.org/10.3390/nano13040754
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author Lin, Yu-Hsuan
Sivakumar, Chandrasekar
Balraj, Babu
Murugesan, Gowtham
Nagarajan, Senthil Kumar
Ho, Mon-Shu
author_facet Lin, Yu-Hsuan
Sivakumar, Chandrasekar
Balraj, Babu
Murugesan, Gowtham
Nagarajan, Senthil Kumar
Ho, Mon-Shu
author_sort Lin, Yu-Hsuan
collection PubMed
description The non-enzymatic glucose sensing response of pure and Ag-decorated vertically aligned ZnO nanorods grown on Si substrates was investigated. The simple low-temperature hydrothermal method was employed to synthesize the ZnO NRs on the Si substrates, and then Ag decoration was achieved by sputtering. The crystal structure and surface morphologies were characterized by X-ray diffraction, field-emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The Ag incorporation on the ZnO NR surfaces was confirmed using EDS mapping and spectra. Furthermore, the chemical states, the variation in oxygen vacancies, and the surface modifications of Ag@ZnO were investigated by XPS analysis. Both the glucose/ZnO/Si and glucose/Ag@ZnO/Si device structures were investigated for their non-enzymatic glucose sensing performances with different glucose concentrations. Based on EIS measurements and amperometric analysis, the Ag@ZnO-NR-based glucose sensor device exhibited a better sensing ability with excellent stability over time than pure ZnO NRs. The Ag@ZnO NR glucose sensor device recorded 2792 µA/(mM·cm(2)) sensitivity with a lowest detection limit of 1.29 µM.
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spelling pubmed-99652922023-02-26 Ag-Decorated Vertically Aligned ZnO Nanorods for Non-Enzymatic Glucose Sensor Applications Lin, Yu-Hsuan Sivakumar, Chandrasekar Balraj, Babu Murugesan, Gowtham Nagarajan, Senthil Kumar Ho, Mon-Shu Nanomaterials (Basel) Article The non-enzymatic glucose sensing response of pure and Ag-decorated vertically aligned ZnO nanorods grown on Si substrates was investigated. The simple low-temperature hydrothermal method was employed to synthesize the ZnO NRs on the Si substrates, and then Ag decoration was achieved by sputtering. The crystal structure and surface morphologies were characterized by X-ray diffraction, field-emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The Ag incorporation on the ZnO NR surfaces was confirmed using EDS mapping and spectra. Furthermore, the chemical states, the variation in oxygen vacancies, and the surface modifications of Ag@ZnO were investigated by XPS analysis. Both the glucose/ZnO/Si and glucose/Ag@ZnO/Si device structures were investigated for their non-enzymatic glucose sensing performances with different glucose concentrations. Based on EIS measurements and amperometric analysis, the Ag@ZnO-NR-based glucose sensor device exhibited a better sensing ability with excellent stability over time than pure ZnO NRs. The Ag@ZnO NR glucose sensor device recorded 2792 µA/(mM·cm(2)) sensitivity with a lowest detection limit of 1.29 µM. MDPI 2023-02-17 /pmc/articles/PMC9965292/ /pubmed/36839123 http://dx.doi.org/10.3390/nano13040754 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lin, Yu-Hsuan
Sivakumar, Chandrasekar
Balraj, Babu
Murugesan, Gowtham
Nagarajan, Senthil Kumar
Ho, Mon-Shu
Ag-Decorated Vertically Aligned ZnO Nanorods for Non-Enzymatic Glucose Sensor Applications
title Ag-Decorated Vertically Aligned ZnO Nanorods for Non-Enzymatic Glucose Sensor Applications
title_full Ag-Decorated Vertically Aligned ZnO Nanorods for Non-Enzymatic Glucose Sensor Applications
title_fullStr Ag-Decorated Vertically Aligned ZnO Nanorods for Non-Enzymatic Glucose Sensor Applications
title_full_unstemmed Ag-Decorated Vertically Aligned ZnO Nanorods for Non-Enzymatic Glucose Sensor Applications
title_short Ag-Decorated Vertically Aligned ZnO Nanorods for Non-Enzymatic Glucose Sensor Applications
title_sort ag-decorated vertically aligned zno nanorods for non-enzymatic glucose sensor applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9965292/
https://www.ncbi.nlm.nih.gov/pubmed/36839123
http://dx.doi.org/10.3390/nano13040754
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