The Influence of the Parameters of a Gold Nanoparticle Deposition Method on Titanium Dioxide Nanotubes, Their Electrochemical Response, and Protein Adsorption
The goal of this research was to find the best conditions to prepare titanium dioxide nanotubes (TNTs) modified with gold nanoparticles (AuNPs). This paper, for the first time, reports on the influence of the parameters of cyclic voltammetry process (CV) -based AuNP deposition, i.e., the number of c...
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doaj-6eb0f8b295dc47d0bea5a67a7a1fa1032020-11-25T01:18:40ZengMDPI AGBiosensors2079-63742019-11-019413810.3390/bios9040138bios9040138The Influence of the Parameters of a Gold Nanoparticle Deposition Method on Titanium Dioxide Nanotubes, Their Electrochemical Response, and Protein AdsorptionEwa Paradowska0Katarzyna Arkusz1Dorota G. Pijanowska2Department of Biomedical Engineering, Faculty of Mechanical Engineering, University of Zielona Gora, Prof. Z. Szafrana 4, 54-516 Zielona Gora, PolandDepartment of Biomedical Engineering, Faculty of Mechanical Engineering, University of Zielona Gora, Prof. Z. Szafrana 4, 54-516 Zielona Gora, PolandNalecz Institute of Biocybernetics and Biomedical Engineering, Polish Academy of Sciences, Ks. Trojdena 4, 02-109 Warszawa, PolandThe goal of this research was to find the best conditions to prepare titanium dioxide nanotubes (TNTs) modified with gold nanoparticles (AuNPs). This paper, for the first time, reports on the influence of the parameters of cyclic voltammetry process (CV) -based AuNP deposition, i.e., the number of cycles and the concentration of gold salt solution,on corrosion resistance and the capacitance of TNTs. Another innovation was to fabricate AuNPs with well-formed spherical geometry and uniform distribution on TNTs. The AuNPs/TNTs were characterized using scanning electron microscopy, X-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, and open-circuit potential measurement. From the obtained results,the correlation between the deposition process parameters, the AuNP diameters,and the electrical conductivity of the TNTs was found in a range from 14.3 ± 1.8 to 182.3 ± 51.7 nm. The size and amount of the AuNPs could be controlled by the number of deposition cycles and the concentration of the gold salt solution.The modification of TNTs using AuNPs facilitated electron transfer, increased the corrosion resistance, and caused better adsorption properties for bovine serum albumin.https://www.mdpi.com/2079-6374/9/4/138titanium dioxide nanotubesgold nanoparticlesdeposition processcyclic voltammetryelectrochemical characteristicsprotein adsorption |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ewa Paradowska Katarzyna Arkusz Dorota G. Pijanowska |
spellingShingle |
Ewa Paradowska Katarzyna Arkusz Dorota G. Pijanowska The Influence of the Parameters of a Gold Nanoparticle Deposition Method on Titanium Dioxide Nanotubes, Their Electrochemical Response, and Protein Adsorption Biosensors titanium dioxide nanotubes gold nanoparticles deposition process cyclic voltammetry electrochemical characteristics protein adsorption |
author_facet |
Ewa Paradowska Katarzyna Arkusz Dorota G. Pijanowska |
author_sort |
Ewa Paradowska |
title |
The Influence of the Parameters of a Gold Nanoparticle Deposition Method on Titanium Dioxide Nanotubes, Their Electrochemical Response, and Protein Adsorption |
title_short |
The Influence of the Parameters of a Gold Nanoparticle Deposition Method on Titanium Dioxide Nanotubes, Their Electrochemical Response, and Protein Adsorption |
title_full |
The Influence of the Parameters of a Gold Nanoparticle Deposition Method on Titanium Dioxide Nanotubes, Their Electrochemical Response, and Protein Adsorption |
title_fullStr |
The Influence of the Parameters of a Gold Nanoparticle Deposition Method on Titanium Dioxide Nanotubes, Their Electrochemical Response, and Protein Adsorption |
title_full_unstemmed |
The Influence of the Parameters of a Gold Nanoparticle Deposition Method on Titanium Dioxide Nanotubes, Their Electrochemical Response, and Protein Adsorption |
title_sort |
influence of the parameters of a gold nanoparticle deposition method on titanium dioxide nanotubes, their electrochemical response, and protein adsorption |
publisher |
MDPI AG |
series |
Biosensors |
issn |
2079-6374 |
publishDate |
2019-11-01 |
description |
The goal of this research was to find the best conditions to prepare titanium dioxide nanotubes (TNTs) modified with gold nanoparticles (AuNPs). This paper, for the first time, reports on the influence of the parameters of cyclic voltammetry process (CV) -based AuNP deposition, i.e., the number of cycles and the concentration of gold salt solution,on corrosion resistance and the capacitance of TNTs. Another innovation was to fabricate AuNPs with well-formed spherical geometry and uniform distribution on TNTs. The AuNPs/TNTs were characterized using scanning electron microscopy, X-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, and open-circuit potential measurement. From the obtained results,the correlation between the deposition process parameters, the AuNP diameters,and the electrical conductivity of the TNTs was found in a range from 14.3 ± 1.8 to 182.3 ± 51.7 nm. The size and amount of the AuNPs could be controlled by the number of deposition cycles and the concentration of the gold salt solution.The modification of TNTs using AuNPs facilitated electron transfer, increased the corrosion resistance, and caused better adsorption properties for bovine serum albumin. |
topic |
titanium dioxide nanotubes gold nanoparticles deposition process cyclic voltammetry electrochemical characteristics protein adsorption |
url |
https://www.mdpi.com/2079-6374/9/4/138 |
work_keys_str_mv |
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