Glucose Oxidation Performance of Zinc Nano-Hexagons Decorated on TiO<sub>2</sub> Nanotube Arrays
Electrochemically anodized TiO<sub>2</sub> nanotube arrays (NTAs) were used as a support material for the electrodeposition of zinc nanoparticles. The morphology, composition, and crystallinity of the materials were examined using scanning electron microscopy (SEM). Electrochemical imped...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-10-01
|
| Series: | Nanomanufacturing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-687X/4/4/13 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Electrochemically anodized TiO<sub>2</sub> nanotube arrays (NTAs) were used as a support material for the electrodeposition of zinc nanoparticles. The morphology, composition, and crystallinity of the materials were examined using scanning electron microscopy (SEM). Electrochemical impedance spectroscopy (EIS) was performed to evaluate the electrochemical properties of TiO<sub>2</sub> NTAs. Annealing post-anodization was shown to be effective in lowering the impedance of the TiO<sub>2</sub> NTAs (measured at 1 kHz frequency). Zinc nanohexagons (NHexs) with a mean diameter of ~300 nm and thickness of 10–20 nm were decorated on the surface of TiO<sub>2</sub> NTAs (with a pore diameter of ~80 nm and tube length of ~5 µm) via an electrodeposition process using a zinc-containing deep eutectic solvent. EIS and CV tests were performed to evaluate the functionality of zinc-decorated TiO<sub>2</sub> NTAs (Zn/TiO<sub>2</sub> NTAs) for glucose oxidation applications. The Zn/TiO<sub>2</sub> NTA electrocatalysts obtained at 40 °C demonstrated enhanced glucose sensitivity (160.8 μA mM<sup>−1</sup> cm<sup>−2</sup> and 4.38 μA mM<sup>−1</sup> cm<sup>−2</sup>) over zinc-based electrocatalysts reported previously. The Zn/TiO<sub>2</sub> NTA electrocatalysts developed in this work could be considered as a promising biocompatible electrocatalyst material for in vivo glucose oxidation applications. |
|---|---|
| ISSN: | 2673-687X |