Characteristics of TiO2 Nanotubes Fabricated by High-Frequency Cyclic Anodization
- 23 February 2021
- journal article
- research article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 168 (3), 036504
- https://doi.org/10.1149/1945-7111/abe8ed
Abstract
This study investigates the fabrication of TiO2 nanotubes (TNTs) using the cyclic anodization of Ti foil with high frequency. High-frequency cyclic anodization with increasing duty cycles yields longer, larger, and more regular TNTs, but the walls of the TNTs are thinner. The photocatalytic degradation of methyl orange dye by TNTs indicates that a higher duty cycle during the fabrication of TNTs yields improved performance. For example, the reaction rate constant with a 75% duty cycle (0.0151 ± 0.0003 /min) is 1.28 times higher than that with a 0% duty cycle (0.0118 ± 0.0018 /min). It only takes half the time for a 75% duty cycle to reach 70% degradation percentage as compared to, that for the 0% duty cycle. Nevertheless, high-frequency cyclic anodization with increasing duty cycles tends to generate more nanograss on the TNTs and causes a reduction in the TNT strength. Additionally, increasing the duty cycle yields few improvements in the photocurrent and the preferential orientation of anatase TNTs.Keywords
Funding Information
- Shanghai International Fund for scientific and technological cooperation (No. 17230732300)
- Shanghai Committee of Science and Technology (No.16ZR1414800)
This publication has 46 references indexed in Scilit:
- Split TiO2 nanotubes − Evidence of oxygen evolution during Ti anodizationElectrochemistry Communications, 2019
- Photocatalytic degradation of metoprolol by TiO2 nanotube arrays and UV-LED: Effects of catalyst properties, operational parameters, commonly present water constituents, and photo-induced reactive speciesApplied Catalysis B: Environmental, 2017
- Effect of ethylene glycol concentration on the morphology and catalytic properties of TiO2 nanotubesCatalysis Communications, 2017
- Aminated TiO 2 nanotubes as a photoelectrochemical water splitting photoanodeCatalysis Today, 2017
- Electrochemical oxidation of cinnamic acid with Mo modified PbO 2 electrode: Electrode characterization, kinetics and degradation pathwayChemical Engineering Journal, 2016
- Applications of TiO2 nanotube arrays in environmental and energy fields: A reviewMicroporous and Mesoporous Materials, 2015
- One-Dimensional Titanium Dioxide Nanomaterials: Nanowires, Nanorods, and NanobeltsChemical Reviews, 2014
- Electrochemical engineering of hollow nanoarchitectures: pulse/step anodization (Si, Al, Ti) and their applicationsChemical Society Reviews, 2013
- Some critical factors for photocatalysis on self-organized TiO2 nanotubesJournal of Solid State Electrochemistry, 2012
- Ordered mesoporous metal oxides: synthesis and applicationsChemical Society Reviews, 2012