Publication:
Empirical kinetics for the growth of titania nanotube arrays by potentiostatic anodization in ethylene glycol

Loading...
Thumbnail Image
Authors
Cortes, Francisco Javier Quintero
Arias-Monje, Pedro Jose
Phillips, Jonathan
Zea, Hugo
Subjects
Titania nanotube arrays
anodization
kinetics
Advisors
Date of Issue
2015
Date
Publisher
Language
Abstract
The goal of this research was to describe the effects of the main anodization variables on the morphology of the resulting titania nanotube arrays. Four variables were considered in this study: applied voltage, fluoride and water concentrations, and time. The first three variables were studied simultaneously in a central composite design of experiments using SEM measurements of tube length as the response variable. The effect of time was modeled using transferred charge as the response variable. A field assisted oxidation-dissolution growth model was validated over a broad range of experimental conditions under which tube growth can be accurately predicted directly from the current transients using Faraday’s laws. The effects of anodization variables were described based on this model and a simple, empirical kinetic expression was obtained and successfully tested against data from other authors with fairly small errors over a broad range of conditions.
Type
Article
Description
Series/Report No
Department
Physics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
National University of Colombia and Colciencias, grants number 19163 and 21551
Format
Citation
Cortes, Francisco Javier Quintero, et al. "Empirical kinetics for the growth of titania nanotube arrays by potentiostatic anodization in ethylene glycol." Materials & Design, v. 96 (2016): pp. 80-89
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Collections