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http://dx.doi.org/10.15681/KSWE.2016.32.5.403

Evaluation of OH Radical Generation to Nanotube Morphology of TiO2 Nanotube Plate  

Lee, Yongho (Graduate School of Energy & Environment, Department of Environmental Engineering, Seoul National University of Science & Technology)
Pak, Daewon (Graduate School of Energy & Environment, Department of Environmental Engineering, Seoul National University of Science & Technology)
Publication Information
Journal of Korean Society on Water Environment / v.32, no.5, 2016 , pp. 403-409 More about this Journal
Abstract
In this study, a TiO2 nanotube was grown on a titanium plate by using anodic oxidation method for the evaluation of TiO2 nanotube morphology. The TiO2 nanotube was grown in an electrolyte containing ethylene glycol, 0.2 wt% of NH4F and 2 vol% of H2O. Applied voltage varied from 30 to 70 V and the morphology of the TiO2 nanotube was observed. After anodization, a TiO2 nanotube plate was immersed in 35℃ ethanol for 24 hours. Anatase and rutile crystal forms of TiO2 nanoutbe were observed after annealing. 4-chrolobenzoic acid, a probe compound for OH radicals, was dissolved in H2O in order to measure the OH radical. Liquid chromatography was used to check the concentration of the 4-chrolobenzoic acid. The OH radical generation by TiO2 nanotube plate was proportionate to the length of the TiO2 nanotube. Furthermore, when the number of TiO2 nanotube plate increased, the OH radical generation increased as well.
Keywords
Anodization; Electric Current; Photocatalyst; TiO2; TiO2 nanotube plate;
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Times Cited By KSCI : 1  (Citation Analysis)
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