[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5322/JESI.2018.27.11.967

Evaluation of Oxidation Efficiency of Aromatic Volatile Hydrocarbons using Visible-light-activated One-Dimensional Metal Oxide Doping Semiconductor Nanomaterials prepared by Ultrasonic-assisted Hydrothermal Synthesis

Jo, Wan-Kuen (Department of Environmental Engineering, Kyungpook National University)
Shin, Seung-Ho (Department of Health Environment, Daegu Health College)
Choi, Jeong-Hak (Department of Environmental Engineering, Catholic University of Pusan)
Lee, Joon Yeob (Life Environmental R&D Center, Chemtopia Co. Ltd.)

Publication Information

Journal of Environmental Science International / v.27, no.11, 2018 , pp. 967-974 More about this Journal

Abstract

In this study, we evaluated the photocatalytic oxidation efficiency of aromatic volatile hydrocarbons by using $WO_3$ -doped $TiO_2$ nanotubes (WTNTs) under visible-light irradiation. One-dimensional WTNTs were synthesized by ultrasonic-assisted hydrothermal method and impregnation. XRD analysis revealed successful incorporation of $WO_3$ into $TiO_2$ nanotube (TNT) structures. UV-Vis spectra exhibited that the synthesized WTNT samples can be activated under visible light irradiation. FE-SEM and TEM images showed the one-dimensional structure of the prepared TNTs and WTNTs. The photocatalytic oxidation efficiencies of toluene, ethylbenzene, and o-xylene were higher using WTNT samples than undoped TNT. These results were explained based on the charge separation ability, adsorption capability, and light absorption of the sample photocatalysts. Among the different light sources, light-emitting-diodes (LEDs) are more highly energy-efficient than 8-W daylight used for the photocatalytic oxidation of toluene, ethylbenzene, and o-xylene, though the photocatalytic oxidation efficiency is higher for 8-W daylight.

Keywords

$TiO_2$ nanotube; $WO_3$ ; Photocatalytic oxidation efficiency; Light source;

Citations & Related Records

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