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ISSN : 1225-4517(Print)
ISSN : 2287-3503(Online)
Journal of Environmental Science International Vol.27 No.11 pp.967-974
DOI : https://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

Wan-Kuen Jo1), Seung-Ho Shin2), Jeong-Hak Choi3), Joon Yeob Lee*
Department of Environmental Engineering, Kyungpook National University, Daegu 47514, Korea
1)Department of Health Environment, Daegu Health College, Daegu 41453, Korea
2)Department of Environmental Engineering, Catholic University of Pusan, Pusan 46252, Korea
3)Life Environmental R&D Center, Chemtopia Co. Ltd., Seoul 08377, Korea
*Corresponding author: Joon Yeob Lee, Life Environmental R&D Center, Chemtopia Co.Ltd., Seoul 08377, Korea Phone : 82-70-4361-3054

Abstract

In this study, we evaluated the photocatalytic oxidation efficiency of aromatic volatile hydrocarbons by using WO3–doped TiO2 nanotubes (WTNTs) under visible-light irradiation. One-dimensional WTNTs were synthesized by ultrasonic-assisted hydrothermal method and impregnation. XRD analysis revealed successful incorporation of WO3 into TiO2 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.

초음파-수열합성 적용 가시광 활성 일차원 금속산화물 도핑 반도체 나노소재를 이용한 방향족 휘발성 탄화수소 제어효율 평가

조완근, 신승호1), 최정학2), 이준엽3)*
경북대학교 환경공학과, 1)대구보건대학교 보건환경과, 2)부산가톨릭대학교 환경공학과,3) 켐토피아 기업부설 생활환경연구소

초록

 

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