Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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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

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

  • 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.)
  • 조완근 (경북대학교 환경공학과) ;
  • 신승호 (대구보건대학교 보건환경과) ;
  • 최정학 (부산가톨릭대학교 환경공학과) ;
  • 이준엽 ((주)켐토피아 기업부설 생활환경연구소)
  • Received : 2018.06.08
  • Accepted : 2018.08.01
  • Published : 2018.11.30
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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.

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References

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