한국환경과학회지 제27권 제11호 (p.967-974)

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

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
키워드 :
TiO2 nanotube,WO3,Photocatalytic oxidation efficiency,Light source

목차

Abstract
1. 서 론
2. 재료 및 방법
  2.1. 실험재료
  2.2. 광반응 나노소재 특성 분석
  2.3. 광반응 나노소재 활성 시험
3. 결과 및 고찰
  3.1. 특성평가
  3.2. 광반응 나노소재 활성도 평가
4. 결 론
REFERENCES

초록

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.