This study evaluated the photocatalytic oxidation efficiency of volatile organic compounds by Cu2O -TiO2 under visible-light irradiation. Cu2O-TiO2 was synthesized by an ultrasonic-assisted method. The XRD result indicated successful p-n type photocatalysts. However, no diffraction peaks belonging to TiO2 were observed for the Cu2O-TiO2. The Uv-vis spectra result revealed that the synthesized Cu2O-TiO2 can be activated under visible-light irradiation. The FE-TEM/EDS result showed the formation of synthesized nanocomposites in the commercial P25 TiO2, the undoped TiO2, and Cu2O-TiO2 and componential analysis in the undoped TiO2 and Cu2O-TiO2. The photocatalytic oxidation efficiencies of benzene, toluene, ethylbenzene, and o-xylene with Cu2O-TiO2 were higher than those of P25 TiO2 and undoped TiO2. These results indicate that the prepared Cu2O-TiO2 photocatalyst can be applied effectively to control gaseous BTEX.

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

• 이준엽((주)켐토피아 생활환경연구센터) | Joon Yeob Lee (Life Environmental R&D Center, Chemtopia Co. Ltd.) Corresponding author
• 김지훈(대구보건대학교 환경보건과) | Ji-hoon Kim (Department of Environmental & Public Health, Daegu Health College)
• 최정학(부산가톨릭대학교 환경공학과) | Jeong-Hak Choi (Department of Environmental Engineering, Catholic University of Pusan)
• 신승호(대구보건대학교 환경보건과) | Seung-ho Shin (Department of Environmental & Public Health, Daegu Health College)