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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.3
- 수록면
- 21 - 28 (8page)
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In this study, the applicability of visible light-emitting-diodes (LEDs) to the photocatalytic degradation of indoor-level trichloroethylene (TCE) and perchloroethylene (PCE) over N-doped TiO₂ (N-TiO₂) was examined under a range of operational conditions. The N-TiO₂ photocatalyst was calcined at 650oC (labeled N-650) showed the lowest degradation efficiencies for TCE and PCE, while the N-TiO₂ photocatalysts calcined at 350oC, 450oC, and 550oC (labeled as N-350, N-450, and N-550, respectively) exhibited similar or slightly different degradation efficiencies to those of TCE and PCE. These results were supported by the X-ray diffraction patterns of N-350, N-450, N-550, and N-650. The respective average degradation efficiencies for TCE and PCE were 96% and 77% for the 8-W lamp/N-TiO₂ system, 32% and 20% for the violet LED/N-TiO₂ system, and ~0% and 4% for the blue LED/N-TiO₂ system. However, the normalized photocatalytic degradation efficiencies for TCE and PCE for the violet LED-irradiated N-TiO₂ system were higher than those from the 8-W fluorescent daylight lamp-irradiated N-TiO₂ system. Although the difference was not substantial, the degradation efficiencies exhibited a decreasing trend with increasing input concentrations. The degradation efficiencies for TCE and PCE decreased with increasing air flow rates. In general, the degradation efficiencies for both target compounds decreased as relative humidity increased. Consequently, it was indicated that violet LEDs can be utilized as energy-efficient light sources for the photocatalytic degradation of TCE and PCE, if operational conditions of N-TiO₂ photocatalytic system are optimized.
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참고문헌 (31)
참고문헌 신청
1. [학술지(정기간행물)] - Jeong HY / 2007 / Reductive dechlorination of tetrachloroethylene and trichloroethylene by mackinawite (FeS) in the presence of metals: reaction rates / Environ. Sci. Technol 41 : 6390 ~ 6396
2. [학술지(정기간행물)] - Moran MJ / 2007 / Chlorinated solvent in groundwater of the United States / Environ. Sci. Technol 41 : 74 ~ 81
3. [학술지(정기간행물)] - Nazaroff WW / 2004 / Cleaning products and air fresheners: exposure to primary and secondary air pollutants / Atmos. Environ 38 : 2841 ~ 2865
4. [학술지(정기간행물)] - Gallego E / 2009 / Determining in door air quality and identifying the origin of odour episodes in indoor environments / J. Environ. Sci 21 : 333 ~ 339
5. [학술지(정기간행물)] - Zoccolillo L / 2009 / Comparison of atmosphere/ aquatic environment concentration ratio of volatile chlorinated hydrocarbons between temperate regions and Antarctica / Chemosphere 76 : 1525 ~ 1532
2. [학술지(정기간행물)] - Moran MJ / 2007 / Chlorinated solvent in groundwater of the United States / Environ. Sci. Technol 41 : 74 ~ 81
3. [학술지(정기간행물)] - Nazaroff WW / 2004 / Cleaning products and air fresheners: exposure to primary and secondary air pollutants / Atmos. Environ 38 : 2841 ~ 2865
4. [학술지(정기간행물)] - Gallego E / 2009 / Determining in door air quality and identifying the origin of odour episodes in indoor environments / J. Environ. Sci 21 : 333 ~ 339
5. [학술지(정기간행물)] - Zoccolillo L / 2009 / Comparison of atmosphere/ aquatic environment concentration ratio of volatile chlorinated hydrocarbons between temperate regions and Antarctica / Chemosphere 76 : 1525 ~ 1532
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UCI(KEPA) : I410-ECN-0101-2017-539-001538495