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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2008.12
- 수록면
- 171 - 176 (6page)
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Studies on visible-light-driven photocatalysis of air pollutants at indoor air quality (IAQ) levels have been limited. Current study investigated visible-light derived photocatalysis with N-doped and S-doped titanium dioxide (TiO₂) for the control of benzene at indoor levels. Two preparation processes were employed for each of the two types of photocatalyst: urea-Degussa P-25 TiO₂ and titania-colloid methods for the N-doped TiO₂; and titanium isopropoxid- and tetraisopropoxide-thiourea methods for the S-doped TiO₂. Furthermore, two coating methods (EDTA- and acetylacetone- dissolving methods) were tested for both the N-doped and S-doped TiO₂. The two coating methods exhibited different photocatalytic degradation efficiency for the N-doped photocatalysts, whereas they did not exhibit any difference for the S-doped photocatalysts. In addition, the two doping processes showed different photocatalytic degradation efficiency for both the S-doped and N-doped photocatalysts. For both the N-doped and S- doped TiO₂, the photocatalytic oxidation (PCO) efficiency increased as the hydraulic diameter (HD) decreased. The degradation efficiency determined via a PCO system with visible-light induced TiO₂ was lower than that with UV-light induced unmodified TiO₂, which was obtained from previous studies. Nevertheless, it is noteworthy that for the photocatalytic annular reactor with the HD of 0.5 cm, PCO efficiency increased up to 52% for the N-doped TiO₂ and 60% for the S-doped TiO₂. Consequently, when combined with the advantage of visible light use over UV light use, it is suggested that with appropriate HD conditions, the visible-light-assisted photocatalytic systems can also become an important tool for improving IAQ.
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참고문헌 (34)
참고문헌 신청
1. [학술지(정기간행물)] - Järnström, H / 2006 / Reference values for indoor air pollutant concentrations in new residential buildings in Finland / Atmos. Environ 40 : 7178 ~ 7191
2. [학술지(정기간행물)] - Singer, B. C / 2006 / Cleaning products and air fresheners: emissions and resulting concentrations of glycol ethers and terpenoids / Indoor Air 16 : 179 ~ 191
3. [학술지(정기간행물)] - Wang, B / 2007 / Characteristics of carbonyls: Concentrations and source strengths for indoor and outdoor residential microenvironments in China / Atmos. Environ 41 : 2851 ~ 2861
4. [학술지(정기간행물)] - Buzcu, B / 2006 / Source identification and apportionment of volatile organic compounds in Houston, Tx / Atmos. Environ 40 : 2385 ~ 2400
5. [학술지(정기간행물)] - Kawashima, H / 2006 / Volatile organic compound emission factors from roadside measurements / Atmos. Environ 40 : 2301 ~ 2312
2. [학술지(정기간행물)] - Singer, B. C / 2006 / Cleaning products and air fresheners: emissions and resulting concentrations of glycol ethers and terpenoids / Indoor Air 16 : 179 ~ 191
3. [학술지(정기간행물)] - Wang, B / 2007 / Characteristics of carbonyls: Concentrations and source strengths for indoor and outdoor residential microenvironments in China / Atmos. Environ 41 : 2851 ~ 2861
4. [학술지(정기간행물)] - Buzcu, B / 2006 / Source identification and apportionment of volatile organic compounds in Houston, Tx / Atmos. Environ 40 : 2385 ~ 2400
5. [학술지(정기간행물)] - Kawashima, H / 2006 / Volatile organic compound emission factors from roadside measurements / Atmos. Environ 40 : 2301 ~ 2312
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UCI(KEPA) : I410-ECN-0101-2017-539-001546964