ISSN : 1738-4125(Print)
ISSN : 2287-7509(Online)
ISSN : 2287-7509(Online)
실내 공기 수준 톨루엔과 에틸벤젠 제어를 위한 황 도핑 산화티타늄으로 코팅된 가시광선 유도 연속 광촉매 반응기 활용
Application of Continuous Visible-Light Induced Photocatalytic Reactor Coated with Sulfur-Doped TiO2 for Control of Toluene and Ethyl benzene at Indoor Levels
Abstract
the less-reported gaseous studies have primarily dealt with chemical process stream concentrations thanindoor air quality (IAQ) concentration levels. Accordingly, the current study was conducted to establish thefeasibility of applying visible-light-induced TiO2 doped with sulfur (S) element to cleanse toluene and ehtylbenzene at IAQ levels. The S-doped TiO2 was prepared by applying two popular processes and twowell-known methods. For both target compounds, the two coating methods exhibited different photocatalyticoxidation (PCO) efficiency. Similarly, the two S-doping processes showed different PCO efficiency. Theseresults indicate that the coating method and doping process are important parameters which can influencePCO efficiency. Meanwhile, it was found that the PCO efficiency of ethyl benzene was higher than that oftoluene. In addition, the degradation efficiency of the target compounds increased as the relative humidity(RH) decreased. The PCO efficiency varied from 44% to 74% for toluene and from 68% to 95%, as the RHdecreased. Consequently, it is suggested that with appropriate RH conditions, the visible-light-assistedphotocatalytic systems can also become an important tool for improving IAQ.
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