Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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A Study on Comparison and Evaluation Standard of Photocatalytic Activity for Commercial TiO2

광촉매 TiO2의 반응활성 비교 . 평가 기준에 관한 연구

  • Lee, Sang-Jin (Department of Environmental Engineering, Kyonggi University) ;
  • Hong, Sung-Chang (Department of Environmental Engineering, Kyonggi University)
  • Published : 2008.07.31
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Abstract

This study was investigated experimental condition which is able to evaluate photocatalytic activity of various commercial $TiO_2$. The experiments were performed for three representative substances (ethanol, phenol and methylene blue) and four kinds of commercial $TiO_2$, under the experimental conditions such as pH, reactant concentration, amount of $TiO_2$, reaction time and UV intensity. The optimum experimental conditions to evaluate photocatalytic activity were as follows : for ethanol, the initial concentration 1000 ppm, initial pH 8, $TiO_2$ loadings 0.1 wt%, and reaction time 90 minutes: for phenol, the initial concentration 200 ppm, initial pH 8, $TiO_2$ loadings 1 wt%, and reaction time 60 minutes: for methylene blue, the initial concentration 200 ppm, initial pH 4, $TiO_2$ loadings 0.5 wt%, and reaction time 30 minutes.

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References

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