고효율 가시광 반응형 광촉매를 이용한 NOx의 광저감율 평가

초록

Titania is widely used as an effective photocatalyst for the photodegradation of environmental pollutants in air. In this study, novel N-doped ZrO2/TiO2 photocatalysts were synthesized via sol-gel method and characterized by UV-Vis spectrophotometer, transmission electron microscope, and X-ray diffractometer. N-doped ZrO2/TiO2 photocatalysts were nano-sized with an average particle size of about 20 nm. The XRD pattern of N-doped ZrO2/TiO2 photocatalysts showed both anatase and rutile phases. The photocatalytic activity of N-doped ZrO2/TiO2 photocatalysts was evaluated by degradation of NO under UV and visible light irradiation at various parameters such as amount of photocatalyst, concentration of NO, and intensity of light. The photocatalytic activity of N-doped ZrO2/TiO2 photocatalysts was effective for the enhancement of the degradation of NO and higher than that of TiO2 photocatlysts under UV and visible light irradiation.

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