| 학회 |
한국화학공학회 |
| 학술대회 |
2008년 봄 (04/23 ~ 04/25, 제주ICC) |
| 권호 |
14권 1호, p.721 |
| 발표분야 |
에너지/환경 |
| 제목 |
Effects of nitridation treatment on the visible light photocatalytic activity of TiO2 and Pt-TiO2 |
| 초록 |
We have investigated the effects of nitridation treatment of TiO2 and Pt-TiO2 for the visible light photocatalytic degradations of 4-CP and DCA degradation. Nitridation treatment changed the physicochemical properties of TiO2 and Pt-TiO2. The primary particle size of nitrided samples, n-TiO2 and n-Pt-TiO2, was slightly smaller than that of untreated samples. Surface area was increased more than two times after nitridation treatment. Thermal phase transformation (anatase to rutile) was retarded by the nitridation treatment. The visible light absorption of n-Pt-TiO2 was more extended than that of Pt-TiO2 and Pt(II)/Pt(IV) ratio in n-Pt-TiO2 was lower than that in Pt-TiO2. Enhanced photocatalytic activities of nitrided samples were observed for 4-CP degradation under UV and visible irradiation. However, the enhancement effect of nitridation treatment was not observed under visible irradiation for DCA degradation. Photocatalytic activity was restrictively enhanced and signifinactly affected by the kind of substrates. |
| 저자 |
김순현, 이수근
|
| 소속 |
대구경북과학기술(연) |
| 키워드 |
Photocatalysis; TiO2; Pt-TiO2; Nitridation
|
| E-Mail |
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| 원문파일 |
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