| 학회 |
한국재료학회 |
| 학술대회 |
2016년 봄 (05/18 ~ 05/20, 여수 디오션리조트 ) |
| 권호 |
22권 1호 |
| 발표분야 |
E. 환경/센서 재료분과 |
| 제목 |
Self-cleaning performance of sol-gel derived Ag-F-TiO2/SiO2 double layer thin films |
| 초록 |
The self-cleaning properties of the Ag-F-TiO2/SiO2 double layer thin films prepared by sol-gel method were investigated. Thin films were prepared by spin-coating onto glass and then thermally treated at 400℃(SiO2) and 500℃(Ag-F-TiO2). The prepared thin films were characterized for their physical and chemical properties by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-Vis spectrophotometer, atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL). UV-Vis absorption spectra showed that the light absorption of Ag-F-TiO2/SiO2 in the visible region had a significant enhancement compare with TiO2/SiO2. The photo-induced hydrophilicity of the films was evaluated by water contact angle measurement in air. The self-cleaning properties of the films were studied by the photocatalytic degradation of the methylene blue under UV and visible light irradiation. The highest photocatalytic degradation was obtained for Ag-F-TiO2/SiO2 under UV and visible light irradiation. The interaction between F species and metallic Ag in the Ag-F-TiO2/SiO2 was responsible for improving the self-cleaning properties. The Ag-F-TiO2/SiO2 double layer thin films are plausibly applicable to developing self-cleaning materials in various applications such as windows, solar panels, cement and paints. |
| 저자 |
Byeong-Min Kim1, Hemraj M. Yadav2, Jung-Sik Kim3
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| 소속 |
1Department of Materials Science and Engineering, 2The Univ. of Seoul, 3Seoul 130-743 |
| 키워드 |
self-cleaning properties; Ag-F-TiO<SUB>2</SUB>/SiO<SUB>2</SUB>; thin films; photocatalytic degradation
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| E-Mail |
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