| 상온 진공 분말 분사공정에 의해 제조된 TiO2 광촉매 막의 두께변화에 따른 광촉매 특성 |
| 김근영, 류정호, 한병동, 최종진, 윤운하, 이병국, 박동수, 박찬1 |
한국기계연구원 부설 재료연구소 기능세라믹연구그룹
1부경대학교 재료공학과 |
| Effect of Film Thickness on the Photocatalytic Performance of TiO2 Film Fabricated by Room Temperature Powder Spray in Vacuum Process |
| Kun-Young Kim, Jung-Ho Ryu, Byung-Dong Hahn, Jong-Jin Choi, Woon-Ha Yoon, Byoung-Kuk Lee, Dong-Soo Park, Chan Park1 |
Functional Ceramics Research Group, Korea Institute of Materials Science (KIMS)
1Division of Materials Science and Engineering, Pukyong National University
2 ㉦≽ Ȁ 왦≽ Ā |
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| ABSTRACT |
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$TiO_2$ is an environment-friendly semiconducting material, and it has photocatalytic and hydrophilic effect. There are a lot of reports on the photocatalytic characteristics of $TiO_2$, such as organic pollutants resolving, anti-bacterial, and self-purification material. In this paper, $TiO_2$ micron-sized powders were deposited on the glass by room temperature powder spray in vacuum process, so called aerosol deposition (AD), and nano-grained $TiO_2$ photocatalytic thin films were fabricated. The thickness of the films were controlled by changing the number of deposition cycle. Morphologies and characteristics of the AD-$TiO_2$ thin films were examined by SEM, TEM, XRD, and UV-Visible Spectrophotometer. As the thickness of $TiO_2$ films increased, surface roughness increased. By this increment, the reaction area between film and pollutant was enlarged, resulting in better photocatalytic property. |
| Key words:
Photocatalyst, $TiO_2$, Film, Aerosol deposition, RTPSV process |
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