스텐레스강 평직망을 지지체로 한 TiO₂ 광촉매 제조 및 분해성능 = Preparation of TiO₂ Photocatalyst Supported on Stainless Steel Wire Cloth and Its Performance for Decomposition

국문 초록 (Abstract)

본 연구에서는 스텐레스강 평직망(SSWC)을 고온산화법, 습식산화법 그리고 sanding법으로 전처리한 후에 sol-gel법과 AIP (Arc Ion Plating)법으로 이산화티타늄(TiO₂) 광촉매를 코팅하였다. 질소가스 흡착, 주사전자현미경과, 그리고 X-선회절분석기를 통해 물리적 특성을 분석하고, 폐쇄계 순환 반응기를 이용하여 에틸렌과 아세트알데히드에 대한 광분해 활성을 조사하였다. 이 결과 고온산화법으로 800℃에서 12hr 전처리한 SSWC가 TiO₂ 코팅을 위한 최적의 표면상태를 보여주었으며, 에틸렌에 대한 광분해 활성도 가장 높았다. 또한 AIP법 보다 sol-gel법이 높은 에틸렌의 광분해 활성을 보여주었으며, 그리고 sol-gel법으로 제조된 TiO₂/SSWC 광촉매는 SSWC가 32mesh, TiO₂ 담지회수는 2회가 광분해 활성이 가장 우수함을 보였다.

다국어 초록 (Multilingual Abstract)

In this study, TiO₂ photocatalyst supported on stainless steel wire cloth (SSWC), which were pretreated with high thermal oxidation, wet oxidation, and sanding, prepared by sol-gel and AIP (Arc Ion Plating) methods. These catalysts were characterized by N₂ gas adsorption, scanning electron microscopy (SEM), and X-ray diffraction (XRD). Also, decomposition of ethylene and acetaldehyde were investigated by atmospheric closed system circulating reactor. As a results, optimum condition for TiO₂ support on SSWC was obtained by high thermal oxidation at 800℃ for 12hr. Also, catalytic activity of TiO₂/SSWC catalyst prepared by sol-gel method was higher than AIP method in ethylene oxidation, and acetaldelyde was easier oxidized than ethylene. Furthermore, among the TiO₂/SSWC catalysts prepared by sol-gel method, the maximum catalytic activity for ethylene oxidation was obtained over 32mesh SSWC, and the optimum loading number was 2 times.