| 학회 | 한국화학공학회 |
| 학술대회 | 2003년 가을 (10/24 ~ 10/25, 한양대학교) |
| 권호 | 9권 2호, p.2457 |
| 발표분야 | 에너지/환경 |
| 제목 | Visible light-activated photocatalyst by oxygen release |
| 초록 | In this study, Ti(SO4)2 solution was mixed with NH3 solution to make visible-light activated photocatalyst, in which oxygen deficient sites would be formed due to the oxidation reaction of adsorbed N-compounds with the oxygen in the lattice during the heat treatment. Oxygen deficient sites were known to play a major role for photocatalyst to absorb visible light to bluish-green 500nm, while the sites also act as a recombination center. Yellowish powder was ground with an agate mortar and characterized by UV/Vis spectroscopy, SEM, XRD and TEM. Absorbance in the range of below 550 nm clearly increased. Particles have a size of ca. 30nm and round shaped. XRD results showed that anatase phase peaked at 2θ = 25.3 were created. Meanwhile, photocatalytic activity of the obtained photocatalyst was compared with commercialized P25 (Degussa) using isopropyl alcohol (IPA) as a probe compound. To be more reasonable and applicable, experiments on activity were performed either varying light sources or reactor systems. |
| 저자 | 신홍대1, 주현규2, 전일수2, 조현승3, 하진욱4, 이창하1 |
| 소속 | 1연세대, 2한국에너지기술(연), 3가야대, 4순천향대 |
| 키워드 | photocatalyst; visible light; |
| 원문파일 | 초록 보기 |
