| 학회 |
한국화학공학회 |
| 학술대회 |
2004년 가을 (10/29 ~ 10/30, 호서대학교(아산캠퍼스)) |
| 권호 |
10권 2호, p.1903 |
| 발표분야 |
에너지/환경 |
| 제목 |
Novel Photocatalysts for Oxidation and Reduction of Water under Visible Light: Substitution Effect of Lead in Perovskite-Related Layered Oxides |
| 초록 |
The photocatalytic water splitting using sunlight is one of the most promising methods to store solar energy as chemical energy. In search of new highly efficient photocatalysts for water splitting under visible light irradiation, we studied the lead substitution effect in perovskite related layered niobates and titanates in a systematic manner. Our strategy was to shift the photocatalytic activity from UV into the visible light range, by high or complete substitution of cations in UV-active perovskite material with lead ion. We investigated layered perovskite phases of the Aurivillius (Bi2O2)2+(An-1BnO3n+1)2-, Dion-Jacobson M[An-1BnO3n+1] and Ruddlesden-Popper (An+1BnO3n+1) types. We found in all the three structure type examples, that a non-visible light absorbing, non-photocatalytically active lead-free phase can be converted by lead substitution, into a visible light absorbing, visible light photocatalytically active phase. In this communication we report on the importance of lead substituion in obtaining visibly active layered photocatalysts. |
| 저자 |
지상민, 김현규, 장점석, 배상원, 손효창, 이재성
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| 소속 |
포항공과대 |
| 키워드 |
H2; O2; photocatalysts; visible light; perovskite
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| E-Mail |
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| 원문파일 |
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