| 학회 | 한국화학공학회 |
| 학술대회 | 2009년 가을 (10/22 ~ 10/23, 일산 KINTEX) |
| 권호 | 15권 2호, p.2467 |
| 발표분야 | 나노구조 촉매 심포지엄 |
| 제목 | Solar Water Splitting using Powdered Photocatalysts |
| 초록 | In the present paper, we introduce various photocatalyst materials aiming at water splitting [1].A NiO (0.2wt%)/NaTaO3:La (2%) photocatalyst showed high activity for water splitting into H2 and O2. Many visible-light-driven photocatalysts have also been developed through band engineering by doping of metal cations, new valence formation, and by making solid solution. BiVO4, AgNbO3, and TiO2 co-doped with Rh and Sb photocatalysts showed high activities for O2 evolution in the presence of sacrificial reagent (Ag+) under visible light irradiation. Pt/SrTiO3 doped with Rh showed high activity for H2 evolution from aqueous solutions containing a reducing reagent. Overall water splitting under visible light irradiation has been achieved by construction of a Z-scheme photocatalysis system employing the visible-light-driven photocatalysts, Ru/SrTiO3:Rh for H2 evolution and BiVO4 for O2 evolution, and an Fe3+/ Fe2+ redox couple as an electron relay. On the other hand, AgInS2-CuInS2-ZnS solid solution photocatalysts showed high activity for H2 evolution from aqueous solutions including sulfur compounds as electron donors even under simulated solar light irradiation (AM-1.5). References: [1] A. Kudo and Y. Miseki, Chem. Soc. Rev., 38 [1], 253-278 (2009). |
| 저자 | Akihiko Kudo |
| 소속 | Department of Applied Chemistry |
| 키워드 | photocatalyst; water splitting; solar light irradiation |
| 원문파일 | 초록 보기 |
