| 학회 |
한국화학공학회 |
| 학술대회 |
2003년 가을 (10/24 ~ 10/25, 한양대학교) |
| 권호 |
9권 2호, p.2887 |
| 발표분야 |
촉매/반응공학 |
| 제목 |
Photocatalytic water splitting using Strontium niobium oxynitride under visible light irradiation |
| 초록 |
Direct water splitting into H2 and O2 over bulk-type Tantalum Oxynitride (TaON) under visible light irradiation was investigated. In this study, we found that the layered-structure-perovskite-type Strontium niobium oxynitride (Sr2Nb2O7-xNx) has the activity of photocatalic water splitting under visible light irradiation. Sr2Nb2O7 was reported as the photocatalyst for water splitting under UV light irradiation. Sr2Nb2O7-xNx was synthesized from a Sr2Nb2O7 precursor at 1123 K under NH3 flow. We found that the top of the valence band of Sr2Nb2O7-xNx consists predominantly of N 2P orbitals with a small contribution by O 2P orbitals, and has a smaller band-gap than Sr2Nb2O7 by the shifting of the top of the valence band. |
| 저자 |
지상민, 김현규, 장점석, 배상원, 이재성
|
| 소속 |
포항공과대 |
| 키워드 |
oxynitride;photocatalyst;hydrogen;visible;water |
| E-Mail |
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| 원문파일 |
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