| 학회 |
한국화학공학회 |
| 학술대회 |
2006년 봄 (04/20 ~ 04/21, 대구 인터불고 호텔) |
| 권호 |
12권 1호, p.759 |
| 발표분야 |
에너지/환경 |
| 제목 |
Ta and Nb-based perovskite oxynitrides : Synthesis and Characterizations |
| 초록 |
Photocatalytic Hydrogen and Oxyngen Production from water is the most ideal and powerful method for utilizing solar energy as a newable energy source. Until now on, many UV-light-driven photocatalysts; such as titanates, niobates, tantalates, have been developed. However, for a practical utilization of solar energy, Visible-light-driven photocatalysts must be developed. Nitrogen-doping (substitution) reported recently is a method of band engineering to reduce band gap energy for absorbing visible light. Oxide-based materials (UV-light-driven photocatalysts) can be transformed to (oxy)nitrides through (oxy)nitridation with thermal ammonolysis. Here we reported that Ta- and Nb-based perovskite oxynitrides could be synthesized from oxide precursor by oxynitridation with dry ammonia (gas phase). Prepared Ta- and Nb-based oxynitrides functioned as photocatalyst for water reduction and oxidation under visible light irradiation. |
| 저자 |
지상민, 장점석, 배상원, 홍석준, 전휘찬, P. H. Borse, 이재성
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| 소속 |
포항공과대 |
| 키워드 |
Perovskite; Oxynitride; Photocatalyst; Ammonolysis
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| E-Mail |
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| 원문파일 |
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