| 학회 |
한국화학공학회 |
| 학술대회 |
2007년 가을 (10/26 ~ 10/27, 한국과학기술원) |
| 권호 |
13권 2호, p.2522 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
Photocatalytic decompositon of IPA over W-doped PbBi2Nb2O9 material under visible light irradiation |
| 초록 |
In order to perform the study we designed and fabricated p-type and n-type materials by doping PbBi2Nb2O9. The PBNO is an undoped, single-phase Aurivillius-phase layered perovskite photocatalyst [10], efficient for decomposition of water into O2 or H2 under visible light irradiation (≥420nm). For n-type PBNO we introduced W6+ for Nb5+ in the perovskite lattice by the solid state reaction method. In order to explore the effect of doping concentration, we further varied the W+6 concentration to make PbBi2Nb2-xWxO9 (x = 0.1 - 0.5 mol%, PBNWO). Similarly, we introduced Ti+4 for Nb+5 in the lattice of PBNO to make p-type PbBi2Nb1.85Ti0.15O9 (PBNTO). In addition to the desired valencies, the dopants W+6 and Ti+4 were chosen because of their similar sizes to that of Nb+5. Finally we investigated photocatalytic and photoelectrochemical performance of these materials for photocurrent generation and CO2 production from IPA under visible light irradiation (λ≥420nm). |
| 저자 |
김현규1, 장점석2, 지상민2, 홍석준2, 장지민1, 정의덕1, 이재성2
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| 소속 |
1한국기초과학지원(연), 2포항공과대 |
| 키워드 |
photoelectrochemical; IPA; photocatalysis; solar energy material
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| E-Mail |
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| 원문파일 |
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