Role of valency ordering on the visible light photocatalytic activity of BaBi0.53+Bi0.55+O3
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| Název: | Role of valency ordering on the visible light photocatalytic activity of BaBi0.53+Bi0.55+O3 |
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| Autoři: | Lakshminarasimhan, N, Park, Y, Choi, WY |
| Přispěvatelé: | 환경공학부, Choi, WY |
| Zdroj: | Chemical Physics Letters. 452:264-268 |
| Informace o vydavateli: | Elsevier BV, 2008. |
| Rok vydání: | 2008 |
| Témata: | DECOMPOSITION, ENVIRONMENTAL APPLICATIONS, PHOTOELECTROLYSIS, WATER, SEMICONDUCTOR, BABIO3, BISMUTH, DEGRADATION, OXIDES, 01 natural sciences, 7. Clean energy, IRRADIATION, 0104 chemical sciences |
| Popis: | BaBi0.53+Bi0.55+O3 (BBO) with an ordered arrangement of Bi3+ and Bi5+ in the crystal lattice was studied for its photocatalytic activity with a view to understand the role of valency ordering. The visible light photocatalytic activity of BBO towards 4-chlorophenol degradation decreased with La3+ substitution. The calculated density of states of BBO showed a decrease in the valence band width with La3+ substitution. The valency ordering of Bi3+ and Bi5+ and the concomitant charge transfer between them are vital in the photocatalytic activity of BBO. La3+ substitution in the lattice reduces the photocatalytic activity by hindering the charge transfer process. |
| Druh dokumentu: | Article |
| Jazyk: | English |
| ISSN: | 0009-2614 |
| DOI: | 10.1016/j.cplett.2007.12.050 |
| Přístupová URL adresa: | http://ui.adsabs.harvard.edu/abs/2008CPL...452..264L/abstract http://www.sciencedirect.com/science/article/pii/S000926140701723X https://www.sciencedirect.com/science/article/pii/S000926140701723X |
| Rights: | Elsevier TDM |
| Přístupové číslo: | edsair.doi.dedup.....476fef09281e2c10c99bce19d934a75b |
| Databáze: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstrakt: | BaBi0.53+Bi0.55+O3 (BBO) with an ordered arrangement of Bi3+ and Bi5+ in the crystal lattice was studied for its photocatalytic activity with a view to understand the role of valency ordering. The visible light photocatalytic activity of BBO towards 4-chlorophenol degradation decreased with La3+ substitution. The calculated density of states of BBO showed a decrease in the valence band width with La3+ substitution. The valency ordering of Bi3+ and Bi5+ and the concomitant charge transfer between them are vital in the photocatalytic activity of BBO. La3+ substitution in the lattice reduces the photocatalytic activity by hindering the charge transfer process. |
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| ISSN: | 00092614 |
| DOI: | 10.1016/j.cplett.2007.12.050 |