Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김성진 | * |
dc.contributor.author | 최진호 | * |
dc.contributor.author | 황성주 | * |
dc.date.accessioned | 2016-08-28T11:08:55Z | - |
dc.date.available | 2016-08-28T11:08:55Z | - |
dc.date.issued | 2005 | * |
dc.identifier.issn | 1520-6106 | * |
dc.identifier.other | OAK-2862 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/219600 | - |
dc.description.abstract | We have synthesized new, efficient, visible light active photocatalysts through the incorporation of highly electronegative non-transition metal Pb or Sn ions into the perovskite lattice of Ba(In1/3M 1/3M′1/3)O3 (M = Sn, Pb; M′ = Nb, Ta). X-ray diffraction, X-ray absorption spectroscopic, and energy dispersive spectroscopic microprobe analyses reveal that tetravalent Pb or Sn ions exist in the B-site of the perovskite lattice, along with In and Nb/Ta ions. According to diffuse UV-vis spectroscopic analysis, the Pb-containing quaternary metal oxides Ba(In1/3Pb1/3M′1/3)O3 possess a much narrower band gap (Eg ∼ 1.48-1.50 eV) when compared to the ternary oxides Ba(In1/2M′1/2)O 3 (Eg ∼ 2.97-3.30 eV) and the Sn-containing Ba(In 1/3Sn1/3M′1/3)O3 derivatives (Eg ∼ 2.85-3.00 eV). Such a variation of band gap energy upon the substitution is attributable to the broadening of the conduction band caused by the dissimilar electronegativities of the B-site cations. In contrast to the ternary or the Sn-substituted quaternary compounds showing photocatalytic activity under UV-vis irradiation, the Ba(In1/3Pb 1/3M′1/3)O3 compounds induce an efficient photodegradation of 4-chlorophenol under visible light irradiation (λ > 420 nm). The present results highlight that the substitution of electronegative non-transition metal cations can provide a very powerful way of developing efficient visible light harvesting photocatalysts through tuning of the band structure of a semiconductive metal oxide. © 2005 American Chemical Society. | * |
dc.language | English | * |
dc.title | Synthesis of new visible light active photocatalysts of Ba(In 1/3Pb1/3M′1/3)O3 (M′ = Nb, Ta): A band gap engineering strategy based on electronegativity of a metal component | * |
dc.type | Article | * |
dc.relation.issue | 31 | * |
dc.relation.volume | 109 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 15001 | * |
dc.relation.lastpage | 15007 | * |
dc.relation.journaltitle | Journal of Physical Chemistry B | * |
dc.identifier.doi | 10.1021/jp051752o | * |
dc.identifier.wosid | WOS:000231042800037 | * |
dc.identifier.scopusid | 2-s2.0-23844467517 | * |
dc.author.google | Hur S.G. | * |
dc.author.google | Kim T.W. | * |
dc.author.google | Hwang S.-J. | * |
dc.author.google | Park H. | * |
dc.author.google | Choi W. | * |
dc.author.google | Kim S.J. | * |
dc.author.google | Choy J.-H. | * |
dc.contributor.scopusid | 김성진(56812714700) | * |
dc.contributor.scopusid | 최진호(8044393000) | * |
dc.contributor.scopusid | 황성주(7404626171) | * |
dc.date.modifydate | 20240301081003 | * |