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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Electronic band structure and photocatalytic activity of Ln(2)Ti(2)O(7) (Ln = La, Pr, Nd)

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dc.contributor.author Hwang, Dong Won ko
dc.contributor.author Lee, Jae Sung ko
dc.contributor.author Li, Wei ko
dc.contributor.author Oh, Se Hyuk ko
dc.date.available 2015-07-24T01:49:41Z -
dc.date.created 2015-07-24 ko
dc.date.issued 2003-05 -
dc.identifier.citation JOURNAL OF PHYSICAL CHEMISTRY B, v.107, no.21, pp.4963 - 4970 ko
dc.identifier.issn 1520-6106 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/12527 -
dc.identifier.uri http://pubs.acs.org/doi/abs/10.1021/jp034229n ko
dc.description.abstract Photocatalytic activity in the water splitting of Ln(2)Ti(2)O(7) (Ln = La, Pr, Nd) with a layered structure was highly dependent on their electronic band structure. The conduction band of La2Ti2O7 consisted mainly of Ti 3d and La 5d, whereas the valence band consisted mainly of O 2p and Ti 3d. The empty La 4f level was found to be located ca. 3.6 eV above the bottom of the conduction band from both the electronic band-structure calculation and the XPS measurement. The occupied and unoccupied Ln 4f level in Ln(2)Ti(2)O(7) was shifted to lower energy as the number of 4f electrons increased. This shift of the Ln 4f band made it possible for the band-gap energy of both Pr2Ti2O7 and Nd2Ti2O7 to be decreased. For Nd2Ti2O7, the unoccupied Nd 4f level located between the conduction band and the valence band was found to be detrimental to photocatalytic activity in water splitting because it could act as an electron-trapping site ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher AMER CHEMICAL SOC ko
dc.subject WATER ko
dc.subject DECOMPOSITION ko
dc.subject H-2 ko
dc.subject O-2 ko
dc.title Electronic band structure and photocatalytic activity of Ln(2)Ti(2)O(7) (Ln = La, Pr, Nd) ko
dc.title.alternative Electronic band structure and photocatalytic activity of Ln(2)Ti(2)O(7) (Ln = La, Pr, Nd) ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-0037566285 ko
dc.identifier.wosid 000183066000011 ko
dc.type.rims ART ko
dc.description.wostc 120 *
dc.description.scopustc 124 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1021/jp034229n ko
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