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Heterostructured visible-light-active photocatalyst of chromia- nanoparticle-layered titanate

Title
Heterostructured visible-light-active photocatalyst of chromia- nanoparticle-layered titanate
Authors
Kim T.W.Hur S.G.Hwang S.-J.Park H.Choi W.Choy J.-H.
Ewha Authors
최진호황성주
SCOPUS Author ID
최진호scopus; 황성주scopus
Issue Date
2007
Journal Title
Advanced Functional Materials
ISSN
1616-301XJCR Link
Citation
vol. 17, no. 2, pp. 307 - 314
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
An efficient visible-light active photocatalyst of porous CrO x-Ti1.83O4 nanohybrid with a 1:1 type ordered heterostructure is synthesized through a hybridization between a chromia cluster and exfoliated titanate nanosheets. The present nanohybrids are found to have a large surface area (ca. 250-310 m2 g-1) and an intense absorption of visible light, ascribable, respectively, to the formation of a porous structure and the hybridization of titanate with narrow-bandgap chromium oxide. After the calcination at 400°C, the nanohybrid shows an enhanced photocatalytic activity to effectively decompose organic compounds under the irradiation of visible light (λ > 420 nm). The present study highlights the exfoliation-restacking route as a very powerful way to develop efficient visible-light-harvesting photocatalysts with excellent thermal stability. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.
DOI
10.1002/adfm.200600022
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자연과학대학 > 화학·나노과학전공 > Journal papers
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