Heterostructured visible-light-active photocatalyst of chromia-nanoparticle-layered titanate
SCIE
SCOPUS
- Title
- Heterostructured visible-light-active photocatalyst of chromia-nanoparticle-layered titanate
- Authors
- Kim, TW; Hur, SG; Hwang, SJ; Park, H; Choi, W; Choy, JH
- Date Issued
- 2007-01-22
- Publisher
- WILEY-V C H VERLAG GMBH
- Abstract
- An efficient visible-light active photocatalyst of porous CrOx-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 m(2) 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 degrees C, the nanohybrid shows an enhanced photocatalytic activity to effectively decompose organic compounds under the irradiation of visible light (lambda > 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.
- Keywords
- RAY-ABSORPTION SPECTROSCOPY; SEMICONDUCTOR PHOTOCATALYSIS; TITANIUM-DIOXIDE; SURFACE-AREA; OXIDE; TIO2; NANOSHEETS; INTERCALATION; TETRATITANATE; EXFOLIATION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23565
- DOI
- 10.1002/adfm.200600022
- ISSN
- 1616-301X
- Article Type
- Article
- Citation
- ADVANCED FUNCTIONAL MATERIALS, vol. 17, no. 2, page. 307 - 314, 2007-01-22
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