Heterostructured Visible‐Light‐Active Photocatalyst of Chromia‐Nanoparticle‐Layered Titanate | Zendy

Kim T. W. | Zendy; Hur S. G. | Zendy; Hwang S.J. | Zendy; Park H. | Zendy; Choi W. | Zendy; Choy J.H. | Zendy

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Heterostructured Visible‐Light‐Active Photocatalyst of Chromia‐Nanoparticle‐Layered Titanate

Author(s) -

Kim T. W.,

Hur S. G.,

Hwang S.J.,

Park H.,

Choi W.,

Choy J.H.

Publication year - 2007

Publication title -

advanced functional materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 6.069

H-Index - 322

eISSN - 1616-3028

pISSN - 1616-301X

DOI - 10.1002/adfm.200600022

Subject(s) - materials science , photocatalysis , visible spectrum , calcination , titanate , chromia , nanoparticle , exfoliation joint , heterojunction , chemical engineering , oxide , nanotechnology , graphene , optoelectronics , composite material , ceramic , catalysis , organic chemistry , chemistry , engineering , metallurgy

An efficient visible‐light active photocatalyst of porous CrO x –Ti 1.83 O 4 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 °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.

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