Synthesis of visible light-active CeO2 sheets via mussel-inspired CaCO3 mineralization

Jong Wan Ko; Jae Hong Kim; Chan Beum Park

doi:10.1039/C2TA00782G

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Synthesis of visible light-active CeO₂ sheets via mussel-inspired CaCO₃ mineralization†

Jong Wan Ko,^a Jae Hong Kim^a and Chan Beum Park*^a

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* Corresponding authors

^a Department of Materials Science and Engineering, KAIST, Science Road 335, Yuseong-gu, Daejeon 305-701, Republic of Korea
E-mail: parkcb@kaist.ac.kr
Fax: +82 42 350 3310
Tel: +82 42 350 3340

Abstract

Visible light-active, nano-grained CeO₂ sheets are successfully synthesized using polydopamine-induced CaCO₃ vaterite microspheres. The nano-grained CeO₂ sheets exhibited a distinct polycrystalline sheet-like structure with grains, with a red-shift in the UV-visible absorption spectrum and a much narrower bandgap (2.71–2.83 eV). Visible light-responsive photocatalytic activity was observed with nano-grained CeO₂ sheets at a rate constant that was much higher than that of CeO₂ nanoparticles.

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Article information

DOI: https://doi.org/10.1039/C2TA00782G
Article type: Communication
Submitted: 13 Sep 2012
Accepted: 29 Oct 2012
First published: 30 Oct 2012

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J. Mater. Chem. A, 2013,1, 241-245

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Synthesis of visible light-active CeO₂ sheets via mussel-inspired CaCO₃ mineralization

J. W. Ko, J. H. Kim and C. B. Park, J. Mater. Chem. A, 2013, 1, 241 DOI: 10.1039/C2TA00782G

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Journal of Materials Chemistry A