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    Enhanced visible-light activity of titania via confinement inside carbon nanotubes

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    Type
    Article
    Authors
    Chen, Wei
    Fan, Zhongli
    Zhang, Bei
    Ma, Guijun
    Takanabe, Kazuhiro cc
    Zhang, Xixiang cc
    Lai, Zhiping cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Advanced Nanofabrication, Imaging and Characterization Core Lab
    Biological and Environmental Sciences and Engineering (BESE) Division
    Catalysis for Energy Conversion (CatEC)
    Chemical Engineering Program
    Chemical Science Program
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Core Labs
    Extreme Computing Research Center
    Imaging and Characterization Core Lab
    KAUST Catalysis Center (KCC)
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2011-09-28
    Permanent link to this record
    http://hdl.handle.net/10754/561881
    
    Metadata
    Show full item record
    Abstract
    Titania confined inside carbon nanotubes (CNTs) was synthesized using a restrained hydrolysis method. Raman spectra and magnetic measurements using a SQUID magnetometer suggested the formation of remarkable oxygen vacancies over the encapsulated TiO 2 in comparison with nanoparticles dispersed on the outer surface of CNTs, extending the photoresponse of TiO 2 from the UV to the visible-light region. The CNT-confined TiO 2 exhibited improved visible-light activity in the degradation of methylene blue (MB) relative to the outside titania and commercial P25, which is attributed to the modification of the electronic structure of TiO 2 induced by the unique confinement inside CNTs. These results provide further insight into the effect of confinement within CNTs, and the composites are expected to be promising for applications in visible-light photocatalysis. © 2011 American Chemical Society.
    Citation
    Chen, W., Fan, Z., Zhang, B., Ma, G., Takanabe, K., Zhang, X., & Lai, Z. (2011). Enhanced Visible-Light Activity of Titania via Confinement inside Carbon Nanotubes. Journal of the American Chemical Society, 133(38), 14896–14899. doi:10.1021/ja205997x
    Sponsors
    We thank Dr. Y. Yang, Q. Wang, and X. Liu from King Abdullah University of Science and Technology (KAUST) for their help with Raman spectroscopy, TEM, and drawing, respectively. We also acknowledge the faculty distribution fund of KAUST.
    Publisher
    American Chemical Society (ACS)
    Journal
    Journal of the American Chemical Society
    DOI
    10.1021/ja205997x
    PubMed ID
    21894970
    ae974a485f413a2113503eed53cd6c53
    10.1021/ja205997x
    Scopus Count
    Collections
    Articles; Biological and Environmental Science and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Extreme Computing Research Center; Chemical Science Program; Chemical Engineering Program; Material Science and Engineering Program; KAUST Catalysis Center (KCC); Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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