These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Multivalency iodine doped TiO2: preparation, characterization, theoretical studies, and visible-light photocatalysis.
    Author: Su W, Zhang Y, Li Z, Wu L, Wang X, Li J, Fu X.
    Journal: Langmuir; 2008 Apr 01; 24(7):3422-8. PubMed ID: 18302421.
    Abstract:
    Multivalency iodine (I(7)+/I(-)) doped TiO(2) were prepared via a combination of deposition-precipitation process and hydrothermal treatment. The as-prepared samples were characterized by X-ray diffraction, transmission electron microscopy, Brunauer-Emmett-Teller surface area, UV-vis diffuse reflectance spectra, X-ray photoelectron spectroscopy, surface photovoltage spectroscopy, and electric-field-induced surface photovoltage spectroscopy. The electronic structure calculations based on the density functional theory revealed that upon doping, new states that originated from the I atom of the IO(4) group are observed near the conduction-band bottom region of TiO(2), and the excitation from the valence band of TiO(2) to the surface IO(4-) is responsible for the visible-light response of the I-doped TiO(2). The as-prepared I-doped TiO(2) showed high efficiency for the photocatalytic decomposition of gaseous acetone under visible light irradiation (lambda > 420 nm). A possible mechanism for the photocatalysis on this multivalency iodine (I(7)+/I(-)) doped TiO(2) under visible light was also proposed.
    [Abstract] [Full Text] [Related] [New Search]