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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 11
BKCSDE 30(11)
November 20, 2009

Title	Heterojunction of FeOOH and TiO₂ for the Formation of Visible Light Photocatalyst
Author	Sher Bahadur Rawal, Ashok Kumar Chakraborty, Wan In Lee*
Keywords	Heterojunction, Photocatalyst, Visible light, FeOOH/TiO₂, FeOOH
Abstract	FeOOH/TiO₂, a heterojunction structure between FeOOH and TiO₂, was prepared by covering the surface of the ~100-nm-sized FeOOH particles with Degussa P25 by applying maleic acid as an organic linker. Under visible light irradiation (λ ≥ 420 nm), FeOOH/TiO₂ showed a notable photocatalytic activity in removal of gaseous 2-propanol and evolution of CO₂. It was found that FeOOH reveals a profound absorption in the spectral range of 400 - 550 nm, and its valence band (VB) level is located relatively lower than that of TiO₂. The considerable photocatalytic efficiency of the FeOOH/TiO₂ under visible light irradiation was therefore deduced to be caused by the hole transfer between the VB of FeOOH and TiO₂.
Page	2613 - 2616
Full Text	PDF

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