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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 7
BKCSDE 31(7)
July 20, 2010 

Visible-light Photocatalytic Activity of BiOCl/Bi3O4Cl Nanocomposites
Bifen Gao, Ashok Kumar Chakraborty, Ji Min Yang, Wan In Lee*
Photocatalyst, Visible light, BiOCl, Bi3O4Cl, Heterojunction
The heterojunction structures of BiOCl/Bi3O4Cl, exhibiting considerable visible-light photocatalytic efficiency, were prepared by a simple wet-chemical process at ambient condition. The prepared nanocomposites were characterized by XRD, TEM, and UV-visible diffuse reflectance spectra. Under visible light (λ ≥ 420 nm) irradiation, BiOCl/Bi3O4Cl exhibited an enhanced photocatalytic activity in decomposing 2-propanol (IP) in gas phase and salicylic acid (SA) in aqueous solution, whereas the bare BiOCl and Bi3O4Cl showed negligible activities. It is deduced that the remarkable visible-light photocatalytic activity of the BiOCl/Bi3O4Cl originates from the hole (h+) transfer between VB of the Bi3O4Cl and BiOCl semiconductors.
1941 - 1944
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