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http://dx.doi.org/10.5012/bkcs.2010.31.7.1941

Visible-light Photocatalytic Activity of BiOCl/Bi3O4Cl Nanocomposites  

Gao, Bifen (Department of Chemistry, Inha University)
Chakraborty, Ashok Kumar (Department of Chemistry, Inha University)
Yang, Ji-Min (Indian Springs School)
Lee, Wan-In (Department of Chemistry, Inha University)
Publication Information
Bulletin of the Korean Chemical Society / v.31, no.7, 2010 , pp. 1941-1944 More about this Journal
Abstract
The heterojunction structures of BiOCl/$Bi_3O_4Cl$, 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 (${\lambda}\geq$420 nm) irradiation, BiOCl/$Bi_3O_4Cl$ 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 $Bi_3O_4Cl$ showed negligible activities. It is deduced that the remarkable visible-light photocatalytic activity of the BiOCl/$Bi_3O_4Cl$ originates from the hole $(h^+)$ transfer between VB of the $Bi_3O_4Cl$ and BiOCl semiconductors.
Keywords
Photocatalyst; Visible light; BiOCl; $Bi_3O_4Cl$; Heterojunction;
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