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Visible-light-responsive photocatalysts xBiOBr–(1−x)BiOI

Paper ID Volume ID Publish Year Pages File Format Full-Text
52362 46872 2008 5 PDF Available
Title
Visible-light-responsive photocatalysts xBiOBr–(1−x)BiOI
Abstract

A new class of oxyhalide photocatalysts xBiOBr–(1−x)BiOI prepared by a soft chemical method were characterized by X-ray diffraction and UV–Vis diffuse reflectance spectra. They are all visible-light-responsive materials with the bandgaps ranging from 1.92 to 2.91 eV. Methyl orange (MO) photocatalytic degradation experiments showed that BiOBr possessed a higher photocatalytic activity than P25 (TiO2) under UV illumination and iodine-modified BiOBr exhibited high photocatlytic activities under visible-light irradiation. The high photocatalytic activity is in close relation with the deep valance band edge position and the internal electric fields between [Bi2O2] slabs and halogen anionic slabs.

Keywords
Photocatalysis; Oxyhalide; Methyl orange
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Visible-light-responsive photocatalysts xBiOBr–(1−x)BiOI
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 1, January 2008, Pages 8–12
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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