Investigation of visible light photocatalytic behavior of Bi{sub 4}V{sub 2}O{sub 11-{delta}} and BIMEVOX (ME = Al, Ga) oxides

Journal Article · Wed Sep 15 04:00:00 UTC 2010 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2010.05.007· OSTI ID:22207383

Thakral, Vaishali ^[1]

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1. Materials Chemistry Group, Department of Chemistry, University of Delhi, Delhi 110007 (India)

A study of photocatalytic properties of Bi{sub 4}V{sub 2}O{sub 11-{delta}} for the degradation of common organic dyes such as methylene blue (MB) under visible light was carried out. Other identified bismuth based visible light photocatalysts such as Bi{sub 2}GaVO{sub 7}, Bi{sub 2}YVO{sub 8} and Bi{sub 2}AlVO{sub 7} were reinvestigated to understand their structural, and photocatalytic properties. Our experiments involving the synthesis of Bi{sub 2}YVO{sub 8} indicated merely a mixture of BiYO{sub 3} and BiVO{sub 4}, instead of the reported oxide containing bismuth in +3 and +5 oxidation states (J. Luan, et al., Mater. Res. Bull. 43 (2008) 3332). We have further shown the similarity of Bi{sub 2}AlVO{sub 7} and Bi{sub 2}GaVO{sub 7} photocatalysts with that of the metal ions substituted Bi{sub 4}V{sub 2}O{sub 11-{delta}} (BIMEVOX; ME = Al, Ga) based on the results of powder X-ray diffraction, UV-vis diffuse reflectance and photocatalytic studies. In general, photocatalytic behavior of Bi{sub 4}V{sub 2}O{sub 11-{delta}} and Bi{sub 4}V{sub 2-x}M{sub x}O{sub 11-{delta}} (M = Al, Ga; x = 0.4) were found to be moderate for the decomposition of MB under visible light irradiation.

• OSTI ID: 22207383
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 9 Vol. 45; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH
DECOMPOSITION
IRRADIATION
MIXTURES
OPTICAL PROPERTIES
PHOTOCATALYSIS
POWDERS
X-RAY DIFFRACTION