http://dx.doi.org/10.1016/j.matchemphys.2010.09.013">
 

Document Type

Journal Article

Department/Unit

Department of Chemistry

Title

Preparation, characterization and photocatalytic activity of Bi2O3–MgO composites

Language

English

Abstract

A series of Bi2O3-MgO composites were synthesized by solvent-thermal method. It was found that the Bi2O3-MgO composites perform much better than TiO2 (P25), Bi2O 3 and MgO in the photocatalytic degradation of rhodamine B (RhB) in the presence of HCl and under irradiation of visible light (λ > 400 nm). The effects of Bi/Mg molar ratio, crystallization temperature of Bi 2O3-MgO and reaction conditions on photocatalytic activity were studied. The best performance was observed over the composite with Bi:Mg molar ratio equal to 2:1 that had been subject to crystallization at 120 °C for 20 h. In addition, the photocatalytic efficiency of the composite can be significantly enhanced by the presence of hydrochloric acid. The prepared samples were characterized by XRD and UV-vis DRS techniques. The relationships between the structure and photocatalytic performance of the as-prepared Bi 2O3-MgO samples were also investigated. © 2010 Elsevier B.V. All rights reserved.

Keywords

Bismuth oxide, Magnesium oxide, Photocatalyst, Visible light photodegradation

Publication Date

2011

Source Publication Title

Materials Chemistry and Physics

Volume

125

Issue

2-1

Start Page

236

End Page

241

Publisher

Elsevier

ISSN (print)

02540584

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