Photodegradation of aqueous methyl orange on MnTiO3 powder at different initial pH

Photodegradation of aqueous methyl orange on MnTiO3 powder at different initial pH The photodegradation of aqueous methyl orange on MnTiO3 powder was studied in this work. The effects of initial pH and H2O2 on the photodegradation of aqueous methyl orange were studied. Single-phase MnTiO3 powder was synthesized by a sol–gel method. X-ray diffraction analysis shows powders have a particle size of 43.7 nm and rhombohedral pyrophanite structure. The photocatalysis experiments revealed that the efficiency of decolorization of the aqueous methyl orange (1 × 10−5 M) on the MnTiO3 powder is very fast in sunlight. The rate of decolorization appears larger at initial pH 5 and 9 than at pH 7. H2O2 (2%) can remarkably accelerate the decolorization at low initial pH. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Photodegradation of aqueous methyl orange on MnTiO3 powder at different initial pH

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Publisher
Springer Journals
Copyright
Copyright © 2010 by Springer Science+Business Media B.V.
Subject
Chemistry; Inorganic Chemistry ; Physical Chemistry ; Catalysis
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-010-0213-7
Publisher site
See Article on Publisher Site

Abstract

The photodegradation of aqueous methyl orange on MnTiO3 powder was studied in this work. The effects of initial pH and H2O2 on the photodegradation of aqueous methyl orange were studied. Single-phase MnTiO3 powder was synthesized by a sol–gel method. X-ray diffraction analysis shows powders have a particle size of 43.7 nm and rhombohedral pyrophanite structure. The photocatalysis experiments revealed that the efficiency of decolorization of the aqueous methyl orange (1 × 10−5 M) on the MnTiO3 powder is very fast in sunlight. The rate of decolorization appears larger at initial pH 5 and 9 than at pH 7. H2O2 (2%) can remarkably accelerate the decolorization at low initial pH.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Nov 19, 2010

References

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