Photocatalytic activity of flower-like ZnO derived by a d-glucose-assisted sonochemical method

Photocatalytic activity of flower-like ZnO derived by a d-glucose-assisted sonochemical method This work reports the preparation of flower-like ZnO for applications in the catalytic oxidation of methyl orange (MO) in aqueous solution. The wurtzite ZnO samples with flower-like morphologies were obtained via a d-glucose-assisted sonochemical method. Effects of the presence of glucose, sonication times (0, 10, and 20 min) and calcination temperatures (300, 400, and 500 °C) on the morphology of the catalysts were investigated. Results from this work suggest that d-glucose played an important role in the formation of flower-like morphologies and the sonication processes further enhanced the flower-like characteristic ordering. The majority of ZnO samples prepared in this work had rather high photocatalytic activity after 45 min, with MO degradation greater than 85 % of the initial concentration. These results suggest that the photocatalytic activity of ZnO after 45-min reaction time correlates well with the specific surface area, and the number of oxygen vacancies present in the materials. The solubility of flower-like ZnO samples in the dye solution was measured to be 19.2 ppb after 24-h reaction time. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Research on Chemical Intermediates Springer Journals

Photocatalytic activity of flower-like ZnO derived by a d-glucose-assisted sonochemical method

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Publisher
Springer Netherlands
Copyright
Copyright © 2012 by Springer Science+Business Media B.V.
Subject
Chemistry; Catalysis; Physical Chemistry; Inorganic Chemistry
ISSN
0922-6168
eISSN
1568-5675
D.O.I.
10.1007/s11164-012-0619-5
Publisher site
See Article on Publisher Site

Abstract

This work reports the preparation of flower-like ZnO for applications in the catalytic oxidation of methyl orange (MO) in aqueous solution. The wurtzite ZnO samples with flower-like morphologies were obtained via a d-glucose-assisted sonochemical method. Effects of the presence of glucose, sonication times (0, 10, and 20 min) and calcination temperatures (300, 400, and 500 °C) on the morphology of the catalysts were investigated. Results from this work suggest that d-glucose played an important role in the formation of flower-like morphologies and the sonication processes further enhanced the flower-like characteristic ordering. The majority of ZnO samples prepared in this work had rather high photocatalytic activity after 45 min, with MO degradation greater than 85 % of the initial concentration. These results suggest that the photocatalytic activity of ZnO after 45-min reaction time correlates well with the specific surface area, and the number of oxygen vacancies present in the materials. The solubility of flower-like ZnO samples in the dye solution was measured to be 19.2 ppb after 24-h reaction time.

Journal

Research on Chemical IntermediatesSpringer Journals

Published: Jun 19, 2012

References

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