Novel g-C3N4wrapped γ-Al2O3 microspheres heterojunction for efficient photocatalytic application under visible light irradiation

Novel g-C3N4wrapped γ-Al2O3 microspheres heterojunction for efficient photocatalytic application... The novel g-C3N4 wrapped γ-Al2O3 microspheres heterojunction was successfully prepared by a simple hydrothermal process followed by calcination. The photocatalytic performances of the composite were evaluated by the degradation of methyl orange (MO) and rhodamine B (RhB) under visible light irradiation. The obtained Al2O3/g-C3N4 heterojunction exhibited much higher photocatalytic activity compared to pure g-C3N4. The enhanced performance may be mainly attributed to the tight contact between the components of the heterostructure as well as the efficient transfer of photoinduced electrons from the valence band (VB) of g-C3N4 to the defect sites of γ-Al2O3. The trapping experiment results indicated that the ·O2 − radicals and holes (h+) are main active species in the decomposition of MO. This work will provide new ideas for manipulation of high-performance heterojunction for practical photocatalysis applications in water pollution controls. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science: Materials in Electronics Springer Journals

Novel g-C3N4wrapped γ-Al2O3 microspheres heterojunction for efficient photocatalytic application under visible light irradiation

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Materials Science; Optical and Electronic Materials; Characterization and Evaluation of Materials
ISSN
0957-4522
eISSN
1573-482X
D.O.I.
10.1007/s10854-017-8399-8
Publisher site
See Article on Publisher Site

Abstract

The novel g-C3N4 wrapped γ-Al2O3 microspheres heterojunction was successfully prepared by a simple hydrothermal process followed by calcination. The photocatalytic performances of the composite were evaluated by the degradation of methyl orange (MO) and rhodamine B (RhB) under visible light irradiation. The obtained Al2O3/g-C3N4 heterojunction exhibited much higher photocatalytic activity compared to pure g-C3N4. The enhanced performance may be mainly attributed to the tight contact between the components of the heterostructure as well as the efficient transfer of photoinduced electrons from the valence band (VB) of g-C3N4 to the defect sites of γ-Al2O3. The trapping experiment results indicated that the ·O2 − radicals and holes (h+) are main active species in the decomposition of MO. This work will provide new ideas for manipulation of high-performance heterojunction for practical photocatalysis applications in water pollution controls.

Journal

Journal of Materials Science: Materials in ElectronicsSpringer Journals

Published: Dec 9, 2017

References

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