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Journal of Materials Science: Materials in Electronics

Published in:

09-02-2017

Preparation and photocatalytic properties of hexagonal-shaped ZnO:Sm³⁺ by microwave-assisted hydrothermal method

Authors: R. G. Carvalho, M. T. S. Tavares, F. K. F. Oliveira, R. M. Nascimento, E. Longo, M. S. Li, C. A. Paskocimas, M. R. D. Bomio, F. V. Motta

Published in: Journal of Materials Science: Materials in Electronics | Issue 11/2017

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Abstract

Novel 3D rods ZnO:Sm monophasic microcrystals have been synthesized by the microwave-assisted hydrothermal (MAH) method at 140 °C for 10 min. The experimental results revealed that concentration of samarium have a significant influence on the band gap and photocatalysis. On the other hand, the samarium in the ZnO semiconductor structure increases photodegradation activity. ZnO sample doped with 8% Sm³⁺ exhibited the best activity in the photodegradation of methylene blue dye when compared to that doped with 0–4 mol%. Enhanced photocatalytic activity was attributed to samarium, which inhibits the recombination of electron–hole pairs.

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Title: Preparation and photocatalytic properties of hexagonal-shaped ZnO:Sm3+ by microwave-assisted hydrothermal method
Authors: R. G. Carvalho
M. T. S. Tavares
F. K. F. Oliveira
R. M. Nascimento
E. Longo
M. S. Li
C. A. Paskocimas
M. R. D. Bomio
F. V. Motta
Publication date: 09-02-2017
Publisher: Springer US
Published in: Journal of Materials Science: Materials in Electronics / Issue 11/2017
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI: https://doi.org/10.1007/s10854-017-6496-3

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