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Received November 30, 2018
Accepted February 11, 2019
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Photoluminescence and photocatalytic properties of Eu3+-doped CaZnTiO3 perovskites with metal ion loading
Department of Food and Nutrition, Kwangju Women’s University, 165 Sanjung-dong, Gwangju 62396, Korea
bgpark814@naver.com
Korean Journal of Chemical Engineering, April 2019, 36(4), 613-619(7), 10.1007/s11814-019-0242-x
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Abstract
Europium (Eu3+)-doped CaZnTiO3 perovskite phosphors were synthesized using a sol-gel reaction method. Different solvent materials were introduced to the synthesis process to produce higher emitting phosphors. Eu3+-doped CaZnTiO3 perovskite synthesized using an ethanol mixture solvent exhibited higher photoluminescence intensities for red emission than those synthesized using distilled water as a solvent. The synthesized Eu3+-doped CaZnTiO3 perovskites were characterized by photo-physical analysis and tested for the photocatalytic degradation of toluene. Ru, Co, and Ni ions were loaded on the perovskites to improve photocatalytic activity. Ni ion-loaded CaZnTiO3 : Eu3+ perovskite showed enhanced red emission and higher photocatalytic activities compared to those of bare CaZnTiO3 : Eu3+ perovskite. The improvement of the photocatalytic degradation of toluene was attributed to the lower bandgap of Ni ion-loaded CaZnTiO3 : Eu3+ perovskite, as determined by UV-visible diffuse reflectance spectroscopy.
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