Journal
JOURNAL OF RARE EARTHS
Volume 39, Issue 10, Pages 1211-1216Publisher
ELSEVIER
DOI: 10.1016/j.jre.2020.11.005
Keywords
Dy-doped CeVO4 nanorods; Photocatalysis; Spectroscopy; Radical trapping test; Photocatalytic stability test; Rare earths
Categories
Funding
- Center of Excellence in Materials Science and Technology, Chiang Mai University
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Pure CeVO4 and Dy-doped CeVO4 nanorods were synthesized and their photodegradation efficiency on dyes was studied. It was found that Dy dopant can enhance the degradation performance of nanorods under UV light irradiation.
Pure CeVO4 and Dy-doped CeVO4 nanorods containing different weight contents of Dy dopant were synthesized by hydrothermal method. Effect of Dy dopant on photodegradation of methylene blue (MB) and rhodamine B (RhB) was evaluated under UV light irradiation within 80 min. Pure CeVO4 and Dydoped CeVO4 nanorods were characterized by X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM) and UV-visible spectroscopy. In this research, CeVO4 nanorods are tetragonal phase with the detection of main peak shift after being doped with Dy. The length of nanorods is deceased from 50 to 200 nm for pure CeVO4 to 50-100 nm for 3% Dy-doped CeVO4. Photodegradation of MB and RhB by CeVO4 nanorods under UV light irradiation is improved by Dy-dopant that plays the role in accepting electrons and reducing electron-hole recombination. MB and RhB solutions degraded by 3% Dy-doped CeVO4 nanorods was 94% and 93% within 80 min, respectively. (C) 2020 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.
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