Synthesis of Gd<sub>2</sub>O<sub>3</sub> Nanoparticles and Their Photocatalytic Activity for Degradation of Azo Dyes

Synthesis of Gd<sub>2</sub>O<sub>3</sub> Nanoparticles and Their Photocatalytic Activity for Degradation of Azo Dyes

Gadolinium oxide (Gd<sub>2</sub>O<sub>3</sub>) nanoparticles were prepared via the reaction of gadolinium nitrate hexahydrate (Gd (NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O) and ethylamine (C<sub>2</sub>H<sub>5</sub&g...

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Main Authors: Sugyeong Jeon, Jeong-Won Ko, Weon-Bae Ko
Format: Article
Language:English
Published: MDPI AG 2021-06-01
Series:Catalysts
Subjects:
gadolinium oxide nanoparticles
photocatalytic activity
azo dyes
kinetics study
Online Access:https://www.mdpi.com/2073-4344/11/6/742
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spelling doaj-ffc4583011e44bf3ab4d690e409fc9bf2021-07-01T00:24:02ZengMDPI AGCatalysts2073-43442021-06-011174274210.3390/catal11060742Synthesis of Gd<sub>2</sub>O<sub>3</sub> Nanoparticles and Their Photocatalytic Activity for Degradation of Azo DyesSugyeong Jeon0Jeong-Won Ko1Weon-Bae Ko2Department of Convergence Science, Graduate School of Sahmyook University, Seoul 01795, KoreaDepartment of Animal Life Resources, Chemistry Major, Sahmyook University, 815 Hwarang-ro, Nowon-gu, Seoul 01795, KoreaDepartment of Convergence Science, Graduate School of Sahmyook University, Seoul 01795, KoreaGadolinium oxide (Gd<sub>2</sub>O<sub>3</sub>) nanoparticles were prepared via the reaction of gadolinium nitrate hexahydrate (Gd (NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O) and ethylamine (C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub>), and their surface morphology, particle size, and properties were examined by using scanning electron microscopy, X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, and ultraviolet visible (UV-vis) spectroscopy. The Gd<sub>2</sub>O<sub>3</sub> nanoparticles were used as the photocatalyst for the degradation of various azo dyes, such as methyl orange (MO), acid orange 7 (AO7), and acid yellow 23 (AY23) under irradiation with UV light. The effect of the experimental parameters (initial concentration of azo dyes, dosage of catalyst, and wavelength of UV light) on the photocatalytic properties of the Gd<sub>2</sub>O<sub>3</sub> nanoparticles were investigated. At a constant H<sub>2</sub>O<sub>2</sub> concentration, the photocatalytic degradation efficiency of the Gd<sub>2</sub>O<sub>3</sub> nanoparticles for various azo dyes was in the order: methyl orange > acid orange 7 > acid yellow 23. The kinetics study showed that the photocatalytic degradation of azo dyes was followed by a pseudo first-order reaction rate law.https://www.mdpi.com/2073-4344/11/6/742gadolinium oxide nanoparticlesphotocatalytic activityazo dyeskinetics study
collection DOAJ
language English
format Article
sources DOAJ
author Sugyeong Jeon
Jeong-Won Ko
Weon-Bae Ko
spellingShingle Sugyeong Jeon
Jeong-Won Ko
Weon-Bae Ko
Synthesis of Gd<sub>2</sub>O<sub>3</sub> Nanoparticles and Their Photocatalytic Activity for Degradation of Azo Dyes
Catalysts
gadolinium oxide nanoparticles
photocatalytic activity
azo dyes
kinetics study
author_facet Sugyeong Jeon
Jeong-Won Ko
Weon-Bae Ko
author_sort Sugyeong Jeon
title Synthesis of Gd<sub>2</sub>O<sub>3</sub> Nanoparticles and Their Photocatalytic Activity for Degradation of Azo Dyes
title_short Synthesis of Gd<sub>2</sub>O<sub>3</sub> Nanoparticles and Their Photocatalytic Activity for Degradation of Azo Dyes
title_full Synthesis of Gd<sub>2</sub>O<sub>3</sub> Nanoparticles and Their Photocatalytic Activity for Degradation of Azo Dyes
title_fullStr Synthesis of Gd<sub>2</sub>O<sub>3</sub> Nanoparticles and Their Photocatalytic Activity for Degradation of Azo Dyes
title_full_unstemmed Synthesis of Gd<sub>2</sub>O<sub>3</sub> Nanoparticles and Their Photocatalytic Activity for Degradation of Azo Dyes
title_sort synthesis of gd<sub>2</sub>o<sub>3</sub> nanoparticles and their photocatalytic activity for degradation of azo dyes
publisher MDPI AG
series Catalysts
issn 2073-4344
publishDate 2021-06-01
description Gadolinium oxide (Gd<sub>2</sub>O<sub>3</sub>) nanoparticles were prepared via the reaction of gadolinium nitrate hexahydrate (Gd (NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O) and ethylamine (C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub>), and their surface morphology, particle size, and properties were examined by using scanning electron microscopy, X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, and ultraviolet visible (UV-vis) spectroscopy. The Gd<sub>2</sub>O<sub>3</sub> nanoparticles were used as the photocatalyst for the degradation of various azo dyes, such as methyl orange (MO), acid orange 7 (AO7), and acid yellow 23 (AY23) under irradiation with UV light. The effect of the experimental parameters (initial concentration of azo dyes, dosage of catalyst, and wavelength of UV light) on the photocatalytic properties of the Gd<sub>2</sub>O<sub>3</sub> nanoparticles were investigated. At a constant H<sub>2</sub>O<sub>2</sub> concentration, the photocatalytic degradation efficiency of the Gd<sub>2</sub>O<sub>3</sub> nanoparticles for various azo dyes was in the order: methyl orange > acid orange 7 > acid yellow 23. The kinetics study showed that the photocatalytic degradation of azo dyes was followed by a pseudo first-order reaction rate law.
topic gadolinium oxide nanoparticles
photocatalytic activity
azo dyes
kinetics study
url https://www.mdpi.com/2073-4344/11/6/742
work_keys_str_mv AT sugyeongjeon synthesisofgdsub2subosub3subnanoparticlesandtheirphotocatalyticactivityfordegradationofazodyes
AT jeongwonko synthesisofgdsub2subosub3subnanoparticlesandtheirphotocatalyticactivityfordegradationofazodyes
AT weonbaeko synthesisofgdsub2subosub3subnanoparticlesandtheirphotocatalyticactivityfordegradationofazodyes
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