Synthesis and characterization of ZnO nanoparticle synthesized by a microwave-assisted combustion method and catalytic activity for the removal of ortho-nitrophenol

ZnO nanoparticles were manufactured using microwave-assisted combustion. The structural and morphological properties of the nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy, and Fourier transform infrared spectroscopy. Photocatalytic degradatio...

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Bibliographic Details
Published in:Desalination and water treatment 2015-05, Vol.54 (7), p.1939-1948
Main Authors: Assi, Navid, Mohammadi, Ali, Sadr Manuchehri, Qazale, Walker, Roderick B.
Format: Article
Language:English
Subjects:
Combustion
Degradation
Diffraction
Field emission
Fourier transforms
Infrared spectroscopy
Irradiation
Liquid chromatography
Microwave-assisted combustion
Nanoparticles
Nanostructure
Ortho-nitrophenol
Photocatalysis
Photocatalytic degradation
Photodegradation
Solar energy
Ultraviolet radiation
X-ray diffraction
Zinc oxide
ZnO nanoparticles
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Summary:ZnO nanoparticles were manufactured using microwave-assisted combustion. The structural and morphological properties of the nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy, and Fourier transform infrared spectroscopy. Photocatalytic degradation of ortho-nitrophenol (O-NP) in aqueous solution using the synthesized nanoparticles was performed under UV–C irradiation and is reported for the first time. The effect of the initial O-NP concentration, amount of photocatalyst, pH, and salt was investigated during photodegradation. Analysis of the degraded samples using HPLC with UV detection revealed that photocatalysis in the presence of ZnO nanoparticles removed 98% of the O-NP in 5 h. In addition, the photocatalytic degradation kinetics of O-NP were studied, and the results suggest that the data are best fitted to pseudo-first-order kinetic and Langmuir–Hinshelwood models.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2014.891083