Microwave assisted synthesis of ZnO nanoparticles in ionic liquid [Bmim]cl and their photocatalytic investigation

In this study, ZnO nanoparticles were synthesized based on the chemical reaction of zinc acetate and NaOH in ionic liquid 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) under microwave irradiation. The prepared ZnO were characterized by utilizing various techniques such as X-ray diffraction (XRD),...

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Bibliographic Details
Published in:Materials science in semiconductor processing 2014-10, Vol.26, p.244-250
Main Authors: Rabieh, Sasan, Bagheri, Mozhgan, Heydari, Mojgan, Badiei, Elahe
Format: Article
Language:English
Subjects:
Applied sciences
Chemistry
Cross-disciplinary physics: materials science
rheology
Degradation
Electrochemistry
Electrodes: preparations and properties
Exact sciences and technology
Fractures
General and physical chemistry
Ionic liquid
Ionic liquids
Malachite green
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Nanoparticles
Nanopowders
Nanoscale materials and structures: fabrication and characterization
Photocatalysis
Photochemistry
Photodegradation
Physical chemistry of induced reactions (with radiations, particles and ultrasonics)
Physics
Scanning electron microscopy
Semiconductors
Zinc oxide
ZnO
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Summary:In this study, ZnO nanoparticles were synthesized based on the chemical reaction of zinc acetate and NaOH in ionic liquid 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) under microwave irradiation. The prepared ZnO were characterized by utilizing various techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–Vis spectroscopy, FT-IR spectroscopy, and BET method. XRD pattern reveals the produced ZnO has hexagonal structure and the images of SEM and TEM also reveal it consists of nanoparticles with an average size between 15 and 25nm. The role of the ionic liquid on morphology of ZnO was investigated. For this purpose, a control ZnO sample was prepared without using any [Bmim]Cl. Photocatalytic properties of the synthesized ZnO on degradation of malachite green dye as model pollutant was investigated. The effect of various parameters such as pH, concentration of the dye and catalyst on the degradation of malachite green was investigated. In order to explore the mechanism of photocatalytic degradation of malachite green, scavenger addition method has been employed. It is found that hydroxide radicals are main reactive species for the degradation.
ISSN:1369-8001
1873-4081
DOI:10.1016/j.mssp.2014.05.013