Abstract
Reaction between sodium hydroxide and zinc acetate leads to the formation of zinc hydroxide, Zn(OH)2. The as-prepared Zn(OH)2 was then decomposed by using conventional heating process or with the aid of microwave irradiation. The nanoproducts of both methods were ZnO nanostructures of different size and shape, but the microwave irradiation method shows many advantages in yield and reaction time. Some surfactants such as SDS, CTAB, or PVP were then used to cap the product for studying the influence on the morphology and properties of the nanostructures.
Highlights
Zinc oxide has been famous for a wide range of applications in the functional devices, photo-catalysts, optical materials, cosmetics, nanostructure varistors, UV absorbers, gas sensors, and industrial additives [1,2,3,4,5]
It appears that the ZnO nanoparticles prepared with different heating process have different sizes due to the influence of temperature gradient and reaction time
It is clearly seen that ordinary heating by electric cooker leads to the formation of aggregated clusters of particles of which size distribution is quite large while the nanoparticles obtained from reactions in microwave irradiation field have small size of only several tens nanometer
Summary
Zinc oxide has been famous for a wide range of applications in the functional devices, photo-catalysts, optical materials, cosmetics, nanostructure varistors, UV absorbers, gas sensors, and industrial additives [1,2,3,4,5]. Mechanochemical processing, solgel, or hydrothermal processing methods constitute pertinent examples. Many of these methods, or at least some of their varieties, are overly costly and constitute demonstrations of laboratory interest only. Microwave energy has become a very efficient means of heating reactions. Microwave irradiation is well known to promote the synthesis of a variety of compounds, where chemical reactions are accelerated because of selective absorption of microwave by polar molecules. We report an effective method for the preparation of ZnO nanoparticles by using microwave irradiation. The microwave irradiation method considered is fast, mild, energy-efficient, and environment-friendly and, it is not a weak substitute of the conventional method
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