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http://dx.doi.org/10.12925/jkocs.2017.34.1.50

Effect of Surfactants on ZnO Synthesis by Hydrothermal Method and Photocatalytic Properties  

Hyeon, Hye-Hyeon (Department of Engineering Chemistry, Chungbuk National University)
Lee, Dong-Kyu (Department of Engineering Chemistry, Chungbuk National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.34, no.1, 2017 , pp. 50-57 More about this Journal
Abstract
Zinc oxide is, one of metal oxide semiconductor, harmless to human and environment-friendly. It has excellent chemical and thermal stability properties. Wurtzite-zinc oxide is a large band gap energy of 3.37 eV and high exciton binding energy of 60 meV. It can be applied to various fields, such as solar cells, degradation of the dye waste, the gas sensor. The photocatalytic activity of zinc oxide is varied according to the particle shape and change of crystallinity. Therefore, It is very important to specify the additives and the experimental variables. In this study, the zinc oxide were synthesized by using a microwave assisted hydrothermal synthesis. The precursor was used as the zinc nitrate, the pH value was controlled as 11 by NaOH. Surfactants are the ethanolamine, cetyltrimethylammonium bromide, sodium dodecyl sulfate, sorbitan monooleate was added by changing the concentration. The composite particles had the shape of a star-like, curcular cone, seed shape, flake-sphere. Physical and chemical properties of the obtained zinc oxide was characterized using x-ray diffractometer, field emission scanning electron microscopy, thermogravimetric analysis and optical properties was characterized using UV-visible spectroscopy, photoluminescence and raman spectroscopy.
Keywords
ZnO; Surfactnats additives; Particle shapes; Decolorization efficiency;
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Times Cited By KSCI : 1  (Citation Analysis)
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