Synthesis and optical properties of ZnO nanostructures in imidazolium-based ionic liquids |
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| Affiliation: | 1. Faculty of Chemistry and Chemical Engineering, Malek-Ashtar University of Technology, Tehran, Iran;2. Research Institute of Petroleum Industry, West Blvd. Azadi Sports Complex, Tehran, Iran;1. Núcleo de Química de Heterociclos (NUQUIMHE), Department of Chemistry (Building 15A), Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Camobi, CEP: 97105-900 Santa Maria, RS, Brazil;2. Laboratório de Espectroscopia e Polímeros (LEPOL), Department of Physics (Building 13), Federal University of Santa Maria (UFSM), Av. Roraima, 1000, Camobi, CEP: 97105-900 Santa Maria, RS, Brazil;1. Semiconductor Materials and Device Laboratory, Department of Semiconductor Science, Dongguk University-Seoul, Jung-gu, Seoul 04623, South Korea;2. Department of Chemistry, Indian Institute of Technology (IIT) Ropar, Rupnagar, Panjab 140001, India |
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| Abstract: | Different morphologies of ZnO nanostructures have been synthesized by a simple reflux method, in imidazolium-based ionic liquids and water as a solvent. The effects of ionic liquid as a template with different concentrations and the amount of sodium hydroxide on the morphology and size of nanostructures were investigated. The structural and optical properties of these ZnO particles were studied by using XRD, SEM and UV–Visible. The characteristic results revealed that using different ionic liquids in water not only prevent a drastic increase in the crystallite size of the zinc oxide species but also provide suitable conditions for the oriented growth of primary nanoparticles with nano sheet and nano hallow block. The results show that the longer alkyl chain at position-1 of imidazole ring or using dicationic ionic liquid with a definite concentration cause the more width of nano sheet. A possible mechanism was proposed to explain the formation of ZnO nanostructures with different morphology. |
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