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Synthesis of wide band gap nanocrystalline NiO powder via a sonochemical method |
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| Authors: | Mohseni Meybodi S Hosseini S A Rezaee M Sadrnezhaad S K Mohammadyani D |
| Affiliation: | a Islamic Azad University, Maybod Branch, Maybod, Iran b Materials and Energy Research Center (MERC), P.O. Box 14155-4777, Tehran, Iran c Mining and Metallurgical Engineering Department, Amirkabir University of Technology, P.O. Box 15875-4413, Tehran, Iran d Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11155-9466, Tehran, Iran |
| Abstract: | A sonochemistry-based synthesis method was used to produce nanocrystalline nickel oxide powder with ∼20 nm average crystallite diameter from Ni(OH)2 precursor. Ultrasound waves were applied to the primary solution to intensify the Ni(OH)2 precipitation. Dried precipitates were calcined at 320 °C to form nanocrystalline NiO particles. The morphology of the produced powder was characterized by transmission electron microscopy. Using sonochemical waves resulted in lowering of the size of the nickel oxide crystallites. FT-IR spectroscopy and X-ray diffraction revealed high purity well-crystallized structure of the synthesized powder. Photoluminescence spectroscopy confirmed production of a wide band-gap structure. |
| Keywords: | Nickel oxide Sonochemistry Nanocrystalline powder Photoluminescence spectroscopy |
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