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- W2011134436 abstract "AbstractZinc oxide nano-particles were prepared by a sol–gel pyrrolysis technique using zinc acetate as the precursor compound, isopropanol (IP) as solvent and monoethanolamine (MEA) as chelating and structure directing agent. The dried sol treated in different annealing temperatures was analyzed via thermogravimetry analysis (TG-DTG). Zinc oxide nano-particles were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and field emission scanning electron microscopy (FESEM) techniques and their optical properties were also investigated using diffuse reflectance (DRS) spectroscopy. The results showed that the annealing temperature affected the particle sizes of zinc oxide nano-particles and the weight loss occurred at a peak temperature of 315°C corresponding to formation of zinc oxide. The results indicated that 450°C is the optimum calcination temperature to produce effective zinc oxide nano-particles. The XRD results suggested that the zinc acetate were completely converted to zinc oxide above 350°C. The average crystallite size of the zinc oxide nano-particles was analyzed by XRD and estimated to vary from 54 nm to 65 nm. The results of DRS showed optical band gaps of 3.235, 3.211, and 3.215 eV for zinc oxide nano-particles annealed at 350°C, 450°C, and 550°C, respectively.Keywords: band gapDRSoptical propertiessol–gelZnO nano-crystalline" @default.
- W2011134436 created "2016-06-24" @default.
- W2011134436 creator A5061772837 @default.
- W2011134436 creator A5073861749 @default.
- W2011134436 date "2014-04-17" @default.
- W2011134436 modified "2023-10-09" @default.
- W2011134436 title "Preparation, Characterization, and Application of Zinc Oxide Nanoparticles by Sol-Gel Pyrrolysis Method: Influence of Annealing Temperature on Crystalline Phases" @default.
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- W2011134436 doi "https://doi.org/10.1080/15533174.2013.801856" @default.
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