NDLI: Synthesis of Zinc Oxide Nanoparticles via Sol-gel Technique

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Synthesis of Zinc Oxide Nanoparticles via Sol-gel Technique

Content Provider	Semantic Scholar
Author	Habiba, Umme Khatun, Afroza Ratul, Rezvi Ahamed Ahmed, Dewan Shabbir Hossain, Shakhawat Rahman, Mijanur Kabir, Humayun
Copyright Year	2020
Abstract	In this work, Zinc Oxide nanoparticles (ZnO-NPs) were successfully synthesizedvia a facile sol-gel techniqueusingzinc acetate dehydrate, triethanolamine, ethanol and ammonium hydroxide. Characteristics of the as synthesizedZnO-NPs were studied via X-Ray diffraction (XRD), environmental scanning electron microscopy (ESEM), energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, thermo gravimetric analysis,ultraviolet visible (UV-Vis) spectroscopy and photoluminescence spectroscopy. The XRD patterns confirmed the hexagonalwurtzite structure of ZnOwith lattice constant values, a = b = 3.2488 Å and c = 5.2054 Å . The average size of NPs estimated from ESEM images were in good agreement with the average crystal size obtained from the XRD data.The average particle size estimated from ESEM micrographs for solgel synthesis of ZnO-NPs was nearly 60 nm. The EDS study confirmed the presence of Oxygen and Zinc in the ZnO-NPs. The computed value of optical band gap was found to be 3.18 eV. The photoluminescencespectra revealed a strong emission band located at a wavelength of375 nm which is a typical UV band. This may be ascribed to the exciton recombination related near-band edge emission ofZnO. A week blueband at 465 nm was also observed which is owing to the electron transition from the conduction band to interstitialoxygen defects (Oin) in the ZnO.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://iosrjournals.org/iosr-jap/papers/Vol12-issue2/Series-1/C1202011019.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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