Open AccessSynthesis, Characterization, and Spectroscopic Properties of ZnO Nanoparticles
Author(s) -
T. Satyanarayana,
K. Srinivasa Rao,
Gunnam Nagarjuna
Publication year - 2012
Publication title -
isrn nanotechnology
Language(s) - English
Resource type - Journals
eISSN - 2090-6072
pISSN - 2090-6064
DOI - 10.5402/2012/372505
Subject(s) - photoluminescence , materials science , nanoparticle , transmission electron microscopy , scanning electron microscope , absorption spectroscopy , absorption (acoustics) , spectroscopy , analytical chemistry (journal) , band gap , zinc nitrate , zinc , x ray photoelectron spectroscopy , nanotechnology , chemical engineering , optoelectronics , chemistry , optics , physics , engineering , chromatography , quantum mechanics , metallurgy , composite material
ZnO nanoparticles have been synthesized by precipitation method from Zinc nitrate. The powder was characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected-area electron diffraction, UV-vis optical absorption, and photoluminescence spectroscopy analyses. XRD patterns showed that ZnO nanoparticles have hexagonal unit cell structure. SEM and TEM pictures reveal the morphology and particle size of prepared ZnO nanoparticles. The UV-vis absorption spectrum shows an absorption band at 355 nm due to ZnO nanoparticles. The photoluminescence spectrum exhibits two emission peaks one at 392 nm corresponding to band gap excitonic emission and another located at 520 nm due to the presence of singly ionized oxygen vacancies. The synthesis method has potential for application in manufacturing units due to ease processing and more economical reagents.
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