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http://dx.doi.org/10.4191/kcers.2018.55.2.10

Characterization of ZnO/TiO2 Nanocomposites Prepared via the Sol-Gel Method  

Hellen, Nalumaga (Department of Advanced Materials Engineering, Kangwon National University)
Park, Hyun (Department of Advanced Materials Engineering, Kangwon National University)
Kim, Kyung-Nam (Department of Advanced Materials Engineering, Kangwon National University)
Publication Information
Journal of the Korean Ceramic Society / v.55, no.2, 2018 , pp. 140-144 More about this Journal
Abstract
$ZnO/TiO_2$ nanocomposites were synthesized via a modified sol-gel technique by incorporating 30 and 70 wt% $TiO_2$ nanopowder into a ZnO sol-gel matrix. Zinc acetate dihydrate was used as the ZnO precursor and de-ionized water as the solvent, while titanium oxysulfate was employed for the synthesis of $TiO_2$ nanopowder. The synthesized $ZnO/TiO_2$ nanocomposites were characterized by x-ray diffraction, UV-vis spectroscopy, scanning electron microscopy, and transmission electron microscopy. The $ZnO/TiO_2$ nanocomposites showed both the ZnO (wurtzite) and $TiO_2$ (anatase) phases. The average ZnO crystallite size of the $ZnO/TiO_2$ nanocomposites was found to be about 26.3 nm. The TEM results confirmed that spherical $TiO_2$ particles were embedded in the ZnO matrix. $TiO_2$ particles attached onto the rod-like ZnO particles were also observed. The $ZnO/TiO_2$ nanocomposites exhibited optical absorption properties superior to those of pure ZnO and $TiO_2$.
Keywords
$ZnO/TiO_2$; Nanocomposite; Sol-gel; Optical property;
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Times Cited By KSCI : 1  (Citation Analysis)
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