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http://dx.doi.org/10.14478/ace.2018.1059

Study on Synthesis and Characterization of Magnetic ZnFe2O4@SnO2@TiO2 Core-shell Nanoparticles  

Yoo, Jeong-yeol (Department of Chemistry, College of Natural Science, Dankook University)
Park, Seon-A (Department of Chemistry, College of Natural Science, Dankook University)
Jung, Woon-Ho (Department of Chemistry, College of Natural Science, Dankook University)
Park, Seong-Min (Department of Chemistry, College of Natural Science, Dankook University)
Tae, Gun-Sik (Department of biology, College of Natural Science, Dankook University)
Kim, Jong-Gyu (Department of Chemistry, College of Natural Science, Dankook University)
Publication Information
Applied Chemistry for Engineering / v.29, no.6, 2018 , pp. 710-715 More about this Journal
Abstract
In this study, $ZnFe_2O_4@SnO_2@TiO_2$ core-shell nanoparticles (NPs), a photocatalytic material with magnetic properties, were synthesized through a three-step process. Structural properties were investigated using X-ray diffraction (XRD) analysis. It was confirmed that $ZnFe_2O_4$ of the spinel, $SnO_2$ of the tetragonal and $TiO_2$ of the anatase structure were synthesized. The magnetic properties of synthesized materials were studied by a vibrating sample magnetometer (VSM). The saturation magnetization value of $ZnFe_2O_4$, a core material, was confirmed at 33.084 emu/g. As a result of the formation of $SnO_2$ and $TiO_2$ layers, the magnetism due to the increase in thickness was reduced by 33% and 40%, respectively, but sufficient magnetic properties were reserved. The photocatalytic efficiency of synthesized materials was measured using methylene blue (MB). The efficiency of the core material was about 4.2%, and as a result of the formation of $SnO_2$ and $TiO_2$ shell, it increased to 73% and 96%, respectively while maintaining a high photocatalytic efficiency. In addition, the antibacterial activity was validated via the inhibition zone by using E. Coli and S. Aureus. The formation of shells resulted in a wider inhibition zone, which is in good agreement with photocatalytic efficiency measurements.
Keywords
magnetic; core-shell; nanoparticle; photocatalyst; antibacterial;
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