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http://dx.doi.org/10.4191/kcers.2013.50.6.504

Hydrothermal Synthesis, Characterization and Improved Activity of a Visible-Light-Driven ZnSe-Sensitized TiO2 Composite Photocatalyst  

Zhu, Lei (Department of Advanced Materials Science & Engineering, Hanseo University)
Peng, Mei-Mei (Chemical Engineering Department, Hanseo University)
Cho, Kwang Youn (Korea Institute of Ceramic Engineering and Technology)
Ye, Shu (Department of Advanced Materials Science & Engineering, Hanseo University)
Sarkar, Sourav (Department of Advanced Materials Science & Engineering, Hanseo University)
Ullah, Kefayat (Department of Advanced Materials Science & Engineering, Hanseo University)
Meng, Ze-Da (Department of Advanced Materials Science & Engineering, Hanseo University)
Oh, Won-Chun (Department of Advanced Materials Science & Engineering, Hanseo University)
Publication Information
Journal of the Korean Ceramic Society / v.50, no.6, 2013 , pp. 504-509 More about this Journal
Abstract
In this study, ZnSe-$TiO_2$ composites were synthesized by a facile hydrothermal-assisted sol-gel process and characterized by nitrogen adsorption isotherms (77 K), X-ray diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) analysis, transmission electron microscopy (TEM) and UV-vis diffuse reflectance spectrophotometry. The photocatalytic activity was investigated by decoloration methylene blue (MB), methyl orange (MO), and rhodamine B (Rh.B) in an aqueous solution under visible light irradiation. The results revealed that the photocatalytic activity of the ZnSe-$TiO_2$ photocatalyst was much higher than that of pure$TiO_2$. The ZnSe nanoparticles, which act as a photosensitizer, not only extend the spectral response of $TiO_2$ to the visible region but also reduce charge recombinations.
Keywords
$TiO_2$; ZnSe; UV-vis; Hydrothermal; Visible light photocatalytic;
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Times Cited By KSCI : 2  (Citation Analysis)
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