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http://dx.doi.org/10.5012/bkcs.2014.35.9.2813

Synthesis of Core@shell Structured CuFeS2@TiO2 Magnetic Nanomaterial and Its Application for Hydrogen Production by Methanol Aqueous Solution Photosplitting  

Kang, Sora (Department of Chemistry, College of Science, Yeungnam University)
Kwak, Byeong Sub (Department of Chemistry, College of Science, Yeungnam University)
Park, Minkyu (Department of Chemistry, College of Science, Yeungnam University)
Jeong, Kyung Mi (Department of Engineering in Energy and Applied Chemistry, Silla University)
Park, Sun-Min (Korean Institutes of Ceramic Engineering and Technology (KICET))
Kang, Misook (Department of Chemistry, College of Science, Yeungnam University)
Publication Information
Bulletin of the Korean Chemical Society / v.35, no.9, 2014 , pp. 2813-2817 More about this Journal
Abstract
A new magnetic semiconductor material was synthesized to enable separation after a liquid-type photocatalysis process. Core@shell-structured $CuFeS_2@TiO_2$ magnetic nanoparticles were prepared by a combination of solvothermal and wet-impregnation methods for photocatalysis applications. The materials obtained were characterized using X-ray diffraction, transmission electron microscopy, ultraviolet-visible, photoluminescence spectroscopy, Brunauer-Emmett-Teller surface area measurements, and cyclic voltammetry. This study confirmed that the light absorption of $CuFeS_2$ was shifted significantly to the visible wavelength compared to pure $TiO_2$. Moreover, the resulting hydrogen production from the photo-splitting methanol/water solution after 10 hours was more than 4 times on the core@shell structured $CuFeS_2@TiO_2$ nanocatalyst than on either pure $TiO_2$ or $CuFeS_2$.
Keywords
Core@shell structure; $CuFeS_2@TiO_2$; Magnetic property; Methanol/water splitting; Hydrogen production;
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