Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Synthesis of Nanocrystalline ZnFe2O4 by Polymerized Complex Method for its Visible Light Photocatalytic Application: An Efficient Photo-oxidant

  • Jang, Jum-Suk (Department of Chemical Engineering, Pohang University of Science and Technology) ;
  • Borse, Pramod H. (Department of Chemical Engineering, Pohang University of Science and Technology) ;
  • Lee, Jae-Sung (Centre for Nanomaterials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARC International)) ;
  • Jung, Ok-Sang (Department of Chemical Engineering, Pohang University of Science and Technology) ;
  • Cho, Chae-Ryong (Department of Chemistry (BK21), Pusan National University) ;
  • Jeong, Euh-Duck (Department of Nano Fusion Technology, Pusan National University) ;
  • Ha, Myoung-Gyu (Busan Center, Korea Basic Science Institute) ;
  • Won, Mi-Sook (Busan Center, Korea Basic Science Institute) ;
  • Kim, Hyun-Gyu (Busan Center, Korea Basic Science Institute)
  • Published : 2009.08.20
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Abstract

Nanocrystalline Zn$Fe_2O_4$ oxide-semiconductor with spinel structure was synthesized by the polymerized complex (PC) method and investigated for its photocatalytic and photoelectric properties. The observation of a highly pure phase and a lower crystallization temperature in Zn$Fe_2O_4$ made by PC method is in total contrast to that was observed in Zn$Fe_2O_4$ prepared by the conventional solid-state reaction (SSR) method. The band gap of the nanocrystalline Zn$Fe_2O_4$ determined by UV-DRS was 1.90 eV (653 nm). The photocatalytic activity of Zn$Fe_2O_4$ prepared by PC method as investigated by the photo-decomposition of isopropyl alcohol (IPA) under visible light (${\geq}$ 420 nm) was much higher than that of the Zn$Fe_2O_4$ prepared by SSR as well as Ti$O_{2-x}N_x$. High photocatalytic activity of Zn$Fe_2O_4$ prepared by PC method was mainly due to its surface area, crystallinity and the dispersity of platinum metal over Zn$Fe_2O_4$.

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