Synthesis of Nanocrystalline ZnFe2O4 by Polymerized Complex Method for its Visible Light Photocatalytic Application: An Efficient Photo-oxidant

[摘要] Nanocrystalline ZnFe₂O₄ 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 ZnFe₂O₄ made by PC method is in total contrast to that was observed in ZnFe₂O₄ prepared by the conventional solid-state reaction (SSR) method. The band gap of the nanocrystalline ZnFe₂O₄ determined by UV-DRS was 1.90 eV (653 nm). The photocatalytic activity of ZnFe₂O₄ prepared by PC method as investigated by the photo-decomposition of isopropyl alcohol (IPA) under visible light (�? 420 nm) was much higher than that of the ZnFe₂O₄ prepared by SSR as well as TiO₂-xNx. High photocatalytic activity of ZnFe₂O₄ prepared by PC method was mainly due to its surface area, crystallinity and the dispersity of platinum metal over ZnFe2O4.

[学科分类] 化学（综合）

[关键词] Zinc ferrites;Nano-particles;Polymerized complex method;Photocatalytic activity