Synthesis and Characterization of Lanthanum Zirconate Nanocrystals Doped with Iron Ions by a Salt-Assistant Combustion Method
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Nanocrystalline (La x Fe1−x )2Zr2O7 series solid solutions were prepared by a convenient salt-assisted combustion process using glycine as fuel. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). The results showed the La ion can be partially replaced by Fe ion. The partial substituted products were still single-phase solid solutions and the crystal form remained unchanged. TEM images reveal that the products are composed of well-dispersed square-shaped nanocrystals. The method provides a convenient and low-cost route for the synthesis of nanostructures of oxide materials. The catalytic property of (La x Fe1−x )2Zr2O7 can be measured by the change of catalytic degradation rate of Methyl orange. The results show that the catalytic property of La x Fe2−x Zr2O7 is significant, and it has good application prospects as photocatalyst.
KeywordsSoft chemistry (LaxFe1−x)2Zr2O7 Nanocrystalline Pyrochlore Catalytic property
This investigation was supported by the National Natural Science Foundation of China and China Academy of Engineering Physics (No. 10776014), the Science and Technology Supporting Item of Jiangsu Province, China (No. BE2009159).
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