期刊
RARE METALS
卷 27, 期 4, 页码 340-344出版社
NONFERROUS METALS SOC CHINA
DOI: 10.1016/S1001-0521(08)60141-2
关键词
inorganic non-metal materials; EDTA complexing sol-gel; La2Mo2O9; nanoparticles; porous structure
资金
- State Key Laboratory of Powder Metallurgy of China [200506123105A, 20070620090631B14]
A facile EDTA (ethylene diamine tetraacetic acid) complexing technique has been successfully employed to prepare La2Mo2O9 nanoparticles. The as-synthesized products are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR). The results show that a homogeneous transparent gel can be obtained with EDTA as the organic complexing reagent under the pH value of 3.0. Further thermal decomposition of the as-synthesized transparent gel by increasing the temperature up to 600 degrees C for 3 h results in the fon-nation of La2Mo2O9 nanoparticles with a crystal size of about 30 nm. Moreover, the nanoparticles tend to form micrometer-sized aggregates with a three-dimensional network structure, which shows promising applications in solid oxide fuel cells (SOFC), catalysts and so on.
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