Low-temperature preparation and physical characterization of doped BaCeO3 nanoparticles by chemical precipitation

International Journal of Industrial Chemistry

دوره 4، شماره 1، اسفند 2013، صفحه 134-146

نوع مقاله: research article

شناسه دیجیتال (DOI): https://doi.org/10.1186/2228-5547-4-18

نویسندگان

Joseph Sundar Singh Jasmine Ketzial؛ Devi Radhika؛ Arputharaj Samson Nesaraj^*

Department of Chemistry, Karunya University (Karunya Institute of Technology and Sciences), Coimbatore, Tamil Nadu, 641 114, India

چکیده

Background
In this work, the nanoparticles of pure BaCe_1−xM _x O_3−δ (where M = Gd or Sm and x = 0, 0.10, or 0.20) were synthesized by the simple chemical precipitation method. The prepared materials were calcined at 300°C, 450°C, and 600°C for 2 h each to obtain phase-pure compounds. The samples were characterized by thermogravimetry/differential thermal analysis (TGA/DTA), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDAX) analysis, Fourier transform infrared (FTIR), particle size analysis, and scanning electron microscopy.
Results
TGA/DTA results have shown that phase-pure BaCeO₃ materials can be formed only above 500°C. The crystalline structure of parent and doped BaCeO₃ was found to be orthorhombic. EDAX analysis has shown the atomic percentage of elements present in the Gd- and Sm-doped BaCeO₃ samples. FTIR studies have shown the presence of Ce-O in doped BaCeO₃ nanoparticles.
Conclusions
Doped BaCeO₃ may be used as an electrolyte for solid oxide fuel cell applications.

کلیدواژه‌ها

Gd/Sm-doped BaCeO3؛ Nanosized powder؛ Chemical precipitation؛ Physical characterization