Fabrication and nano structural study on La2O3-Co3O4-ZrO2 composite

Aghaeenejad, N.; Bahari, A.; Riazian, M.; Ghanbari, M.

doi:10.7508/ijnd.2015.06.006

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	Fabrication and nano structural study on La2O3-Co3O4-ZrO2 composite
Article 7, Volume 6, Issue 1, Winter 2015, Page 39-44 PDF (744 K)
Document Type: Reasearch Paper
DOI: 10.7508/ijnd.2015.06.006
Authors
N. Aghaeenejad¹; A. Bahari²; M. Riazian ³; M. Ghanbari⁴
¹Department of Physics, Mazandaran Science and Research Branch, Islamic Azad University, Mazandaran, Iran.
²Department of Physics, University of Mazandaran, Babolsar, Iran.
³Department of Engineering, Tonekabon branch, Islamic Azad University, Tonekabon, Iran.
⁴Department of Physic, Islamic Azad University, Centeral Tehran Branch, Iran.
Abstract
We report on the synthesis, morphology, chemically and structurally of La₂O₃-Co₃O₄-ZrO₂ nanostructure. The La₂O₃-Co₃O₄-ZrO₂ nanostructure was synthesized by a method based on the co-precipitation. Composite powders have been characterized by XRD (X-ray diffraction), SEM (scanning electron microscopy) and BET (Brunauer-Emmett-Teller). X-ray diffraction showed the formation of nano crystalline, La₂Zr₂O₇, ZrO₂, La(OH)₃ and Co₃O₄ phases. Scanning electron microscopy revealed that nanostructure formed by increasing the calcinations temperatures. With BET and BJH (Barrett, Joyner and Halenda) method the pore size distribution was determined. The effects of chemical compositions and calcinations temperature on the surface topography and the crystallization of phases were studied. The lattice strain of nanocrystallite during thermal treatment was calculated.
Keywords
Fabrication; Nanostructure; La2O3-Co3O4-ZrO2; Composite; co-precipitation


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