NDLI: EXAFS and XANES Investigations of CuFe 2 O 4 Nanoparticles and CuFe 2 O 4-MO 2 ( M ) Sn , Ce ) Nanocomposites

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EXAFS and XANES Investigations of CuFe 2 O 4 Nanoparticles and CuFe 2 O 4-MO 2 ( M ) Sn , Ce ) Nanocomposites

Content Provider	Semantic Scholar
Author	Krishnan, Venkata Selvan, Ramakrishnan Kalai Augustin, Chanassary Ouso Gedanken, Aharon Bertagnolli, Helmut
Abstract	Structural investigations were performed on combustion synthesized CuFe 2O4 nanoparticles and CuFe 2O4MO2 (M ) Sn, Ce) nanocomposites in different compositions, by means of X-ray absorption fine structure spectroscopy. The studies on CuFe 2O4 nanoparticles reveal that the samples have a structure analogous to that of the bulk material, wherein all the copper ions occupy the octahedral sites and the iron ions are distributed between the tetrahedral and octahedral sites. The XAFS investigations on CuFe 2O4-SnO2 and CuFe2O4CeO2 nanocomposites show that the incorporation of the tetravalent metal ions in the spinel lattice does not alter the local structure around copper and iron in CuFe 2O4 nanoparticles. The X-ray diffraction pattern indicates CuFe2O4 as a single phase in the nanoparticles and shows the incorporation of metal ions in the spinel structure in addition to the existence of MO 2 and CuFe2O4 phases in CuFe 2O4-MO2 nanocomposites. The nanometric size of the as-synthesized materials has been confirmed by transmission electron microscopy studies. The high-resolution transmission electron microscopy investigations also confirm that CuFe 2O4 exists as a single phase and reveal the composite nature of CuFe 2O4-MO2 materials.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://bib-pubdb1.desy.de/record/83820/files/Published.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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