Processing and Application of Ceramics 2014 Volume 8, Issue 2, Pages: 81-85
https://doi.org/10.2298/PAC1402081P
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Synthesis and characterization of biomorphic CeO2 obtained by using egg shell membrane as template
Prekajski Marija (Vinča Institute of Nuclear Sciences, Belgrade)
Babić Biljana (Vinča Institute of Nuclear Sciences, Belgrade)
Bučevac Dušan (Vinča Institute of Nuclear Sciences, Belgrade)
Pantić Jelena (Vinča Institute of Nuclear Sciences, Belgrade)
Gulicovski Jelena (Vinča Institute of Nuclear Sciences, Belgrade)
Miljković Miroslav (Medical Faculty, Center of Electron Microscopy, Niš)
Matović Branko (Vinča Institute of Nuclear Sciences, Belgrade)
A new technology based on bio-templating approach was proposed in this paper.
Egg-shell membrane (ESM) has been employed as a natural biotemplate. Fibrous
oxide ceramics was prepared by wet impregnation of biological template with
water solution of cerium nitrate. The template was derived from membranes of
fresh chicken eggs. Repeated impregnation, pyrolysis and final calcination in
the range of 600 to 1200°C in air resulted in template burnout and
consolidation of the oxide layers. At low temperatures, the obtained products
had structure which corresponded to the negative replication of biological
templates. Unique bio-morphic CeO2 microstructures with interwoven networks
were synthesized and characterized by scanning electron microscope (SEM) and
X-ray diffraction (XRD), whereas low-temperature nitrogen adsorption (BET)
method was used in order to characterize porous properties.
Keywords: bio-templating, CeO2, microstructure, SEM, XRD, BET
Projekat
Ministarstva nauke Republike Srbije, br. 45012