Synthesis and characterization of polycrystalline brownmillerite cobalt doped Ca2Fe2O5

Brownmillerite compounds with general formula A2BB’O5 (BB’ = Mn, Al, Fe, Co) have attracted attention in wide range of applications such as in solid oxide fuel cell, oxygen separation membrane and photocatalysis. Brownmillerite compounds have unique structure with alternate layers of BO6 octahedral...

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Bibliographic Details
Main Authors: Dhankhar, Suchita, Bhalerao, Gopal, Baskar, K., Singh, Shubra
Format: Conference Proceeding
Language:English
Subjects:
Aluminum
Brownmillerite
Calcium aluminum ferrite
Cobalt compounds
Diffuse reflectance spectroscopy
Iron
Manganese
PERT
Polycrystals
Scanning electron microscopy
Solid oxide fuel cells
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Summary:Brownmillerite compounds with general formula A2BB’O5 (BB’ = Mn, Al, Fe, Co) have attracted attention in wide range of applications such as in solid oxide fuel cell, oxygen separation membrane and photocatalysis. Brownmillerite compounds have unique structure with alternate layers of BO6 octahedral layers and BO4 tetrahedral layers. Presence of dopants like Co in place of Fe increases oxygen vacancies. In the present work we have synthesized polycrystalline Ca2Fe2O5 and Ca2Fe1-xCoxO5 (x = 0.01, 0.03) by citrate combustion route. The as prepared samples were characterized by XRD using PANalytical X’Pert System, DRS (Diffuse reflectance spectroscopy) and SEM (Scanning electron microscopy).
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4948198