1
|
Omari E, Omari M, Barkat D. Oxygen evolution reaction over copper and zinc co-doped LaFeO3 perovskite oxides. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.09.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
2
|
Omari E, Makhloufi S, Omari M. Preparation by Sol–Gel Method and Characterization of Co-doped LaNiO3 Perovskite. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0604-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
3
|
Fodil H, Omari M. Synthesis, Structural and Physicochemical Characterization of Nanocrystalline La1−xNaxCrO3 Powders by Sol–Gel Method. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0605-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
4
|
Fodil H, Omari M. Synthesis, Structural and Physicochemical Characterization of BaFe1-xAlxO3−δ Oxides. CHEMISTRY & CHEMICAL TECHNOLOGY 2016. [DOI: 10.23939/chcht10.04.387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this study, BaFe1−xAlxO3-δ (0 ≤ x ≤ 0.3) perovskite-type oxides were prepared by sol-gel method using citric acid as chelating agent. The samples were subjected to various calcination temperatures in order to investigate the physicochemical properties of the oxide affected by the parameter. Thermogravimetric analysis, Fourier transform infrared spectroscopy and X-ray diffraction (XRD) techniques are used to explore precursor decomposition and to establish adequate calcination temperature for the preparation of the nano-powders. The studied compounds have hexagonal crystal structure at the temperature of 1123 K. The samples obtained after calcination at 1123 K were characterized by XRD, Brunauer-Emmett-Teller surface area analysis, scanning electron microscopy, powder size distribution and electrical conductivity. The microstructure and morphology of the compounds show that the particles are nearly spherical in shape and are partially agglomerated. The highest surface area and total pore volume are achieved for BaFe0.8Al0.2O3-δ oxide. Temperature dependence of electrical conductivity shows a semiconducting behavior.
Collapse
|