Synthesis and characterization of LaNixCo1−xO3: Role of microstructure on magnetic properties

Photothermal catalytic activity of combustion synthesized LaCoxFe1−xO3 (0 ≤ x ≤ 1) perovskite for CO2 reduction with H2O to CH4 and CH3OH

“…As the partial substitution of Fe by Co increases, we see that the peak intensity decreases and some of the peaks become split, the diffraction peaks shi regularly to the right, because of the greater strength of Fe-O bonding compared with Co-O bonding. 23 Additionally it was observed that the perovskite structure is orthorhombic when the Codoping level is 0, 0.2 or 0.4, however the structures are trigonal for crystals with Co-doping from 0.6 to 1. This suggests that Co-doping changes the lattice structure and x ¼ 0.4-0.6 might be the region that two phases co-existed simultaneously, even we can't see that clearly from the XRD patterns.…”

“…19,20 Perovskites, which have the general formula ABO 3 , are materials of potential owing to their stability, magnetism, crystal structure, electrical conductivity and piezoelectric properties. These advantages give rise to applications in magnetoresistance devices, [21][22][23] as solid electrolytes, 24 as transducers [25][26][27][28] and in catalysis. [29][30][31][32] Many perovskite materials have good response in the ultraviolet region.…”

Influence of Cobalt Substitution in LaNiO₃ Nanoperovskite on Catalytic Propylene Oxidation

“…The perovskite-type LaBO 3 (B = transition element) presents very interesting physical properties. They exhibit an array of applications in microelectronics, conductive electrodes, micro-actuators, piezoelectric energy harvesters, magneto electronics, sensors, magnetic memory devices, solar cells and as catalysts [1][2][3][4][5][6]. The Ln ions support the framework, stabilizes the system.…”

“…In other conditions, preferred distortions orthorhombic, rhombohedral, and to a lesser extent tetragonal, mono, or triclinic perovskites will appear [8]. Although, it is difficult to synthesize these materials in their pure bulk form, due to the stabilization of Ni(III) and either oxygen pressure and/or high temperatures of ~950 ºC are necessary [1,2,8,9], it is possible to prepare these perovskite materials comparatively in the pure form either by modified conventional ceramic, co-precipitation, sol-gel, hydrothermal, auto-combustion and also by other modern techniques like pulse laser, spray pyrolysis techniques for thin films. LaNiO 3 and LaCoO 3 have rhombohedrally distorted perovskite structures at room temperature [3,4,[9][10][11].…”

The Effect of Fe and Mn Substitution on Structural and Electrical Properties of LaCoO3 Nanoparticles

“…To overcome the drawbacks in the performance of SOFC, new technical approaches have been in under consideration. Some of the major considerations are to improve the performance of SOFC cathodes that are catalytically active and electrically conductive [2]. In particular, Perovskite structure with rare earth metals (La) and transition metal cations (Mn, Fe, Co, Ni) meet the considerations of SOFC including high electrical conductivity and structural and chemical stability.…”