Insights on the various structural, optical and dielectric characteristics of La1-xCaxFeO3 perovskite-type oxides synthesized through solution-combustion technique

Photocatalytic Degradation of Methylene Blue and Ortho-Toluidine Blue: Activity of Lanthanum Composites LaxMOy (M: Fe, Co, Ni)

“…The absorption peak at 567 cm −1 was assigned to the Co-O stretching vibration mode [39] and the 667 cm −1 was assigned to the bridging vibration mode of the O-Co-O bond [40]. For the lanthanum-iron oxide composite (LaFeO 3 ) a band at 542 cm −1 is observed and that can be attributed to an Fe-O stretching vibration being characteristic of the octahedral FeO 6 group in LaFeO 3 [41]. The LaFeO 3 sample was exposed to ambient air, which resulted in the formation of La-carbonate species on the surface, which are assigned to the two bands at 1480 and 1395 cm −1 [42].…”