Surface characterization and catalytic properties of perovskite type solid oxide solutions, La0.8Sr0.2BO3 (B = Cr, Mn, Fe, Co or Y)

Sol–gel synthesis, X-ray photoelectron spectroscopy and electrical conductivity of Co-doped (La, Sr)(Ga, Mg)O3− perovskites

“…The core and satellite peaks of La 3d 5/2 and La 3d 3/2 were separated by 3.9 eV and the binding energy of the La 3d 5/2 core level was 833.5 eV, a value in good agreement with those reported previously for La 0.8 Sr 0.2 CoO 3 . 22,23 Sr 3d band showed multiple components. A careful fitting procedure allowed identifying four components, namely two 3d 5/2-3/2 doublets with 1.79 eV splitting between 3d 5/2 and 3d 3/2 peaks, a value in excellent agreement with literature data.…”

Characterization of perovskite powders for cathode and oxygen membranes made by different synthesis routes

“…Such a high A-site concentration is also observed on other perovskite powders 3,16,17 and is thought to influence the catalytic activities due to differences in the number of active reaction sites. Among all powders, a much higher Sr content was observed for 5ULSF73-Ci and 3ULSM 2 3 1 3 -Ci.…”

Structure, Dye Degradation Activity and Stability of Oxygen Defective BaFeO<SUB>3&minus;<I>x</I></SUB>

“…Recently, among all compound oxides, transition metal oxides especially ABO 3 perovskite-type oxides have been found to exhibit excellent defect structure, 1) superior catalytic activity, 2) well thermal stability, 3) and some other superior properties such as sensing property 4) and oxygen permeability. 5) With fast development of textile industry, more and more dyes as a persistent organic pollutant in textile waste have seriously jeopardized ecological environment.…”

“…15) Especially for AMO 3 -type (A = alkaline earth metal; M = transition metal atom, such as Ti, Fe and Co) perovskite, oxygen vacancy usually exists. 16) (2) The large atoms at A-site of ABO 3 contribute to the stabilization of multiple valence states of B-site cation. 17) This further benefits the electrons of ABO 3 oxides to be more active and be excited easily by the external energy such as light irradation and transfer easily.…”