The symmetry or structural stability of ABO3-type perovskite oxides depends largely on the size ‘A’ and ‘B’ cations, which determines material properties. partial substitution these cations may be used to tune ionic sizes valence states play an important role in improving properties perovskite. In this study, La3+ with Sr2+ a larger radius Mn3+ Fe3+with similar favored both crystal mixed ionic–...

Pulsed laser deposition has been used to grow nanostructured BaCe0.85Y0.15O3films. The objective is to enhance protonic conduction by reduction of membrane thickness. Sintered samples and laser targets were prepared by sintering BaCe0.85Y0.15O3powders derived by solid state synthesis. Films 2 to 6 μm thick were deposited by KrF excimer laser on Si and porous Al2O3 substrates. Nanocrystalline fi...

Thermochemical splitting of CO2 and H2O via two-step metal oxide redox cycles offers a promising approach to produce solar fuels. Perovskite-type oxides with the general formula ABO3 have recently gained attention as an attractive material alternative state-of-the-art ceria, due their high structural thermodynamic tunability. A novel Ce-substituted lanthanum strontium manganite perovskite-oxide...

Perovskite oxides, with an ABO3 general formula, have attracted much attention as effective peroxymonosulfate (PMS) activators because of their composition adjustability and chemical stability. A doping strategy has been applied to enhance the PMS activation capability modulation crystal structure parent LaCoO3-δ perovskite by substituting Co atoms located at B-site, high valence state transiti...

Segregation and phase separation of aliovalent dopants on perovskite oxide (ABO3) surfaces are detrimental to the performance of energy conversion systems such as solid oxide fuel/electrolysis cells and catalysts for thermochemical H2O and CO2 splitting. One key reason behind the instability of perovskite oxide surfaces is the electrostatic attraction of the negatively charged A-site dopants (f...

The site incorporation mechanism of M dopants into ABO3 perovskites controls the overall defect chemistry and thus their transport properties. For charge balance reasons, incorporation onto the A site would require the creation of negatively charged point defects, such as cation vacancies, whereas incorporation onto the B site is accompanied by the generation of positively charged defects, typi...

The crystal structure of tetra-wickmanite, ideally Mn(2+)Sn(4+)(OH)6 [mangan-ese(II) tin(IV) hexa-hydroxide], has been determined based on single-crystal X-ray diffraction data collected from a natural sample from Långban, Sweden. Tetra-wickmanite belongs to the octa-hedral-framework group of hydroxide-perovskite minerals, described by the general formula BB'(OH)6 with a perovskite derivative s...