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Study of phase stability of SrTi0.3Fe0.7O3−δ perovskite in reducing atmosphere: Effect of microstructure
(Elsevier Science, 2019-12-01)
Increasing SOFC electrode's surface area by modification of its microstructure is a well-known technique to reduce electrode polarization resistance. This is because reduced grain size and increased porosity promote diffusion ...
On the novel double perovskites A2Fe(Mn0.5W0.5)O6 (A= Ca, Sr, Ba). Structural evolution and magnetism from neutron diffraction data
(Elsevier Science, 2018-06)
New A2Fe(Mn0.5W0.5)O6 (A = Ca, Sr, Ba) double perovskite oxides have been prepared by ceramic techniques. X-ray diffraction (XRD) complemented with neutron powder diffraction (NPD) indicate a structural evolution from ...
Crystal Growth, Structural Phase Transitions, and Optical Gap Evolution of CH 3 NH 3 Pb(Br 1-x Cl x ) 3 Perovskites
(American Chemical Society, 2019-01)
Chemically tuned inorganic-organic hybrid halide perovskites based on bromide and chloride anions CH 3 NH 3 Pb(Br 1-x Cl x ) 3 have been crystallized and investigated by synchrotron X-ray diffraction (SXRD), scanning ...
Exsolution and electrochemistry in perovskite solid oxide fuel cell anodes: Role of stoichiometry in Sr(Ti,Fe,Ni)O3
(Elsevier Science, 2019-11-01)
The exsolution of metal cations from oxides under reducing fuel conditions results in the formation of surface metallic nanoparticles, which can reduce Solid Oxide Fuel Cell anode polarization resistance. However, the loss ...
Catalytic Properties of Double Substituted Lanthanum Cobaltite Nanostructured Coatings Prepared by Reactive Magnetron Sputtering
(Multidisciplinary Digital Publishing Institute, 2019-04)
Lanthanum perovskites are promising candidates to replace platinum group metal (PGM), especially regarding catalytic oxidation reactions. We have prepared thin catalytic coatings of Sr and Ag doped lanthanum perovskite by ...
Enhanced stability in CH3NH3PbI3 hybrid perovskite from mechano-chemical synthesis: structural, microstructural and optoelectronic characterization
(Nature, 2020-12)
Among the hybrid organic–inorganic perovskites MAPbX3 (MA: methyl-ammonium CH3–NH3+, X = halogen), the triiodide specimen (MAPbI3) is still the material of choice for solar energy applications. Although it is able to absorb ...
How far does the defect tolerance of lead-halide perovskites range? The example of Bi impurities introducing efficient recombination centers
(Royal Society of Chemistry, 2019-03)
One of the key properties of lead-halide perovskites employed in solar cells is the defect tolerance of the materials, in particular regarding intrinsic point defects, which mainly form shallow traps. Considering that high ...
Active potassium niobates and titanoniobates as catalysts for organic sulfide remediation
(Elsevier Science, 2016-02)
Pure (KNbO3) and titanium-substituted (KTi0.1Nb0.9O3 and KTi0.2Nb0.8O3) potassium niobates with perovskite crystalline structures were prepared, characterized and tested as catalysts in the selective oxidation of ...
Selective styrene oxidation on alkaline tantalates ATaO3 (A = Li, Na, K) as heterogeneous catalysts
(Elsevier Science, 2019-01-19)
A series of alkaline tantalates (LiTaO3, NaTaO3, KTaO3) prepared using citrate method were characterized by powder X-ray diffraction, nitrogen adsorption isotherms, Fourier transform infrared spectroscopy, diffuse reflectance ...
Ab Initio Study of the Electronic Structure, Elastic Properties, Magnetic Feature and Thermodynamic Properties of the Ba2NiMoO6 Material
(Springer/Plenum Publishers, 2018-05)
We report first-principles calculations of the elastic properties, electronic structure and magnetic behavior performed over the Ba2NiMoO6 double perovskite. Calculations are carried out through the full-potential linear ...