Search results for "LaFeO3"

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Cu-substituted lanthanum ferrite perovskites: Preparation, characterization and photocatalytic activity in gas-solid regime under simulated solar lig…

2016

Lanthanum orthoferrites LaFeO3 nanopowders doped with 20 mol% of Sr and 0-10-20 mol% of Cu were prepared by citrate auto-combustion synthesis and investigated in terms of crystal structure, morphology, surface area and optical properties by using several characterization techniques. The band gap energy values were found to range from 2.35 eV for LaFeO3 to 1.86 eV for the samples with the highest content of copper, this trend reflects the decrease of the particle size. All powders showed photocurrent response, the highest photocurrent was obtained for undoped orthoferrite calcined at 600°C. Their physical-chemical properties were related to photoelectrochemical behaviour. The the position of…

Materials Chemistry2506 Metals and AlloysMaterials scienceCu(II) substituted LaFeO3; LaFeO3; Perovskite; Photocatalysis;Scanning electron microscopeLanthanum ferrite perovskites photocatalysis solar irradiationMineralogychemistry.chemical_element02 engineering and technology010402 general chemistryPerovskite01 natural sciencessymbols.namesakePhotocatalysiX-ray photoelectron spectroscopyMaterials ChemistryLanthanumMechanics of MaterialPhotocatalysisPhotocurrentMechanical EngineeringMetals and AlloysCu(II) substituted LaFeO3; LaFeO3; Perovskite; Photocatalysis; Mechanical Engineering; Mechanics of Materials; Materials Chemistry2506 Metals and Alloys; 2506Cu(II) substituted LaFeO3021001 nanoscience & nanotechnologyCopper0104 chemical scienceschemistryMechanics of MaterialsPhotocatalysissymbolsDiffuse reflectionSettore CHIM/07 - Fondamenti Chimici Delle Tecnologie25060210 nano-technologyRaman spectroscopyLaFeO3Nuclear chemistry
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Sustainable Recycling of Insoluble Rust Waste for the Synthesis of Iron-Containing Perovskite-Type Catalysts

2019

Insoluble rust waste from the scraping of rusted iron-containing materials represents a cheap, eco-friendly, and available source of iron. LaFeO3 perovskite-type powders were successfully prepared by solution combustion synthesis using rust waste from an electricity transmission tower manufacturer. Solution combustion synthesis enabled introduction of this insoluble iron precursor directly into the final product, bypassing complex extraction procedures. Catalytic activity in the propylene oxidation of the waste-derived LaFeO3 with stoichiometric Fe/La ratio was almost identical to the commercial iron nitrate-derived LaFeO3 , thus demonstrating the viability of this recycling solution. The a…

rust wasteInsoluble rust waste LaFeO3 perovskite solution combustion synthesis propylene oxidationiron catalystsChemistryGeneral Chemical EngineeringFinal productExtraction (chemistry)General ChemistrySolution combustionRustArticleCatalysislcsh:ChemistryChemical engineeringlcsh:QD1-999Binary systemSettore CHIM/07 - Fondamenti Chimici Delle TecnologieStoichiometryPerovskite (structure)
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