Sr0.85Ce0.15Fe0.67Co0.33-xCuxO3 perovskite oxides: effect of B-site copper codoping on the physicochemical, catalytic and antibacterial properties upon UV or thermal activation

• DOI: 10.3389/fenve.2023.1249931
• Publication Date: 2023-09-04T05:30:35Z
• Authors: Maria Laura Tummino; Claudia Vineis; Alessio Varesano; Leonarda Francesc...; Monica Rigoletto; Enzo Laurenti; Francesca Deganello
• Keywords: soot oxidation; 7. Clean energy; 01 natural sciences; 12. Responsible consumption; 0104 chemical sciences; thermocatalysis; antibacterial activity; 13. Climate action; strontium ferrate, codoping, soot oxidation, photocatalysis, thermocatalysis, antibacterial activity; codoping; photocatalysis; strontium ferrate

Perovskite-type compounds have found application in environmental remediation and clean energy production, fundamental sectors for sustainable development. A challenge these materials is the fine-tuning of their chemical composition chemical-physical characteristics, example, microstructure, morphology ability to form oxygen vacancies, through introduction dopant elements. In this work, we studied effect Cu doping at B-site a Ce, Co-doped strontium ferrate perovskite with Sr 0.85 Ce 0.15 Fe 0.67 Co 0.33 O 3-δ . Indeed, 0.23 0.10 0.13 0.20 powders, where was codoped both cobalt copper, were synthesised by solution combustion synthesis characterised physical-chemical properties multi-analytical approach, assess behaviour when subjected different activation methods. The two perovskites tested 1) as catalysts oxidation soot after high temperatures, 2) antibacterial agents ambient conditions or activated UV exposure low-temperature excitation induce generation reactive species. Results demonstrated that react differently various stimuli increasing amount together presence segregated ceria phase, influenced materials’ features performances. knowledge gained on structure-properties relationships can inspire other research studies oxides multifunctional benefit environment, society economy.