Catalytic behavior of electrospinning synthesized La0.75Sr0.25MnO3 nanofibers in the oxidation of CO and CH4

• La0.75Sr0.25MnO3 nanofibers prepared by electrospinning method exhibit high thermal stability and surface area.
• The nanofibers show higher catalytic activity for CO and CH4 than nanoparticles prepared via hydrothermal method.
• The nanofibers could provide more Mn4+ sites and adsorbed surface oxygen.

La0.75Sr0.25MnO3 perovskite nanofibers were successfully synthesized by electrospinning method and structurally characterized. These nanofibers display higher catalytic activities for CO oxidation and CH4 combustion than the nanoparticles prepared by traditional hydrothermal method. The high catalytic activities could be attributed to the large surface areas, pore volumes and excellent thermal stability even under 750 °C calcination. In addition, the nanofibers provide more contents of Mn4+ sites and adsorbed surface oxygen atoms for the dissociation of gaseous O2 on the surface.

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