Ferromagnetic and Photocatalytic Properties of Layered Perovskite LaBaCo2O6 Nanostructures
Cationic ordered layered tetragonal perovskite phase LaBaCo2O6 (LBCO) nanomaterials with irregular shape, and an average diameter of about 100 nm were successfully prepared. A precursor material was annealed in an argon atmosphere at 1100 °C for 48 hours, and then heat treated in an oxygen atmosphere pressure at 800 °C for 12 hours. The resulting LBCO nanomaterials show ferromagnetic transition at about 175 K without any structural changes. They show metallic behavior at below 140 K, and adopt the behavior of soft ferromagnetic materials at 80 K. Cationic ordered LBCO nanomaterials display photocatalytic activities, as they successfully degrade MB solutions under both UV irradiation and visible light. The B-site cations act as the active center, and are located in the centre of BO6 octahedron units. The various valence states of Co ions in LBCO could contribute to the enhancement of photocatalytic activies.
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Document Type: Research Article
Publication date: January 1, 2016
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