A General Synthetic Route to High‐Quality Perovskite Oxide Nanoparticles and Their Enhanced Solar Photocatalytic Activity. Issue 7 (12th January 2023)

• Record Type: Journal Article
• Authors: Amdouni, Wafa; Otoničar, Mojca; Gemeiner, Pascale; Butin, Vincent; Guiblin, Nicolas; Maghraoui‐Meherzi, Hager; Dkhil, Brahim
• Is Part Of: Angewandte Chemie international edition. Volume 62:Issue 7(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-01-12
• Subjects: Nitrate-Based Chemical Bath -- Perovskite Oxides -- Photocatalysis; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202215700
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The main limitations of current methods for synthesizing perovskite oxide (ABO3 ) nanoparticles (NPs), e.g., the high reagent costs and sophisticated equipment, the long time and high‐temperature processing, or multiple post‐processing and thermal treatment steps, hamper their full study and potential application. Here, we use a facile low temperature (50 °C) chemical bath synthesis and only one annealing step to successfully produce high phase purity and crystalline quality nano‐shaped rare‐earth‐based REMO3 NPs (RE=La, Nd, Sm, Gd; M=Fe, Mn, Al). We also show the versatility of this approach by fabricating La0.7 Sr0.3 MnO3 solid solution and non‐RE‐based BiFeO3 perovskite. To assess the potential of the as‐prepared REFeO3 and REMnO3 NPs, they are used for photocatalytic degradation of the norfloxacin antibiotic and show high efficiency. We believe this easy, robust, versatile, and general route for synthesizing ABO3 ‐based NPs can be further explored in the vast perovskite family and beyond. Abstract : Generalization in preparing perovskite oxide nanomaterials with high purity and crystalline quality is crucial to permit their full study and widen their applicative potentials. We provide a generic and robust chemical bath route for synthesizing nano‐shaped rare‐earth‐based REMO3 nanoparticles oxides (RE=La, Nd, Sm, Gd; M=Fe, Mn, Al) by simply changing the desired nitrate salts.