Visible light activity of BaFe1-xCuxO3-δ as photocatalyst for atrazine degradation
| Autor: | Rabab A. Nasr, Tarek S. Jamil, Rose-Noëlle Vannier, H.A. Abbas |
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| Přispěvatelé: | Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2018 |
| Předmět: |
Health
Toxicology and Mutagenesis Wastewater treatment 02 engineering and technology [CHIM.INOR]Chemical Sciences/Inorganic chemistry 010402 general chemistry 01 natural sciences law.invention Catalysis chemistry.chemical_compound law Calcination Atrazine Irradiation Ba1-xCuxFeO3 Photocatalytic degradation Nanomaterials Public Health Environmental and Occupational Health General Medicine 021001 nanoscience & nanotechnology Pollution 0104 chemical sciences Grain growth chemistry Photocatalysis Degradation (geology) 0210 nano-technology Visible spectrum Nuclear chemistry |
| Zdroj: | Ecotoxicology and Environmental Safety Ecotoxicology and Environmental Safety, Elsevier, 2018, Ecotoxicology and Environmental Safety, 163, pp.620-628. ⟨10.1016/j.ecoenv.2018.07.106⟩ Ecotoxicology and Environmental Safety, 2018, Ecotoxicology and Environmental Safety, 163, pp.620-628. ⟨10.1016/j.ecoenv.2018.07.106⟩ |
| ISSN: | 0147-6513 1090-2414 |
| DOI: | 10.1016/j.ecoenv.2018.07.106 |
| Popis: | International audience; Nanosized BaFe1-xCuxO3 powders were prepared using the Pechini method. To limit grain growth and agglomeration, the temperature of calcination was limited to 800 °C. For all samples, the cubic form of BaFeO2.75 was predominant with minor additional phases. Cu doping was found to have a remarkable effect on the structural cubic unit cell parameter as the Cu concentration increased. As shown by XRD,the samples were in the nanometer size range (17–63 nm). However, as the Cu concentration increases, the agglomeration increases with the highest surface area for the BaFe0.95Cu0.05O3 composition, which also displays the highest photocatalytic atrazine degradation. For this sample, more than 90% degradation of atrazine was obtained at the optimum conditions (120 min irradiation under visible light at pH 11 using 0.75 mg of the catalyst). The Atrazine degradation was found to follow the pseudo-order kinetics. GC/MS was used to detect the intermediates and the reaction pathways. All the prepared samples and produced waters at the end of the experiment were found to be nontoxic. |
| Databáze: | OpenAIRE |
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