Novel Fe2TiO5/reduced graphene oxide heterojunction photocatalyst with improved adsorption capacity and visible light photoactivity: experimental and DFT approach
| Autor: | Abdallah Bouguettoucha, Riadh Bourzami, Abdeltif Amrane, Derradji Chebli, Mohamed Khalil Guediri |
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| Přispěvatelé: | Université Ferhat-Abbas Sétif 1 [Sétif] (UFAS1), Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Directorate General for Scientific Research and Technological Development (DGRSDT) of Algeria, Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Diffuse reflectance infrared fourier transform Scanning electron microscope Health Toxicology and Mutagenesis Oxide 010501 environmental sciences 01 natural sciences DFT law.invention chemistry.chemical_compound Dynamic light scattering law Environmental Chemistry [CHIM]Chemical Sciences Reduced graphene oxide Photocatalysis 0105 earth and related environmental sciences Graphene Heterojunction General Medicine Pollutants elimination Pollution Fe2TiO5 chemistry Chemical engineering 13. Climate action [SDE]Environmental Sciences Adsorption Visible spectrum |
| Zdroj: | Environmental Science and Pollution Research Environmental Science and Pollution Research, Springer Verlag, 2021, 28 (7), pp.8507-8519. ⟨10.1007/s11356-020-11221-0⟩ Environmental Science and Pollution Research, 2021, 28 (7), pp.8507-8519. ⟨10.1007/s11356-020-11221-0⟩ |
| ISSN: | 0944-1344 1614-7499 |
| Popis: | International audience; The design of high-efficiency materials is a major challenge for the degradation of organic pollutants. In this work, type IIp-nheterojunction photocatalyst Fe2TiO5/rGO, with enhanced performance, was successfully prepared through simple process. The Fe2TiO5/rGO composites were prepared by hosting several amounts of reduced graphene oxide (rGO) into pseudobrookite nanocrystals (Fe2TiO5) which were priorly synthesized by a solid-state reaction. The morphology and the properties of the as-prepared composites were characterized through different techniques. The fixation of rGO sheets on Fe(2)TiO(5)was proved using the X-ray diffraction analysis (XRD). The results of the scanning electron microscope (SEM) analysis showed a good mixing of rGO with Fe2TiO5. The X-ray fluorescence (XRF) confirmed the purity of the pristine Fe2TiO5. The dynamic light scattering (DLS) illustrated a strong tendency to aggregation. Ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) analysis was performed to characterize the electronic aspect as the gap and the Urbach energies. Finally, computational density functional theory (DFT) calculations were carried out to confirm the experimental results. The adsorptive and photoactivity of Fe2TiO5/rGO heterojunction photocatalysts were evaluated by methylene blue (MB) degradation under visible light irradiation. The highest MB degradation rate was achieved for Fe2TiO5/rGO(10%)photocatalyst with the highest value of the elimination rate. |
| Databáze: | OpenAIRE |
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