Synergistic effect for efficient catalytic persulfate activation in conducting polymers-hematite sand composites: Enhancement of chemical stability
| Autor: | Abdellah Ait El Fakir, Salaheddine Farsad, Noureddine El Alem, Asma Amjlef, Zakaria Anfar, Abdallah Amedlous, Amane Jada |
|---|---|
| Přispěvatelé: | Université Ibn Zohr [Agadir], Institut de Science des Matériaux de Mulhouse (IS2M), Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Université Hassan II [Casablanca] (UH2MC), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Jada, Amane |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
[CHIM.POLY] Chemical Sciences/Polymers
Conductive polymers 02 engineering and technology 010501 environmental sciences Conjugated system Polypyrrole 01 natural sciences Catalysis Hematite sand (HS) chemistry.chemical_compound Polyaniline Persulfate activation 0105 earth and related environmental sciences chemistry.chemical_classification Conductive polymer [SDE.IE]Environmental Sciences/Environmental Engineering Process Chemistry and Technology [CHIM.CATA] Chemical Sciences/Catalysis Polymer [CHIM.CATA]Chemical Sciences/Catalysis 021001 nanoscience & nanotechnology Persulfate 6. Clean water [CHIM.POLY]Chemical Sciences/Polymers chemistry Chemical engineering Synergistic effect Chemical stability [SDE.IE] Environmental Sciences/Environmental Engineering 0210 nano-technology |
| Zdroj: | Applied Catalysis A : General Applied Catalysis A : General, Elsevier, 2021, 623, pp.118246. ⟨10.1016/j.apcata.2021.118246⟩ Applied Catalysis A : General, 2021, 623, pp.118246. ⟨10.1016/j.apcata.2021.118246⟩ |
| ISSN: | 0926-860X |
| Popis: | International audience; This study explores new chemical strategies for coating the hematite sand (HS) by conductive polymers to enhance the persulfate activation performance. The highest catalytic activity was due to synergistic effect between the HS and the conductive polymers. In fact, conjugated polymers could act as an activator and electronic mediator to promote the conversion of Fe (III) to Fe (II). Hence, both conductive polymers used (polyaniline and polypyrrole) have been found to provide the necessary electron transfer, thanks to their nitrogen atoms located in their conjugated chains. The radical scavenging experiments assessed by electronic paramagnetic resonance indicated that the studied pathways nature was both a radical and non-radical type. Further, it was found that the protective polymer layers prevented metal ion leaching, mitigate catalyst deactivation, enabled pH insensitive persulfate activation, and increased the chemical stability. This work provides a new innovative way to remove multiple pollutants in wastewater |
| Databáze: | OpenAIRE |
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