Synthesis, characterization and application of nanomaterial
Synthesis, characterization and application of nanomaterial
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Date
2026-02-05
Auteurs
DOUMI Bouthaina
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Éditeur
Université Oran1
Résumé
This thesis reports the successful synthesis of various nanomaterials using simple, low-cost methods for multifunctional applications. Silica nanoparticles and a zinc-doped silica nanocomposite were prepared and effectively used for methylene blue adsorption, with removal efficiencies exceeding 85%. The incorporation of zinc also enhanced the materials by providing strong antibacterial properties against both Gram-positive and Gram-negative bacteria, as well as fungi. Furthermore, zinc–iron layered double hydroxides and their derived materials were synthesized and showed excellent photocatalytic performance, achieving up to 95% degradation of crystal violet dye under visible-light irradiation. Overall, all prepared nanomaterials demonstrated notable antimicrobial activity against both Gram-positive and Gram-negative bacterial strains.
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Mots-clés
silica nanoparticles; layered double hydroxide; characterization; adsorption; photocatalysis; antimicrobial activity; regeneration; wastewater treatement; methylene blue; crystal violet