Type de document
Études primaires
Année de publication
2025
Langue
Anglais
Titre de la revue
Inorganic Chemistry Communications
Résumé
The current study presents a green, one-step and base-free synthesis of antibacterial ZnO/Zn(OH)2 microporous particles (MPPs) using Melaleuca cajuputi essential oil as a reducing and capping agent. Bioactive compounds, such as eucalyptol and terpineol, included in the essential oil form complexes with Zn2+ from Zn(NO3)2, which undergo hydrolysis into ZnO/Zn(OH)2 MPPs upon the addition of water. Characterization confirms the formation of ZnO/Zn(OH)2 as the primary components, with a minor presence of zinc hydroxynitrate compounds. The synthesized material exhibits a distinctive rod-like morphology with a highly porous structure, favouring the deposition of bioactive compounds on both the surface and within the structure. These compounds play a crucial role in regulating particle morphology by capping the surface, modulating crystal growth, and agglomeration. Simultaneously, adding an appropriate water volume promotes the complete hydrolysis of the Zn2+/bioactive compound complexes, while providing a suitable medium for shaping the formed particles. The optimal sample (prepared with 5 mL water and 15 mL essential oil) achieves 100 % bacterial inactivation within 50 and 70 min against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus epidermidis) bacteria, significantly outperforming commercial ZnO nanoparticles. This enhanced antibacterial performance is due to the synergistic effects of composition, surface chemistry, morphology, and enhanced photocatalytic activity under LED light. These results highlight the potential of eco-friendly synthesized ZnO/Zn(OH)2 MPPs as an effective material for sustainable applications in antimicrobial coatings and active packaging. (©Elsevier)
Mots-clés
Synthèse, Synthesis, Huile essentielle, Essential oil, Oxyde de zinc, Zinc oxide, CAS 1314132, Hydroxyde de zinc, Zinc hydroxide, CAS 20427581, Bactérie, Bacteria
Numéro de projet IRSST
n/a
Citation recommandée
Nguyen, T. H., Vu, N.-N., Ladhari, S., Boisvert, C., Saidi, A., Barnabé, S. et Nguyen-Tri, P. (2025). One-pot green synthesis of ZnO/Zn(OH)2 microporous particles using Melaleuca cajuputi oil for enhanced antibacterial activity. Inorganic Chemistry Communications, 180(Part 2), article 115066. https://doi.org/10.1016/j.inoche.2025.115066