Sol–gel preparation and characterization of antibacterial and self-cleaning hybrid nanocomposite coatings / Seyed Armin Zare Estekhraji in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 6 (11/2017) . - p. 1335-1343 Titre : Sol–gel preparation and characterization of antibacterial and self-cleaning hybrid nanocomposite coatings Type de document : texte imprimé Auteurs : Seyed Armin Zare Estekhraji, Auteur ; Sahar Amiri, Auteur Année de publication : 2017 Article en page(s) : p. 1335-1343 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antibactériens Dioxyde de silicium Dioxyde de titane Matériaux hybrides Oxyde de zinc Revêtement auto-nettoyant Sol-gel, Procédé Index. décimale : 667.9 Revêtements et enduits Résumé : ZnO–TiO2, SiO2–TiO2, and SiO2–TiO2–ZnO hybrid nanocomposite coatings were synthesized based on sol–gel precursors including tetramethoxysilane (TMOS), 3-glycidoxypropyl trimethoxysilane (GPTMS), tetra(n-butyl orthotitanate) (TBT), and zinc acetate dihydrate. The hybrid network was characterized by FTIR, FESEM, and EDAX techniques. Results indicated that inorganic particles’ size was of nanoorder (20–30 nm), with very uniform distribution and dispersion. Photocatalytic and self-cleaning activities of these coatings were further investigated by degradation of methylene blue in an aqueous solution (20 ppm) at visible light irradiation, indicating photocatalytic performance of the coatings containing ZnO and TiO2 nanoparticles. The antibacterial effect of the coatings was investigated for inhibition and inactivation of cell growth, with the results showing the same antibacterial activity for ZnO–TiO2 and SiO2–TiO2–ZnO coatings against Escherichia coli and Staphylococcus aureus; the activity was, however, higher than that of SiO2–TiO2 hybrid nanocomposite coatings. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of SiO2 nanoparticles - Synthesis of TiO2 nanoparticles - Synthesis of ZnO nanoparticles - Preparation of hybrid coatings - Preparation of substrates and coating technique - Characterization - Photocatalytic activity of coatings - Antibacterial efficiency - RESULTS AND DISCUSSION : FTIR results - Morphological and nanoparticle distribution results - Taber Abrasion analysis results - Self-cleaning and photocatalytic activity of coatings - Antibacterial activities of hybrid coatings DOI : 10.1007/s11998-017-9932-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9932-7.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29638 [article]

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