Development of a novel functional core-shell-shell nanoparticles: From design to anti-bacterial applications

• Published in: Journal of colloid and interface science Vol. 513; pp. 726 - 735
• Main Authors: Bouazizi, Nabil, Bargougui, Radhouane, Thebault, Pascal, Clamens, Thomas, Desriac, Florie, Fioresi, Flavia, Ladam, Guy, Morin-Grognet, Sandrine, Mofaddel, Nadine, Lesouhaitier, Olivier, Le Derf, Franck, Vieillard, Julien
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.03.2018; Elsevier
• Subjects: Ag incorporation; Anti-Bacterial Agents - chemistry; Anti-Bacterial Agents - pharmacology; Antibacterial activity; Bacteria - drug effects; Chemical Sciences; Copper - chemistry; Core-shell-shell; CuO@SiO2; Material synthesis; Metal Nanoparticles - administration & dosage; Metal Nanoparticles - chemistry; Propylamines - chemistry; Silanes - chemistry; Silicon Dioxide - chemistry; Silver - chemistry; Surface chemistry; Antibacterial activity; Material synthesis; Ag incorporation; Core-shell-shell; Surface chemistry; CuO@SiO2; CuO@SiO
• ISSN: 0021-9797; 1095-7103
• DOI: 10.1016/j.jcis.2017.11.074

[Display omitted] This article reports the synthesis and functionalization of a novel CuO@SiO2-APTES@Ag0 core-shell-shell material using a simple and low-cost process. The growth, design strategies and synthesis approach are the key factors for the development of CuO@SiO2-APTES@Ag0 as efficient material with enhanced antibacterial activity. We investigated the morphology, surface charge, structure and stability of our new core-shell-shell by atomic force microscopy, scanning electron microscopy, energy dispersive X-ray, Fourier transform infrared and UV–visible spectroscopies, zeta potential measurements, and differential scanning calorimetry. The covalent surface grafting of APTES (3-(aminopropyl)triethoxysilane) onto CuO@SiO2 involving electrostatic interactions was confirmed. Size measurements and Scanning electron images showed that both APTES grafting and SiO2/Ag shells dropped on the surface of CuO produced structural compaction. UV–Vis spectroscopy proved to be a fast and convenient way to optically detect SiO2 shell on the surface of colloids. Additionally, the Ag-decorated CuO@SiO2-APTES surfaces were found to possess antibacterial activity and thermally more stable than undecorated surfaces. CuO@SiO2-APTES@Ag0 core-shell had antibacterial properties against Gram-positive bacteria making it a promising candidate for antibacterial applications.