Highlights Magnetic composite embedding magnetite particles in silica/titania network. Adhesion of chitosan-stabilized gold nanoparticles to silica/titania surface. Porous and high surface area material containing gold nanoparticles as antimicrobial agent. Efﬁcient and reusable antimicrobial system against E. coli bacteria. ● ● ● ● Keywords Core shell Magnetic composite Spherical metal nanoparticles Hybrid structure SiO /TiO mixed oxide 2 2 1 Introduction biocompatibility, and low toxic effect even in relatively high concentration [7, 8, 24]. Compared to silver nano- Bacterial infections are continuously threatening human particles, the most used antimicrobial metal in the nano- health, especially those resistant to drugs and conventional particle form, the AuNP produce less reactive oxygen antimicrobials . Escherichia coli is an enterobacteriaceae species , which affords its low toxicity to mammalian which can be an innocuous resident of the gastrointestinal cells, however should lead to an inferior antimicrobial tract while some strains are related to infections in humans performance. Even so, it is known now that the AuNP can and animals, mostly acquired by poor sanitation, food present other means of bacteria killing, such as generation outbreaks, and contaminated waters [2–4]. Because E. coli of holes in the cell wall, and binding to the DNA to
Journal of Sol-Gel Science and Technology – Springer Journals
Published: Jun 1, 2018
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