Anti-microbial active composite nanoparticles with magnetic core and photocatalytic shell: TiO2–NiFe2O4 biomaterial system

Antimicrobial function of Nd3+-doped anatase titania-coated nickel ferrite composite nanoparticles: A biomaterial system

“…The detailed procedure for the fabrication of TiO 2 coated NiFe 2 O 4 nanoparticles is described elsewhere [21,22]. Here the experimental part concerning the fabrication of Nd 3+ -doped TiO 2 -coated NiFe 2 O 4 nanoparticles is outlined.…”

“…However, we can facilitate this removal if composite particles consisting of a magnetic core and a photocatalytic shell are fabricated. In previous papers [21,22], we reported the synthesis of composite nanoparticles consisting of a photocatalytic titania shell and a nickel ferrite magnetic (NiFe 2 O 4 ) core. The synthesis process involved a combination of the reverse micelle technique and a chemical precipitation process.…”

Magnetic Nanoparticle Carrier for Targeted Drug Delivery: Perspective, Outlook, and Design

“…Routes have been developed to synthesize magnetic nanocrystals for biomedical [5,6] and antimicrobial applications [21,22]. They include a room-temperature reverse micelle process [23][24][25] and a high-temperature decomposition process to make nanoparticles [6].…”

CVD Elaboration of Nanostructured TiO2‐Ag Thin Films with Efficient Antibacterial Properties

“…This includes, for instance, conventional chemical or physical surface cleaning as well as high-technology surface treatments such as silver ion implantation, [9,10] silver composite thin films, [11][12][13] TiO 2 under UV radiation, [14][15][16] polymer films containing triclosan, [17] quaternary ammonium salts, [18,19] and UV-activated core-shell composite nanoparticles which can be sprayed onto solid surfaces, including the human body. [20][21][22] Some major disadvantages of the above solutions are the complexity and the high cost of the fabrication process, as well as the use of UV radiation to activate the anti-bacterial behavior when TiO 2 is involved. [21,23] Triclosan is widely used as anti-microbial agent in various polymers, however it has three major disadvantages: (i) some bacteria resistances have been detected; [24] (ii) it diffuses into the environment, which reduces the long term efficiency of the anti-bacterial effect of the surface; and (iii) it can react with other chemical compounds (e.g., free chlorine in drinking water [25,26] ), which can be dangerous to health.…”

“…Core/ shell TiO 2 -NiFe 2 O 4 composite nanoparticles are an example of this strategy. [20][21][22] The TiO 2 -Ag composite coating is an attractive solution because it combines the anti-bacterial properties of Ag nanoparticles with the photocatalytic activity of the TiO 2 matrix. Furthermore, silver doping can enhance the photocatalytic property of TiO 2 when small quantities are incorporated, [32] or when it is deposited on the surface of the film.…”