Preparation and Antibiotic Property of Ag-SiO₂Nanoparticle

Dansyl-Labelled Ag@SiO2 Core-Shell Nanostructures—Synthesis, Characterization, and Metal-Enhanced Fluorescence

“…Then, the obtained nanoparticles were coated with a silica nanolayer in the reaction of tetraethyl orthosilicate to obtain a spherical core-shell using the Stöber method [ 36 ]. This process consists of hydrolysis and then condensation of tetraethyl orthosilicate occurring in the alkaline conditions by the addition of ammonia to the ethanol solution [ 37 ]. The amino-functionalized Ag@SiO 2 nanoparticles were prepared according to the modified procedure described previously to obtain the core-shell magnetic nanomaterial [ 38 , 39 ].…”

One-Pot Synthesis of SiO2@Ag Mesoporous Nanoparticle Coating for Inhibition of Escherichia coli Bacteria on Various Surfaces

“…The silica spheres were prepared using the Stöber method [ 36 ]. Briefly, 170 mL of ethanol, 0.7 mL of DI H 2 O, 1.1 mL of TEOS, and 7.5 mL of NH 4 OH were mixed and stirred for 4 h at 400 rpm in an ambient atmosphere.…”

“…Previously, several studies on Ag NPs impregnated on SiO 2 nanoparticles were reported to understand their effect on antibacterial activity. Kim et al [ 36 ] achieved antibacterial activity applying Ag-SiO 2 nanoparticles using the Stöber process. However, room temperature synthesis of Ag NPs is nearly impossible with an ammonia base.…”

Optical and photocatalytic properties of TiO2/Ag–SiO2 nanocomposite thin films

“…In addition, the metal NPs can capture the photo-generated electrons, leading to the reduction of the recombination rate [13,14]. Therefore, the optical absorption capability and photocatalytic activity of metal particles embedded in SiO 2 NPs, SiO 2 nanofibers [15][16][17] and TiO 2 NPs [9,18] have been investigated widely in the past decades. The photocatalytic efficiency of metal deposited single oxides NPs is still too low, which limit its application in industry domain, along with the easy aggregation [19] and the difficulties in separation and recovery.…”