Structures, mechanical properties and antibacterial activity of Ag/TiO2 nanocomposite materials synthesized via HVPG technique for coating application

Abstract

In this study, the structures and mechanical properties of the silver-titanium dioxide nanocomposite material were investigated using Atomic Force Microscopy (AFM). These properties include surface roughness, hardness, and reduced Young's modulus. The nanocomposite material was successfully synthesized using the Horizontal Vapor Phase Growth (HVPG) technique which yielded shapes such as nanoparticles, nanospheres, nanorods, triangular nanocomposites, and nanocrystals. Characterization of nanocomposite materials was done through Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX) spectroscopy to elucidate material shape, diameter, and composition. The pour plate technique combined with McFarland standards was used to evaluate the antibacterial activity of the nanocomposite material against Staphylococcus aureus . The nanocomposite material was able to eradicate bacteria and was suitable for coating applications effectively.

Metal Oxide Nanoparticles Against Bacterial Biofilms: Perspectives and Limitations

“…Moreover, the deposition of Au particles on the surface of ZnO NPs, even at a low molar ratio of ZnO/Au (0.2%), significantly improves the photocatalytic antibacterial activity of ZnO [ 147 ]. Furthermore, Ag-TiO 2 nanocomposite demonstrates antibacterial activity against S. aureus biofilms [ 93 , 148 , 149 ]. It was shown that the inclusion of a 2% composite significantly reduced the formation of biofilms on the surface of the composite resin [ 150 ].…”

A standard method to synthesize Ag, Ag/Ge, Ag/TiO2, SnO2, and Ag/SnO2 nanomaterials using the HVPG technique

“…The results show that by changing curing time and growth temperature, different nanomaterials were produced with different shapes, such as Nanoparticles, Nanorods, Triangular Nanomaterials, and Cotton-like Nanomaterials. The results were then evaluated using SEM-EDX to determine the best shape for different applications such as for anti-bacterial [1,21] and elemental composition. Fig.…”

“…By changing the parameter, the nanomaterial shape can be obtained. Previous study lead by Muflikhun et al [1] show the variation of nanomaterials synthesis from Ag/TiO 2 . The complete results of the nanomaterial shapes are shown in Table 1.…”

Structures, Morphological Control, and Antibacterial Performance of Ag/TiO2 Micro-Nanocomposite Materials

“…e plate was placed on the inoculated plates and then incubated at 37°C for 16-24 hours. e pour plate technique was used to grow the colonies under three different setups: negative control of only the bacterial suspension and two setups with the nanocomposites of 17.5 gram Ag and 17.5 gram TiO 2 [38][39][40].…”