Abstract
Structures, morphological control, and antibacterial activity of silver-titanium dioxide (Ag/TiO2) micro-nanocomposite materials against Staphylococcus aureus are investigated in this study. Horizontal vapor phase growth (HVPG) technique was used to synthesize the Ag/TiO2 micro-nanomaterials, with parameters of growth temperature and baking time. The materials were characterized by using scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy, and atomic force microscope (AFM). The result indicated that the HVPG technique is able to synthesize Ag/TiO2 with many shapes in micro- and nanoscale such as nanoparticles, nanorods, triangular nanomaterials, and nanotubes. The results showed that the shape of micro- and nanocomposites material could be arranged by adjusting the parameters. The results revealed that the nanorods structure were obtained at 1000°C growth temperature and that 8 hours of baking time was ideal for antibacterial application. Treating the S. aureus stock with Ag/TiO2 nanocomposites is able to reduce bacterial growth with a significant result.
Highlights
Recent forays into novel developments of medical research have involved nanomaterials as useful tools to combat cancer or bacteria, viruses, and other microbial pathogens [1,2,3,4]
E previous study shows nanocomposite materials successfully synthesized by using Horizontal vapor phase growth (HVPG) technique. is technique offers certain advantages as follows: a large amount of nanocomposites material can be fabricated from the limited amount of powder-form source material, the synthesis occurred at the vacuum condition that minimizes contaminants, and by adjusting baking time and growth temperature, variations of the nanostructures can be Advances in Materials Science and Engineering
E goal of this study is to investigate the structures and morphological behavior of Add 17.5 mg silver (Ag)/TiO2 micronanocomposites materials synthesized by using the HVPG technique. e study evaluated the antibacterial effect of Ag/TiO2 nanocomposite materials against the gram-positive bacterium S. aureus, one of the species that is commonly infectious to humans [35,36,37] with bacterial colonies quantified through the pour plate technique. e micro-nanostructures synthesized from the HVPG technique were evaluated by using scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) to determine the shape of the Ag/TiO2 micro-nanocomposite. e atomic force microscope (AFM) is used to determine the 3D surface roughness of the nanocomposite to explain the geometrical effect of nanocomposite that can eradicate bacteria. e antibacterial testing was conducted by comparing 2 different types of tubes with and without Ag/TiO2
Summary
Recent forays into novel developments of medical research have involved nanomaterials as useful tools to combat cancer or bacteria, viruses, and other microbial pathogens [1,2,3,4]. Nanomaterials based on silver, titanium dioxide, carbon, and graphene have been studied for food packaging process, especially for medical applications such as antipathogenic activity or tissue regeneration [5,6,7,8]. Synthetic silver or Ag/TiO2 nanomaterials have been developed and successfully manufactured by several methods due to the wide applications that are found tremendously in different fields. In the case of synthesized silver-titanium nanocomposite, the research of this material applied in medical and health applications had attracted many researchers. E previous study shows nanocomposite materials successfully synthesized by using HVPG technique. E previous study shows nanocomposite materials successfully synthesized by using HVPG technique. is technique offers certain advantages as follows: a large amount of nanocomposites material can be fabricated from the limited amount of powder-form source material, the synthesis occurred at the vacuum condition that minimizes contaminants, and by adjusting baking time and growth temperature, variations of the nanostructures can be Advances in Materials Science and Engineering
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