A comparison study of SiO 2 /nano metal oxide composite sphere for antibacterial application

Metal‐Based Nanomaterials in Biomedical Applications: Antimicrobial Activity and Cytotoxicity Aspects

“…[ 311 ] In another study, silica nanoparticles coated with different metal oxides such as Ag 2 O or Cu 2 O have higher antibacterial activity than those coated with Ce 2 O or NiO. [ 312 ] When the antibacterial activity of four nanoparticles containing oxides of Al, Ti, Si, and Zn are compared, ZnO nanoparticles have higher toxicity than SiO 2 and Al 2 O 3 while TiO 2 does not show any toxicity against B. subtilis , E. coli or P. fluorescens . [ 313 ] These examples illustrate that antibacterial potency of different metal oxide nanoparticles differs from one study to another.…”

The Membrane Interactions of Nano-Silica and Its Potential Application in Animal Nutrition

“…It is also added to synthetic rubber, silicone or synthetic resins as a substance, improving their mechanical strength [8]. It was also shown that the Fs used in Aerosil ® preparation has bactericidal properties against many pathogenic microorganisms, including E. coli, Salmonella or Clostridium, especially when modified with silver, gold and titanium ions, and is also used, inter alia, in dressings, feed additives or medicine vectors/carriers [16][17][18][19].…”

Photocatalytic antibacterial activity of copper-based nanoparticles under visible light illumination

“…The great bactericide property was related to the nanoheterostuctures formation between Cu 2 S, CuO, and CuS which formed during annealing process and induced the efficient photo generated electron and hole separation to proceed the formation of ROS which was considerably toxic to bacteria. The observable ability to kill bacteria in dark condition was mainly related to the dissolution of copper ions into solution or to the existing photo carriers which could proceed the photo reaction to oxidize cell membrane of bacteria 1 . Table 1.…”

“…The utilization of antibiotics has been widely known in many applications such as curing for infectious diseases, combating cancer, compromising with immune system to protect human from cancer, preventing diseases, etc. 1 However, the more the antibiotics used, the more possibility the related bacteria will be resistant to it 2 . The mechanisms to protect bacteria from disruptive effect of antibiotics would be developed by altering the antibiotic target sites or metabolism pathway to reduce the drug accumulation from cell.…”

“…It was found copper sulfides and oxides were promising for further investigation to enhance their antibacterial behavior. 1,14 Based on our previous work 1 on SiO 2 /Cu 2 O for antibacterial application, this work simply focused on improving the antibacterial effect of copper oxide and sulfide NPs with annealing treatments at 400 ᵒC for 3 h. The aim of this work is to indicate copper-based materials with low cost and toxicity are promising to be further improved for antibacterial application. The as-prepared CuO and commercially available CuS materials were tested toward Staphylococcus aureus (S.aureus)and Escherichia coli (E.coli)bacteria for respectively representing gram positive and negative strainswith initial bacterial concentration of 10 8 CFU/mL under the dark and the20 W LED light illuminated conditions.…”