Composites Part B 133 (2018) 166-176

Sabtu, 12 Mei 2018 13:54 | Sudah dibaca 909 kali

High surface are mesoporous SiO₂ sphere particles which were separately coated with Ag₂O, Cu2O, CeO₂, and NiO nanoparticles have been synthesized, characterizes, and utilized for antibacterial application. The bactericidal effects of the composites were tested toward Staphylococcus aureus in dark or in LED light-illuminated conditions. The results showed the growth of Staphylococcus aureus was greatly inhibited by photocatalytic activities of SiO₂/Ag₂O and SiO₂/Cu₂O composites, as compared to those of SiO₂/CeO₂ and SiO₂/NiO composites in 3 h. The low-cost SiO₂/Cu₂O composite was found as a great antibacterial material to replace the costly component of Ag₂O in SiO₂/Ag₂O composite. The works on the Ag₂O, Cu₂O, CeO₂, and NiO nanoparticles for antibacterial application had been done, however the technique to dispere metal oxide nanoparticles utilizing porous SiO₂ carriers for antibacteria has not been evaluated. The comparison among different SiO₂-supported metal oxides is necessary to inverstigate their feasibilities in real applications. This simple work endeavors to select a great antibacterial material with the characteristics of low cost, abundance, and non toxicity to support wide-scale antibacterial application in future.

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