A comparison study of SiO2/nano metal oxide composite sphere for antibacterial application. (15th January 2018)

• Record Type: Journal Article
• Authors: Hou, Yong-Xuan; Abdullah, Hairus; Kuo, Dong-Hau; Leu, Sy-Jye; Gultom, Noto Susanto; Su, Chi-Hung
• Is Part Of: Composites. Number 133(2018)
• Page Start: 166
• Page End: 176
• Publication Date: 2018-01-15
• Subjects: Porous silica sphere -- Composite -- Antibacterial powder -- Metal oxides -- Nanoparticles; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2017.09.021
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: High surface area mesoporous SiO2 sphere particles which were separately coated with Ag2 O, Cu2 O, CeO2, and NiO nanoparticles have been synthesized, characterized, 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 /Ag2 O and SiO2 /Cu2 O composites, as compared to those of SiO2 /CeO2 and SiO2 /NiO composites in 3 h. The low-cost SiO2 /Cu2 O composite was found as a great antibacterial material to replace the costly component of Ag2 O in SiO2 /Ag2 O composite. The works on the Ag2 O, Cu2 O, CeO2, and NiO nanoparticles for antibacterial application had been done, however the technique to disperse metal oxide nanoparticles utilizing porous SiO2 carriers for antibacteria has not been evaluated. The comparison among different SiO2 -supported metal oxides is necessary to investigate 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.