Microorganism-Mediated Fabrication and Antibacterial Performance of Ag/α-Al2O3 Composites
Huimei Chen, Lijuan Zhang, Odoom-Wubah Tareque, Jiale Huang, Huixuan Wang, Mouxing Fu, Daohua Sun and Qingbiao Li
In this paper, Ag/α-Al2O3 compositeswere fabricated from biosynthesized AgNPs, and their antibacterial performanceagainst S.aureus and E. coli were investigated. Ag NPs with sizes 18.0±5.6nm wereproduced through the rapid reduction of [Ag(NH3)2]+with driedCorynebacteriumsp. SH09 assisted by [OH-]. The AgNPswerecompletely immobilized onto α-Al2O3 after calcination at 200 ℃without aggregation. Both the biosynthesized AgNPs and Ag/α-Al2O3 composites exhibited good and rapid antibacterial abilities on S.aureus and E. coli. The Ag/α-Al2O3 composites loaded 1 wt.% Ag killed 100% of E. coliand S.aureusafter contact time of 30 s and 5 min, respectively.
Biosynthesis, silver nanoparticles, microorganism, Corynebacterium sp
eThe Key Lab for Synthetic Biotechnology of Xiamen City, Xiamen University, Xiamen, 361005, P. R. China