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Microorganism-Mediated Fabrication and Antibacterial Performance of Ag/α-Al2O3 Composites

Author(s): Huimei Chen, Lijuan Zhang, Odoom-Wubah Tareque, Jiale Huang, Huixuan Wang, Mouxing Fu, Daohua Sun, Qingbiao Li.

Abstract:

In this paper, Ag/α-Al2O3 composites were fabricated from biosynthesized AgNPs, and their antibacterial performance against S. aureus and E. coli was investigated. Ag NPs with sizes 18.0±5.6 nm were produced through the rapid reduction of [Ag(NH3)2]+with dried Corynebacterium sp. SH09 assisted by [OH-]. The AgNPs were completely immobilized onto α-Al2O3 after calcination at 200 oC 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. coli and S. aureus after contact time of 30 s and 5 min, respectively.

Keywords: Biosynthesis, Corynebacterium sp., microorganism, silver nanoparticles.

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Article Details

VOLUME: 10
ISSUE: 2
Year: 2014
Page: [271 - 276]
Pages: 6
DOI: 10.2174/15734137113096660108
Price: $58