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Current Nanoscience
ISSN (Print): 1573-4137
ISSN (Online): 1875-6786
VOLUME: 10
ISSUE: 2
DOI: 10.2174/15734137113096660108      Price:  $58









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

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Author(s): Huimei Chen, Lijuan Zhang, Odoom-Wubah Tareque, Jiale Huang, Huixuan Wang, Mouxing Fu, Daohua Sun and Qingbiao Li
Pages 271-276 (6)
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.
Affiliation:
Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, P.R. China.