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Preparation of antibacterial Ag/α-Al2O3 composites assisted by microbial reduction
CHEN Huimei 1,ZHANG Lijuan 2,Tareque Odoom-Wubah 2,WANG Huixuan 2,FU Mouxing 2,SUN Daohua 2,HUANG Jiale 2 *,LI Qingbiao 2 #
1. Environmental Science Research Center, College of the Environment & Ecology, Xiamen University, Xiamen, 361005
2.Department of Chemical and Biochemical Engineering, and National Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, and Key Lab for Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005
*Correspondence author
#Submitted by
Subject:
Funding: the Research Fund for the Doctoral Program of Higher Education of China (No.Grant Nos. 20100121110032 and 20110121120018), the NSF–Fujian(No.2010J05032), the Fundamental Research Funds for Central Universities(No.Grant No. 2010121051), the NSFC(No.Project Nos. 21106117, 21036004, and 20976146)
Opened online:30 May 2013
Accepted by: none
Citation: CHEN Huimei,ZHANG Lijuan,Tareque Odoom-Wubah.Preparation of antibacterial Ag/α-Al2O3 composites assisted by microbial reduction[OL]. [30 May 2013] http://en.paper.edu.cn/en_releasepaper/content/4544696
 
 
In this paper, Ag/α-Al2O3 composites were fabricated from biosynthesized AgNPs, and their antibacterial performance against S. aureus and E. coli were investigated. Ag NPs with the size of 18.0±5.6 nm was 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℃ 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; silver nanoparticles; microorganism;Corynebacterium sp.
 
 
 

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