Synthesis of Cysteine Capped Silver Nanoparticles by Electrochemically Active Biofilm and their Antibacterial Activities

Title
Synthesis of Cysteine Capped Silver Nanoparticles by Electrochemically Active Biofilm and their Antibacterial Activities
Author(s)
조무환이진태칸모하마드만숩샤피어칼라틸
Keywords
GRAM-NEGATIVE BACTERIA; ESCHERICHIA-COLI; GREEN SYNTHESIS; MICROORGANISMS; PARTICLES
Issue Date
201208
Publisher
KOREAN CHEMICAL SOC
Citation
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.33, no.8, pp.2592 - 2596
Abstract
Cysteine capped silver nanoparticles (Cys-AgNPs) have been synthesized by employing electrochemically active biofilm (EAB), AgNO3 as precursor and sodium acetate as electron donor in aqueous solution at 30 C. Cys-AgNPs of 5-10 nm were synthesized and characterized by UV-Vis, FT-IR, XRD and TEM. Capping of the silver nanoparticles with cysteine provides stability to nanoparticles by a thiolate bond between the amino acid and the nanoparticle surface and hydrogen bonding among the Cys-AgNPs. In addition, the antibacterial effects of as-synthesized Cys-AgNPs have been tested against two pathogenic bacteria Escherichia coli (O157:H7) and Pseudomonas aeruginosa (PAO1). The results demonstrate that the as-synthesized Cys-AgNPs can proficiently inhibit the growth and multiplication of E. coli and P. aeruginosa.
URI
http://hdl.handle.net/YU.REPOSITORY/27500http://dx.doi.org/10.5012/bkcs.2012.33.8.2592
ISSN
0253-2964
Appears in Collections:
공과대학 > 화학공학부 > Articles
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