화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.29, 63-70, September, 2015
DOI10.1016/j.jiec.2015.03.018  Export Citation
Recyclable silver.magnetite nanocomposite for antibacterial application
Pawinee Theamdee1, Boonjira Rutnakornpituk1, 2, Uthai Wichai1, 2, Maliwan Nakkuntod3, and Metha Rutnakornpituk1, 2, †
  • 1Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand
  • 2Center of Excellence in Biomaterials, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand
  • 3Department of Biology, Faculty of Science, Naresuan University, Phitsanulok 65000, Thailand
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Surface modification of magnetite nanoparticle (MNP) with cysteine for efficient conjugation with silver nanoparticle (AgNP) is herein presented. This novel nanocomposite was prepared via a specific binding interaction between thiol groups of cysteine coated on the MNP and the surface of AgNP. Transmission electron microscopy indicated the formation of the nanocomposite with 18.24 nm silver nanoparticles and 8.12 nm magnetite nanoparticles. Energy dispersive spectrometry verified the presence of both Ag and Fe in the nanocomposite. After repetitive adsorption.desorption-washing process, the nanocom-posite retained higher than 90% antibacterial efficiency against Escherichia coli K12 for at least five recycling cycles.
Keywords:Surface modification;Nanocomposite;Magnetite;Silver;Antimicrobial
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