Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/85745
Type: Artigo de periódico
Title: Structural And Morphological Investigations Of β-cyclodextrin-coated Silver Nanoparticles
Author: Andrade P.F.
de Faria A.F.
da Silva D.S.
Bonacin J.A.
Goncalves M.D.C.
Abstract: This paper describes the synthesis of silver nanoparticles using an aqueous silver nitrate solution in the presence of glucose as a reducing agent, sodium hydroxide as a reaction catalyst and β-CD as a stabilizer. The structure and the morphology associated to the stabilizing layer around the silver nanoparticles were investigated. Raman spectroscopy confirmed the nanoparticle surface modification by β-CD, demonstrating the interaction between the β-CD rim hydroxyl groups and the AgNP surface. Transmission electron microscopy images showed an average 28.0. nm diameter pseudo-spherical nanoparticles. Apart from this, a novel characterization of the β-CD layer surrounding the nanoparticles was carried out by using complementary analytical electron microscopy based on electron spectroscopy imaging in the transmission microscope. Mapping images revealed the presence of carbon and oxygen, demonstrating the existence of a uniform and interacting β-CD layer covering the nanoparticles. The antibacterial activity was also investigated and the β-CD-coated silver nanoparticles showed a promising bactericidal activity against the microorganism Escherichia coli. © 2014 Elsevier B.V.
Editor: Elsevier
Rights: fechado
Identifier DOI: 10.1016/j.colsurfb.2014.03.032
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84900824793&partnerID=40&md5=59363adb1a255079f729c68bec0306f3
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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