Synthesis, characterization, and antibacterial activity of silver-doped silica nanocomposite particles.
J Nanosci Nanotechnol
; 11(1): 90-7, 2011 Jan.
Article
em En
| MEDLINE
| ID: mdl-21446411
ABSTRACT
Silver nanoparticles were adsorbed preferentially on silica surface to form composite particles using a reverse micelle process that stabilizes the silver particles by an anionic sodium bis(2-ethylhexyl) sulfosuccinate (AOT) surfactant in isooctane solvent together with the silica particles in which their surface being mediated by a cationic poly(allylamine hydrochloride) (PAH) polyelectrolyte. The heterogeneous adsorption was rendered by both electrostatic attraction and hydrophilic/hydrophobic interaction, and was carried out in multiple deposition cycles. The resulting nanocomposite particles were characterized by zeta-potential measurement, electron microscopy, X-ray diffractometry, field-emission electron spectroscopy for chemical analysis (ESCA), and inductively coupled plasma analysis, respectively. In addition, antibacterial activity of the composite particles was examined against Escherichia coli (E. coli) in aqueous environment.
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Base de dados:
MEDLINE
Assunto principal:
Prata
/
Dióxido de Silício
/
Nanocompostos
/
Antibacterianos
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article