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Download fileCalixarene Assisted Rapid Synthesis of Silver-Graphene Nanocomposites with Enhanced Antibacterial Activity
journal contribution
posted on 2016-07-05, 00:00 authored by Suela Kellici, John Acord, Arni Vaughn, Nicholas P. Power, David
J. Morgan, Tobias Heil, Sébastien P. Facq, Giulio I. LamprontiDemonstrated herein
is a single rapid approach employed for synthesis of Ag–graphene
nanocomposites, with excellent antibacterial properties and low cytotoxicity,
by utilizing a continuous hydrothermal flow synthesis (CHFS) process
in combination with p-hexasulfonic acid calix[6]arene
(SCX6) as an effective particle stabilizer. The nanocomposites showed
high activity against E. coli (Gram-negative) and S. aureus (Gram-positive) bacteria. The materials were characterized
using a range of techniques including transmission electron microscopy
(TEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy,
UV–vis spectrophotometry, FT-IR, and X-ray powder diffraction
(XRD). This rapid, single step synthetic approach not only provides
a facile means of enabling and controlling graphene reduction (under
alkaline conditions) but also offers an optimal route for homogeneously
producing and depositing highly crystalline Ag nanostructures into
reduced graphene oxide substrate.
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Keywords
spectrophotometryphotoelectronXPSNanocompositegraphene oxide substratecoliacidCalixarene Assisted Rapid Synthesishydrothermal flow synthesiscalixcombinationtechniquenanocompositeAg nanostructuresSCXapproachRamanaureusspectroscopyXRDmaterialgraphene reductionCHFShexasulfonictransmission electron microscopyTEMcytotoxicityparticle stabilizerEnhanced Antibacterial Activity DemonstrateddiffractionUV