Sequential repetitive chemical reduction technique to study size-property relationships of graphene attached Ag nanoparticle

Title
Sequential repetitive chemical reduction technique to study size-property relationships of graphene attached Ag nanoparticle
Authors
채영규
Keywords
Silver nanoparticles; Nanoparticle growth; Sequential repetitive chemical reduction; Graphene oxide; Antibacterial properties
Issue Date
2015-06
Publisher
ELSEVIER SCIENCE BV
Citation
SOLID STATE SCIENCES, v. 44, Page. 1-9
Abstract
The present study demonstrates a novel, systematic and application route synthesis approach to develop size-property relationship and control the growth of silver nanoparticles (AgNPs) embedded on reduced graphene oxide (rGO). A sequential repetitive chemical reduction technique to observe the growth of silver nanoparticles (AgNPs) attached to rGO, was performed on a single solution of graphene oxide (GO) and silver nitrate solution (7 runs, R1-R7) in order to manipulate the growth and size of the AgNPs. The physicalechemical properties of the samples were examined by RAMAN, XPS, XRD, SEM-EDAX, and HRTEM analyses. It was confirmed that AgNPs with diameter varying from 4 nm in first run (R1) to 50 nm in seventh run (R7) can be obtained using this technique. A major correlation between particle size and activities was also observed. Antibacterial activities of the samples were carried out to investigate the disinfection performance of the samples on the Gram negative bacteria (Escherichia coli). It was suggested that the sample obtained in the third run (R3) exhibited the highest antibacterial activity as compared to other samples, toward disinfection of bacteria due to its superior properties. This study provides a unique and novel application route to synthesize and control size of AgNPs embedded on graphene for various applications. (C) 2015 Elsevier Masson SAS. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S1293255815000795http://hdl.handle.net/20.500.11754/25737
ISSN
1293-2558; 1873-3085
DOI
http://dx.doi.org/10.1016/j.solidstatesciences.2015.03.024
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > BIONANOTECHNOLOGY(바이오나노학과) > Articles
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