Preparation of nano-silver-supported activated carbon
using different ligands
Received: 14 February 2015 / Accepted: 21 May 2015 / Published online: 29 May 2015
Ó Springer Science+Business Media Dordrecht 2015
Abstract In this study, we investigated the effect of water soluble ligands [i.e.,
sodium borohydride (NaBH
), polyvinyl alcohol, glucose and galactose] on the
preparation of nano-silver-supported activated carbon (AC). Ligand-stabilized Ag
nanoparticle dispersion characteristics were also compared with those of ligand-free
Ag nanoparticles. The nanoparticle distribution was investigated using a scanning
electron microscope (SEM) which enabled a qualitative analysis of ligand-depen-
dent nanoparticle adsorption onto AC. Silver nanoparticles with average sizes
ranging from 7 to 20 nm were synthesized with different coatings. In particular,
silver nanoparticles reduced and stabilized by NaBH
were found to have a dense
and homogenous dispersion of sizes in the range of 100–400 nm on the AC surface.
These particles also seemed to remain on the AC surface after rinsing with water.
The distribution of silver nanoparticles prepared in the presence of NaBH
not as good as the one prepared with NaBH
. Their aggregate size varied from 300
to 600 nm on the AC surface and particles greater than 500 nm were eliminated
from the AC surface upon rinsing with water. Glucose- and galactose-stabilized
silver nanoparticles did not display an extensive adsorption and their adsorption
seemed to be poor. However, glucose-stabilized silver nanoparticles could still be
detectable to some extent after rinsing, while galactose-stabilized ones could not.
Antimicrobial studies showed that all silver-containing carbons studied in this study
inhibit bacterial growth and act as bacteriostatic agents.
A part of this work was presented at The 17th International Conference on Nanoscience and
Nanotechnology, The ICNN 2015, Paris, France.
& Nurettin Eltugral
Department of Metallurgical and Materials Engineering, Karabuk University, 78050 Karabuk,
Department of Polymer Engineering, Karabuk University, 78050 Karabuk, Turkey
Res Chem Intermed (2016) 42:1663–1676