Polyol Synthesis of Silver Nanowires: An Extensive Parametric Study

2011-11-01
Coskun, Sahin
Aksoy, Burcu
Ünalan, Hüsnü Emrah
Silver nanowires have been synthesized by a polyol process. A detailed parametric study determining the relationship between final morphology of the products and,temperature, injection rate, molar ratio of poly(vinylpyrrolidone) to silver nitrate, sodium chloride amount, and stirring rate is presented. The as-synthesized silver nanowires are analyzed by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The dependency of nano-wire morphology and aspect ratio on synthesis parameters is shown via SEM images. Furthermore, the nanowire diameter is found to decrease with stirring rate, poly(vinylpyrrolidone) to silver nitrate molar ratio, and temperature and to increase with injection rate. The lack of sodium chloride and its presence in excess amounts resulted in the formation of particles with different sizes in addition to nanowires. In addition, poly(vinylpyrrolidone) to silver nitrate molar ratio is found, to affect the morphology of the resulting nanostructure, leading to formation of particles at high and low ends. The results reported in this paper provide a basis for optimizing silver nanowire growth through the self-seeding polyol method.
CRYSTAL GROWTH & DESIGN

Suggestions

Genotoxicity study of high aspect ratio silver nanowires
Charehsaz, Mohammad; COŞKUN, Sahin; Ünalan, Hüsnü Emrah; Reis, Rengin; Helvacioglu, Sinem; GIRI, Ashok Kumar; Aydin, Ahmet (2017-01-01)
The genotoxicity potential of silver nanowires synthesized via the solution-based polyol method has been investigated. They were found to be non-mutagenic in three Salmonella strains and were not genotoxic in a clastogenicity assay in mice. Residual surfactant was found to have an effect on the toxicological properties of the nanowires by increasing the rate of Ag+ release. Residual surfactant can be easily degraded via a UV treatment.
Gold nanostar @ iron oxide core-shell nanostructures: synthesis, characterization, and demonstrated surface-enhanced Raman scattering properties
Nalbant Esentürk, Emren (2013-01-01)
Iron oxide-coated gold nanostars are produced by first synthesizing gold nanostars (ca 150 nm), then introducing a polyvinylpyrollidone coating followed by reducing iron(II) and iron(III) salts on the nanoparticle (NP) surface. Morphological and chemical composition characterizations of these composite nanomaterials were performed via field-emission transmission electron microscopy/energy dispersive spectroscopy studies. The analysis revealed that the majority of the NPs had coating of approximately 1-5 nm ...
Biological and green synthesis of silver nanoparticles
Forough, Mehrdad; Khalil, Farhadi (2010-12-01)
In this work, the synthesis of stable silver nanoparticles by the bioreduction method was investigated. Aqueous extracts of the manna of hedysarum plant and the soap-root (Acanthe phylum bracteatum) plant were used as reducing and stabilizing agents, respectively. UV-Vis absorption spectroscopy was used to monitor the quantitative formation of silver nanoparticles. The characteristics of the obtained silver nanoparticles were studied using X-ray diffraction analysis (XRD), energy-dispersive spectroscopy (ED...
Gold nanowires with high aspect ratio and morphological purity: Synthesis, characterization, and evaluation of parameters
Dertli, Elcin; Coskun, Sahin; Nalbant Esentürk, Emren (2013-01-01)
In this study, gold (Au) nanowires were synthesized with a modified hydrothermal process, and high structural purity and control over Au nanowire diameter were achieved. Parametric study was performed to examine the effect of surfactant concentration, reaction time, and temperature on the quality of the synthesized products. The optimum conditions were determined for the synthesis with two different surfactant molecules, namely hexamethylenetetramine and ethylenediaminetetraacetic acid. Au nanowires synthes...
Collagen/gold nanoparticle nanocomposites: A potential skin wound healing biomaterial
Akturk, Omer; Kismet, Kemal; Yasti, Ahmet C.; Kuru, Serdar; Duymus, Mehmet E.; Kaya, Feridun; Caydere, Muzaffer; Hucumenoglu, Sema; Keskin, Dilek (2016-08-01)
In this study, nanocomposite collagen scaffolds incorporating gold nanoparticles (AuNPs) were prepared for wound healing applications. Initially, dose (<20ppm) and size (>20nm) of AuNPs that were not cytotoxic on HaCat keratinocytes and 3T3 fibroblasts were determined. Both collagen sponges and AuNP-incorporated nanocomposites (CS-Au) were cross-linked with glutaraldehyde (CS-X and CS-AuX). Incorporation of AuNPs into cross-linked scaffolds enhanced their stability against enzymatic degradation and increase...
Citation Formats
S. Coskun, B. Aksoy, and H. E. Ünalan, “Polyol Synthesis of Silver Nanowires: An Extensive Parametric Study,” CRYSTAL GROWTH & DESIGN, pp. 4963–4969, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39859.