The concentration effect of capping agent for synthesis of silver nanowire by using the polyol method

Lin, Jian-Yang; Hsueh, Yu-Lee; Huang, Jung-Jie

doi:10.1016/j.jssc.2013.12.017

Cited by 68 publications

(37 citation statements)

References 27 publications

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“…In fact, the d-values perfectly matched to PDF Number 04-0783 (Silver-3C, syn); also the intensity of the peaks corresponded, except for (111). In the card 04-0783, the (111)/(200) intensity ratio is 2.5, whereas in our pattern was 3.4 indicating the formation of well-elongated AgNWs [25,26]. Minimal trace impurity of AgCl (PDF No.…”

Section: Synthesis and Physicochemical Characterization Of Silver Nancontrasting

confidence: 53%

Sustained Release from Injectable Composite Gels Loaded with Silver Nanowires Designed to Combat Bacterial Resistance in Bone Regeneration Applications

Mori¹,

Hafidh²,

Mele³

et al. 2019

Preprint

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One-dimensional nanostructures such as silver nanowires (AgNWs) have attracted considerable attention owing to their outstanding electrical, thermal and antimicrobial properties; however, their application in the prevention of infections linked to bone tissue regeneration interventions has not yet been explored. Here we report on the development of an innovative scaffold prepared from chitosan, composite hydroxyapatite and AgNWs (CS-HACS-AgNWs) having both bioactive and antibacterial properties. In vitro results highlighted the antibacterial potential of AgNWs against both gram-positive and gram-negative bacteria. The CS-HACS-AgNWs composite scaffold demonstrated suitable Ca/P deposition, improved gel strength, reduced gelation time, and sustained Ag + release within therapeutic concentrations. Antibacterial studies showed that the composite formulation was capable of inhibiting bacterial growth in suspension and of completely preventing biofilm formation on the scaffold in the presence of resistant strains. The hydrogels were also shown to be biocompatible, allowing cell proliferation. In summary, the developed CS-HACS-AgNWs composite hydrogels demonstrated significant potential as a scaffold material to be employed in bone regenerative medicine, as they present enhanced mechanical strength combined with the ability to allow calcium salts deposition, while efficiently decreasing the risk of infections. The results presented justify further investigations into potential clinical applications of these materials.to the bulk materials due to their reduced dimensions, controlled structure and large surface-tovolume ratio [3].One, two, and three-dimensional silver nanostructures have been previously reported, with many studies focusing on silver nanowires (AgNWs). AgNWs are anisotropically grown to obtain an aspect ratio higher than 10 and are typically 10-200 nm in diameter and 5-100 µm in length [2]. To date, silver nanoparticles (AgNPs) have been much more extensively studied than AgNWs, and their distinctive high thermal and electrical conductivity, surface-enhanced Raman scattering, chemical stability, catalytic activity and non-linear optical behavior have been highlighted; as well as their antibacterial activity that has extended their usage into several biomedical fields [4]. They are promising agents against a wide range of fungi, viruses and bacterial species; even though the mechanism of action is still not entirely understood, it is believed that nanosilver serves as a source for Ag + ions that can rupture microbial cell walls, denature proteins, block cell respiration and eventually induce cell death [5]. AgNPs have been used as antimicrobial agents in wound dressing [6], coating of catheters [7] and of cardiovascular implants [8], bone cements [9] and dental materials [10]. Currently literature on biomedical applications of AgNWs is still limited [2]; emerging applications include textiles [11], wound coatings [12], drug release and tissue regeneration [13].In this work, we explore for the first time the...

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Section: Synthesis and Physicochemical Characterization Of Silver Nancontrasting

confidence: 53%

Sustained Release from Injectable Composite Gels Loaded with Silver Nanowires Designed to Combat Bacterial Resistance in Bone Regeneration Applications

Mori¹,

Hafidh²,

Mele³

et al. 2019

Preprint

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“…Briefly, polyol synthesis involves the reduction of a metal salt used as precursor by a polyol, usually ethylene glycol (EG) at an elevated temperature (≈160 °C for EG), and in order to prevent agglomeration of the particles a capping agent commonly used is PVP [4,[43][44][45]. EG (as other polyols) probably oxidizes to aldehyde species with an oxidation potential of 1.65 eV [46].…”

Section: Polyol Methods and Shape-controlled Synthesismentioning

confidence: 99%

Synthetic Routes for the Preparation of Silver Nanoparticles

Pacioni

Borsarelli

Rey

et al. 2015

Engineering Materials

117

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In this chapter, we revise some of the most relevant and widely used synthetic routes available for the preparation of metallic silver nanoparticles. Particular emphasis has been focused in the rationale involved in the formation of the nanostructures, from the early metallic silver atoms formation, passing by atoms nucleation and concluding in the growth of silver nanostructures. We hope the reader will find in this chapter a valuable tool to better understand the relevance of the experimental conditions in the resulting silver nanoparticle size, shape and overall properties.

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“…Based on our previous study [23], we adopted a polyol synthesis of silver nanowires and investigated the effects of various concentrations of PVP on the morphology of the silver nanowire coating surface. The experimental results revealed that an appropriate reduction in concentration of the capping agent allows synthesis of silver nanowires with smaller widths.…”

Section: Resultsmentioning

confidence: 99%

“…Silver nanowires were synthesized via polyol reduction according to procedures reported previously [23]. The synthesis involved the following steps:…”

Section: Methodsmentioning

confidence: 99%

“…The most commonly used capping agent is poly(N-vinylpyrrolidone) (PVP). A previous study has indicated that an appropriate reduction in the concentration of the capping agent enables nanowires 170 nm in width to be synthesized without adding any metal salt as the source of seeds [23]. In this study, we focused on the silver nitrate metal salt precursor by using various concentrations and not adding other metal salts as seed sources.…”

Section: Introductionmentioning

confidence: 99%

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Effect of silver nitrate concentration of silver nanowires synthesized using a polyol method and their application as transparent conductive films

et al. 2015

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The concentration effect of capping agent for synthesis of silver nanowire by using the polyol method

Cited by 68 publications

References 27 publications

Sustained Release from Injectable Composite Gels Loaded with Silver Nanowires Designed to Combat Bacterial Resistance in Bone Regeneration Applications

Sustained Release from Injectable Composite Gels Loaded with Silver Nanowires Designed to Combat Bacterial Resistance in Bone Regeneration Applications

Synthetic Routes for the Preparation of Silver Nanoparticles

Effect of silver nitrate concentration of silver nanowires synthesized using a polyol method and their application as transparent conductive films

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