Effect of Different Mediated Agents on Morphology and Crystallinity of Synthesized Silver Nanowires Prepared by Polyol Process

Satoungar, Mohammad Taghi; Azizi, Hamed; Fattahi, Saeid; Mehrizi, Mohammad Khajeh; Fallahi, Hedieh

doi:10.1155/2016/4354136

Cited by 14 publications

(10 citation statements)

References 27 publications

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“…Consequently, the reaction time following this method is shorter than that of other methods. Finally, in this condition AgNWs with high quality and yield were created by using a mixed solution and FeCl 3 as a mediated agent .…”

Section: Resultsmentioning

confidence: 99%

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Electrospinning of Polylactic Acid/silver nanowire biocomposites: Antibacterial and electrical resistivity studies

et al. 2016

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In this experiment direct electrospinning was used to produce Polylactic acid/silver nanowire (PLA/AgNWs) biocomposite fibers. This method engineered and produced nanofibers with core‐shell structure. Antimicrobial activity was studied using AATCC 100‐1993 test method, and electrical resistivity measurement was performed by four‐point probes. The results showed that nanofibers with core‐shell structures can be successfully produced. Results of antibacterial activity testing of nanofibers against both Staphylococcus aureus, a gram‐positive bacterium, and E. coli, a gram‐negative bacterium, indicated considerable antibacterial properties. Further, the electrical resistivity of nanofiber composites based of PLA/AgNWs was higher than that of pure PLA. POLYM. COMPOS., 39:E65–E72, 2018. © 2016 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

“…After drying AgNWs a powder form was obtained. For TEM characterization, a suspension of AgNWs was prepared by adding deionized water . All solutions used were made from highly pure chemicals, without any moisture.…”

Section: Methodsmentioning

confidence: 99%

Electrospinning of Polylactic Acid/silver nanowire biocomposites: Antibacterial and electrical resistivity studies

et al. 2016

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“…The synthesis process is chemical reduction of Ag ions in the presence of a polymeric capping agent, in which a small amount of suitable salt can facilitate the growth of the silver seeds to the wire shape [9]. Several factors affect the morphology and yield of AgNWs, including reagent concentration, rate of reagent addition, preparation of the silver ion solution, capping agent molecular weight, type of salt, type and power of stirring, reactor volume in batch synthesis, and residence time in flow synthesis [59][60][61][62][63][64][65][66][67][68][69].…”

Section: Polyol Synthesis and Characterization Of Agnwsmentioning

confidence: 99%

“…Satoungar et al investigated the effect of several mediation agents (FeCl 2 , FeCl 3 , and AlCl 3 ) on the morphology of AgNWs through the use of 1,2-propandiol and EG as a solvent and a reducing agent. They showed that Clions are responsible for electrostatic stabilization and AgCl colloid formation in the initial stage of silver seed formation [68].…”

Section: Effect Of the Salt Mediator In The Polyol Synthesis Ofmentioning

confidence: 99%

Polyol Silver Nanowire Synthesis and the Outlook for a Green Process

Hemmati

Harris

Barkey

2020

Journal of Nanomaterials

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Silver nanowires (AgNWs) have a broad range of applications including nanoelectronics, energy conversion, health care, solar cells, touch screens, sensors and biosensors, wearable electronics, and drug delivery systems. As their characteristics depend strongly on their size and morphology, it is essential to find the optimal and most cost-effective synthesis method with precise control over the size and morphology of the wires. Various methods for AgNW synthesis have been reported along with process optimization and novel techniques to increase the yield and aspect ratios of synthesized AgNWs. The most promising processes for synthesis of AgNWs are wet chemical techniques, in which the polyol process is low cost and simple and provides high yield compared to other chemical methods. Reaction mechanism is one of the most important factors in strategies to control the process. Our purpose here is to provide an overview on the main findings regarding synthesis, preparation, and characterization of AgNWs. Recent efforts in the polyol synthesis of AgNWs are summarized with respect to product morphology and size, reaction conditions, and characterization techniques. The effect of essential factors such as reagent concentration and preparation, temperature, and reaction atmosphere that control the size, morphology, and yield of synthesized AgNWs is reviewed. Moreover, a review on the novel modified polyol process and reactor design such as continuous millifluidic and flow reactors to increase the yield of synthesized AgNWs on large scales is provided. The most recent proposed growth mechanisms and kinetics behind the polyol process are addressed. Finally, comparatively few available studies in green and sustainable development of 1D silver nanostructures through the application of natural products with inherent growth termination, stabilization, and capping characteristics are reviewed to provide an avenue to natural synthesis pathways to AgNWs. Future directions in both chemical and green synthesis approaches of AgNWs are addressed.

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“…To acquire purified AgNWs, the mixture was diluted with acetone, deionized water and ethanol, washed and centrifuged 3 times to remove excess of EG and other reaction product. In the whole reaction, the EG acts as both reducing agent and solvent, surfactants such as PVP could control the growth rates of various faces of silver by coordinating to the surfaces, lead silver to grow into uniform nanowires, FeCl3 as mediated and nucleation agent can react with and remove the adsorbed atomic oxygen from silver surfaces [23,24]. Fig.…”

Section: Experimental Materialsmentioning

confidence: 99%

Electric field-induced Nonlinear I-V Characteristic in a AgNWs/PVA Film Composite

Zhao¹,

Wang²,

Wang³

et al. 2017

Proceedings of the 3rd Annual International Conference on Advanced Material Engineering (AME 2017)

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Abstract. Uniform silver nanowires (AgNWs) were synthesized by a simple chemical reduction method with a typical diameter of ~200 nm and a typical length of ~6 um, and poly(vinyl alcohol)(PVA) aqueous solution was used to prepare AgNWs/PVA film. This combination shows good nonlinear current-voltage(I-V) characteristic under relatively low applied voltage, the resistance of the film decreased strongly with increasing of the applied voltage, and the minimum value of resistance was 520Ω in the whole measurement. The quantum tunneling effect may be the main cause of the nonlinear I-V characteristic of the AgNWs/PVA. [13]. Some progress have been acquired in the study of electrically conductive properties of polymer matrix filling with metal filler, the percolation threshold of wire-like metal filler is lower than nanoparticle filler in the condition of obtaining the same conductivity [14], and wire-like filler with high aspect ratio filling polymer can be decreased than low aspect ratio filler [15]. In this way, the amount of filler can be reduced. Field-induced nonlinear electrically conductive characteristic was observed when the filler volume fraction is close to percolation threshold. Researchers have deserved to study the nonlinear conductive mechanism of composites for decades and proposed that quantum tunneling effect is the cause. Polley et al. proposed that electron "jump" across the gap, with an exponential dependence on gap [16]. Simmons proposed a generalized formula for the electric tunnel effect between similar electrodes separated by a thin insulating film [17]. Ping Sheng et al. suggested that nonlinear conductive mechanism is tunneling with potential-barrier modulation by thermal fluctuations [18]. Beek and Van Pul proposed that electron passage in these systems is due to tunneling, regarded as a special case of internal field emission [19]. Sadie I. White et al. suggested that resistive switching in silver nanowires composites may be the result of the field-induced formation of conducting silver filaments [20]. Nonlinear conductive polymer composites have broad application prospects in electromagnetic protection, integrated circuits, nonvolatile memory, and other fields [21,22]. IntroductionIn this paper, AgNWs were prepared with a typical diameter of ~200 nm and a typical length of ~6 um by simple chemical reduction method. As a important chemical material, poly(vinyl

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Effect of Different Mediated Agents on Morphology and Crystallinity of Synthesized Silver Nanowires Prepared by Polyol Process

Cited by 14 publications

References 27 publications

Electrospinning of Polylactic Acid/silver nanowire biocomposites: Antibacterial and electrical resistivity studies

Electrospinning of Polylactic Acid/silver nanowire biocomposites: Antibacterial and electrical resistivity studies

Polyol Silver Nanowire Synthesis and the Outlook for a Green Process

Electric field-induced Nonlinear I-V Characteristic in a AgNWs/PVA Film Composite

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