Direct synthesis of silver/polymer/carbon nanocables via a simple hydrothermal route

Jin, Mingshang; Kuang, Qin; Jiang, Zhiyuan; Xu, Tao; Xie, Zhaoxiong; Zheng, Lan‐Sun

doi:10.1016/j.jssc.2008.05.034

Cited by 21 publications

(12 citation statements)

References 28 publications

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“…The Ag nanocrystals may act as nucleation centers to adsorb glucose molecules on the surface, and subsequently the glucose polymerized to form a carbonaceous sheath, as reported in the previous studies . Under a hydrothermal reaction, the formation of nanocables could be controlled by a synergistic growth mechanism, where the carbonaceous sheath is responsible for the oriented growth of Ag nanowires; in turn, the silver nanowires act as a backbone on which the carbonaceous sheath could form under the considered hydrothermal conditions.…”

Section: Discussionmentioning

confidence: 57%

Direct Hydrothermal Synthesis of Carbonaceous Silver Nanocables for Electrocatalytic Applications

Chen

Suryanto

Zhao

et al. 2015

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This study demonstrates a facile but efficient hydrothermal method for the direct synthesis of both carbonaceous silver (Ag@C core-shell) nanocables and carbonaceous nanotubes under mild conditions (<180 °C). The carbonaceous tubes can be formed by removal of the silver cores via an etching process under temperature control (60-140 °C). The structure and composition are characterized using various advanced microscopic and spectroscopic techniques. The pertinent variables such as temperature, reaction time, and surfactants that can affect the formation and growth of the nanocables and nanotubes are investigated and optimized. It is found that cetyltrimethylammonium bromide plays multiple roles in the formation of Ag@C nanocables and carbonaceous nanotubes including: a shape controller for metallic Ag wires and Ag@C cables, a source of Br(-) ions to form insoluble AgBr and then Ag crystals, an etching agent of silver cores to form carbonaceous tubes, and an inducer to refill silver particles into the carbonaceous tubes to form core-shell structures. The formation mechanism of carbonaceous silver nanostructures depending upon temperature is also discussed. Finally, the electrocatalytic performance of the as-prepared Ag@C nanocables is assessed for the oxidation reduction reaction and found to be very active but much less costly than the commonly used platinum catalysts. The findings should be useful for designing and constructing carbonaceous-metal nanostructures with potential applications in conductive materials, catalysts, and biosensors.

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Section: Discussionmentioning

confidence: 57%

Direct Hydrothermal Synthesis of Carbonaceous Silver Nanocables for Electrocatalytic Applications

Chen

Suryanto

Zhao

et al. 2015

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“…The side of the wire was covered with a 5-10-nm-thick layer, which consisted of lighter elements compared to Ag. When Ag nanowires were synthesized from AgCl via the hydrothermal method, a layer of graphite and/or polymer coated the obtained Ag nanowires [24]. The layer on the wire in the present study was also considered to be constituted of a carbon-based material, which was elaborated by polymerization of glucose followed by carbonization under hydrothermal conditions.…”

Section: Structure Of Ag Nanowirementioning

confidence: 96%

“…Compared to the hard template method, a procedure using organic directing agents is generally easier and does not need to waste templates; therefore, many researchers have recently reported wet chemical approaches using organic directing agents for the preparation of Ag nanowires. Two examples of this method are the polyol method [14][15][16][17][18][19][20][21] and the hydrothermal method [22][23][24]. In the polyol method, polyols such as ethylene glycol and glycerol are used as reduction agents.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic studies on the formation of silver nanowires by a hydrothermal method

Tetsumoto

Gotoh

Ishiwatari

2011

Journal of Colloid and Interface Science

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“…26 Jin et al synthesized the Ag/polymer/C nanocables using glucose as C precursors. 27 But the growth mechanism is still not very clear. In this article, we show the synthesis of high-aspect-ratio silver/carbon nanocables in the absence of any surfactant substance and using Ag 2 S as catalyst to control the growth of Ag nanowires, a new mechanism was also suggested.…”

Section: Introductionmentioning

confidence: 99%

Surfactant-Free Hydrothermal Synthesis of Ag/C Nanocables

Mu¹,

Liu²,

Wang³

et al. 2012

Mat Express

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A facile method is described here on synthesis of high-aspect-ratio Ag/C core/sheath nanocables via a hydrothermal process in the presence of Ag 2 S and in the absence of any surfactant or polymers. We demonstrate that glucose can act as a reducing reagent and provide carbon source to form a core-shell structure. The S 2− ion plays an important role in controlling the Ag + concentration and then the anisotropic growth of nanocables, and at the same time, the uncoated Ag particles get eroded and reused via Ag 2 S intermediate. The formation of 1D Ag nanowire inner core is attributed mainly to the low growth rate of Ag nanocrystalline nuclei and the later carboncoating protection.

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Direct synthesis of silver/polymer/carbon nanocables via a simple hydrothermal route

Cited by 21 publications

References 28 publications

Direct Hydrothermal Synthesis of Carbonaceous Silver Nanocables for Electrocatalytic Applications

Direct Hydrothermal Synthesis of Carbonaceous Silver Nanocables for Electrocatalytic Applications

Mechanistic studies on the formation of silver nanowires by a hydrothermal method

Surfactant-Free Hydrothermal Synthesis of Ag/C Nanocables

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