A rapid, straight-forward method for controlling the morphology of stable silver nanoparticles

Ledwith, Deirdre M.; Whelan, Áine M.; Kelly, John M.

doi:10.1039/b702141k

Cited by 166 publications

(100 citation statements)

References 48 publications

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“…This was achieved by a similar method to the above in which the reduction of silver ions by ascorbic acid catalysed by citrate-stabilized silver seeds in the presence of a polymer (here polyvinylpyrrolidone PVP) was carried out in the presence of various concentrations of tri-sodium citrate [9]. It was demonstrated that the colour of the sol could be readily controlled simply by varying the concentration of the citrate salt.…”

Section: Development Of Preparative Methodsmentioning

confidence: 99%

Triangular Silver Nanoparticles: Their Preparation, Functionalisation and Properties

2012

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This paper reports our progress towards developing a reproducible and rapid method to prepare triangular silver nanoplates. The methods are all based on a seed-mediated procedure involving the reduction of silver ions with ascorbic acid in aqueous solution and have variously involved polyvinylalcohol, citrate, and polystyrenesulphonate as modiers. The triangular silver nanoplate sols have well dened local surface plasmon resonances, which can be tuned throughout the visible and near IR. Aspect ratio (the ratio of edge length to thickness) is shown to be a fundamental parameter determining the triangular silver nanoplate sol properties including, the position of their local surface plasmon resonances maxima and suppression of local surface plasmon resonance retardation eects. The high ensemble sensitivities of the triangular silver nanoplate sol local surface plasmon resonance to changes in the surrounding refractive index within the spectral range appropriate for biosensing is attributed to their high aspect ratio. Silver nanoparticles are more challenging to functionalise than the analogous gold systems, as they are prone to oxidation and are susceptible to degradation by chloride ions. Two methods to stabilise triangular silver nanoplates (treating with thiols and coating with gold) and the formation of gold nanoboxes from the triangular silver nanoplates are also described.

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Section: Development Of Preparative Methodsmentioning

confidence: 99%

Triangular Silver Nanoparticles: Their Preparation, Functionalisation and Properties

2012

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“…Changes in GO/Ag mass ratio results in displacement of peak maximum. There is a general agreement that the shift of absorption maximum can be related to changes in size and/or shape of synthesized particles [20]. Fig.…”

Section: Resultsmentioning

confidence: 58%

Influence of Experimental Conditions on Deposition of Silver Nanoparticles Onto Surface of Graphene Oxide / Wpływ Warunków Eksperymentalnych Na Proces Osadzania Nanocząstek Srebra Na Powierzchni Tlenku Grafenu

Wojnicki¹,

Mania²,

Marzec³

et al. 2015

Archives of Metallurgy and Materials

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Present work describes the influence of silver nanoparticles precursor form as well as the impact of graphene oxide initial concentration on deposition of the silver nanoparticles onto graphene oxide. Borane dimethylamine complex (DMAB) was used as the reducing agent. It was observed that application of silver ammonia complexes as the silver nanoparticles precursor as well as alkaline solution effect in higher quantity of deposited AgNPs in comparison to deposition process with the use of silver(I) nitrate in acidic solution.

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“…Many reports have proposed the use of temperature for controlling the size and morphology of silver nanoparticles in one-or two-step processes, and nanocubes, nanoplates and nanoprisms are some of the most common morphologies obtained [2,24,[33][34][35][36]. Only a small amount of work has been performed using temperature and irradiation simultaneously to control the size and morphology of silver decahedrons.…”

Section: Temperaturementioning

confidence: 99%

“…For example, Murphy et al [23] used silver (gold) seed intermediates to synthesise silver (gold) nanorods in a cetyltrimethylammonium bromide (CTAB) solution. Ledwith et al [24] used silver seeds to produce triangular platelets of different sizes by controlling the concentration of sodium citrate as well as the temperature of the synthesis [24]. Dong et al showed that controlling the pH of the reaction solution permits the control of the size and morphology of silver nanoparticles [25].…”

Section: Introductionmentioning

confidence: 99%

Temperature and amino acid-assisted size- and morphology-controlled photochemical synthesis of silver decahedral nanoparticles

Cardoso-Ávila

Pichardo‐Molina

Kumar

et al. 2012

Journal of Experimental Nanoscience

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Stable silver decahedron nanoparticles were produced under the blue light irradiation (lightemitting diodes) of a modified precursor solution that has been previously reported. To improve the formation of the nano-decahedrons under blue light, we proposed the use of amino acids with electrically charged side chains (L-arginine, L-lysine and L-histidine). Our results show that L-arginine and L-lysine are best suited to improve the yield of the decahedrons. We also followed the kinetics of the photochemical synthesis under different irradiance conditions of 80, 50 and 15 mW/cm 2 . The maximum irradiance, 80 mW/cm 2 , resulted in a synthesis that was twice as fast as those associated with lower irradiances, and the corresponding decahedron yield was higher. The optimal temperature of the precursor solution for the improvement of the photochemical synthesis of silver decahedrons with Triton X-100 as a surfactant was also determined.

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A rapid, straight-forward method for controlling the morphology of stable silver nanoparticles

Cited by 166 publications

References 48 publications

Triangular Silver Nanoparticles: Their Preparation, Functionalisation and Properties

Triangular Silver Nanoparticles: Their Preparation, Functionalisation and Properties

Influence of Experimental Conditions on Deposition of Silver Nanoparticles Onto Surface of Graphene Oxide / Wpływ Warunków Eksperymentalnych Na Proces Osadzania Nanocząstek Srebra Na Powierzchni Tlenku Grafenu

Temperature and amino acid-assisted size- and morphology-controlled photochemical synthesis of silver decahedral nanoparticles

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