A rapid, high-yield and large-scale synthesis of uniform spherical silver nanoparticles by a microwave-assisted polyol process

Helmlinger, Jens; Heise, Martin; Heggen, Marc; Ruck, Michael; Epple, Matthias

doi:10.1039/c5ra20446a

Cited by 20 publications

(21 citation statements)

References 34 publications

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“…There are many reports on the potential of AgNP production on a large scale using batch reactors . In general, these investigations focus on the optimum parameters in the synthesis processes such as concentration, time, reducing agent, and stabilizer or combination effects with physical treatment such as heating, stirring, or sintering.…”

Section: Future Challengesmentioning

confidence: 99%

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A Review of Silver Nanoparticles: Research Trends, Global Consumption, Synthesis, Properties, and Future Challenges

Syafiuddin

Salmiati

Salim

et al. 2017

J Chinese Chemical Soc

328

176

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Silver nanoparticles (AgNPs) are intensively investigated for their superior physical, chemical, and biological properties. A proper knowledge of these properties is essential to maximizing the potential applications of AgNPs in several areas while minimizing their risks to humans and the environment. This paper aims to critically review AgNPs from the perspectives of research trends, global consumption, synthesis, properties, and future challenges. Generally, AgNPs can be synthesized using three methods, namely physical, chemical, and biological, and the related works as well as their numerous advantages and disadvantages are presented in this review. In addition, AgNPs can be potentially explored for various applications. Future challenges on (AgNP) synthesis, their release into the environment, and scaling up production, as presented in the review, suggest that several potential topics for future works are available to promote a safer and more efficient use of these nanoparticles. Studies on AgNPs in Malaysia have increased since the Malaysian government officially established a directorate for nanotechnology development. This calls for a proper set of policies on AgNPs starting from their production to utilization as well as their effects on various related industries and the environment.

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Section: Future Challengesmentioning

confidence: 99%

“…The study reported that AgNPs can be rapidly synthesized on a large scale (up to 100 mmol/L). Another study also claimed to be able to synthesize about 20 ± 1.3 mg AgNPs from 30 mg silver nitrate dissolved in ethylene glycol and poly( N ‐vinyl pyrrolidone) using a microwave‐assisted process …”

Section: Future Challengesmentioning

confidence: 99%

A Review of Silver Nanoparticles: Research Trends, Global Consumption, Synthesis, Properties, and Future Challenges

Syafiuddin

Salmiati

Salim

et al. 2017

J Chinese Chemical Soc

328

176

View full text Add to dashboard Cite

show abstract

“…Today it is known that the release of Ag + ions is responsible for the observed antibacterial effects. 5 Since oxidation of silver materials in a solution is a surface process, the rate of release of Ag + ions increases as particle size is reduced and thus nanomaterials are commonly used to obtain an intense release.…”

Section: Introductionmentioning

confidence: 99%

110th Anniversary: Nucleation of Ag Nanoparticles in Helical Microfluidic Reactor. Comparison between Microwave and Conventional Heating

Manno

Sebastián

Mallada

et al. 2019

Ind. Eng. Chem. Res.

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The synthesis of silver nanoparticles with small average size and narrow size distribution is a requirement for applications in different fields such as antibacterial or catalysis. Previous studies of nanoparticles synthesis confirm the advantages of combining continuous flow and microwave dielectric heating, given the possibilities that arise regarding control of residence time and localized volumetric heating. In this paper, we present two experimental set-ups to perform the continuous synthesis of silver nanoparticles using microwave heating (MWH) and conventional heating (CH). Experimental and simulated data confirm a different temperature profile along the reactor, being more favorable in the case of MWH. As a result, the nanoparticles synthesized under MWH presented a synthesis yield of 54% and a narrow particle size distribution (19±4.3nm). Furthermore, MWH led to reduced wall fouling by deposition of product material and allowed fast cooling of the product stream, preventing further growth of the nanoparticles.

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“…To address this issue, several approaches have been proposed and continually revised. A combination of physical and chemical approaches was reported to successfully fabricate AgNPs efficiently up to 100 mmol·L −1 [ 40 ]. Another study has shown that the proposed procedure successfully produced about 20 mg AgNPs from 30 mg AgNO 3 dissolved in ethylene glycol and poly( N -vinyl pyrrolidone) [ 41 ].…”

Section: Resultsmentioning

confidence: 99%

Novel Weed-Extracted Silver Nanoparticles and Their Antibacterial Appraisal against a Rare Bacterium from River and Sewage Treatment Plan

et al. 2017

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This is the first investigation to demonstrate the use of biochemical contents present within Cyperus rotundus, Eleusin indica, Euphorbia hirta, Melastoma malabathricum, Clidemia hirta and Pachyrhizus erosus extracts for the reduction of silver ion to silver nanoparticles (AgNPs) form. In addition, the antibacterial capability of the synthesized AgNPs and plant extracts alone against a rare bacterium, Chromobacterium haemolyticum (C. haemolyticum), was examined. Moreover, ultraviolet-visible spectroscopy (UV-vis), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDX) and inductively coupled plasma atomic emission spectroscopy (ICPOES) of the synthesized AgNPs were characterized. The smallest AgNPs can be produced when Cyperus rotundus extracts were utilized. In addition, this study has found that the synthesis efficiencies using all plant extracts are in the range of 72% to 91% with the highest percentage achieved when Eleusin indica extract was employed. All synthesized AgNPs have antibacterial capability against all examined bacteria depending on their size and bacteria types. Interestingly, Melastoma malabathricum and Clidemia hirta extracts have demonstrated an antibacterial ability against C. haemolyticum.

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A rapid, high-yield and large-scale synthesis of uniform spherical silver nanoparticles by a microwave-assisted polyol process

Abstract: Silver nanoparticles, often applied in medical devices and consumer products, can be conveniently prepared by microwave-based synthesis.

Cited by 20 publications

References 34 publications

A Review of Silver Nanoparticles: Research Trends, Global Consumption, Synthesis, Properties, and Future Challenges

A Review of Silver Nanoparticles: Research Trends, Global Consumption, Synthesis, Properties, and Future Challenges

110th Anniversary: Nucleation of Ag Nanoparticles in Helical Microfluidic Reactor. Comparison between Microwave and Conventional Heating

Novel Weed-Extracted Silver Nanoparticles and Their Antibacterial Appraisal against a Rare Bacterium from River and Sewage Treatment Plan

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