Effects of capping agents on the dispersion of silver nanoparticles

Li, Chia‐Chen; Chang, Shinn‐Jen; Su, Fan-Jun; Lin, Shu-Wei; Chou, Yi-Chun

doi:10.1016/j.colsurfa.2012.11.077

Cited by 59 publications

(25 citation statements)

References 33 publications

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“…It is essential to avoid the agglomeration and oxidation of AgNPs so that the analytical inaccuracy can be minimized. For comparison purposes, AgNP sizes obtained from previous studies (including those not discussed in detail here) using different reducing agents and stabilizing or capping agents are summarized in Table …”

Section: Synthesis Of Silver Nanoparticlesmentioning

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

331

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: Synthesis Of Silver Nanoparticlesmentioning

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

331

176

View full text Add to dashboard Cite

show abstract

“…The chemical methods of AgNPs could be regarded as "green" protocol, while mostly performed in aqueous solution [14]. The presence of capping agent is mandatory to inhibit naked Ag(0) particles from agglomeration, control sizes and to provide a platform for further functionalization [15]. Citrate capped AgNPs which are mostly synthesized through utilization of sodium citrate as reducing agents are proven to have high stability and be an effective antibacterial agent on Gram-positive and Gram-negative bacteria [16].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of novel reducing agent for formation of metronidazole-capped silver nanoparticle and evaluating antibacterial efficiency in gram-positive and gram-negative bacteria

Farjadian

Akbarizadeh

Tayebi

2020

Heliyon

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In this study, a new type of silver nanoparticles capped with metronidazolium based ionic liquid is synthesized. By this aim, metronidazole is altered to ionic-liquid type structure with citrate counter ion as reducing agent. The produced reducing agent was characterized using 1 HNMR and 13 CNMR and FT-IR. The capability of metronidazolium-based reducing agent in formation and capping silver nanoparticles was examined in a chemical reaction. More specifically, synthesized silver nanoparticles were synthesized and capped with metronidazoliumcitrate based ionic liquid, while the formation of particles in 48 h was monitored by UV-Vis spectroscopy. Fourier transform infrared spectroscopy showed the presence of capping agents around silver nanoparticles. The amount of metronidazolium and citrate as capping agents was determined by thermal gravimetric analysis. The prepared crystalline structure of silver nanoparticles was proved by X-ray diffraction spectroscopy. PSA analysis and TEM was performed to determine the size of particles. The synthesized silver nanoparticle has the potential to be used as an antibacterial agent in preparation of wound dressing with extra capability and efficacy in aerobic and anaerobic bacterium. In this regard, the antibacterial efficacy of discs from different concentration of silver nanoparticles in calcium alginate medium were evaluated in Gram-negative and Gram-positive bacterium.

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“…citrates [22,28], oleic acid [26], poly(acrylic acid) [29], starch [30] and glutamic acid [31] or prepared with a capping agent that allows binding of other compounds to the nanoparticles such glutathione [32] or tiopronin [33]. Silver nanoparticles of very different geometrical (size and shape) characteristics can be obtained modifying the reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

Biogenic synthesis of antimicrobial silver nanoparticles capped with l-cysteine

Perni

Hakala

Prokopovich

2014

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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The number of medical applications of silver nanoparticles is constantly expanding due to their high bactericidal properties coupled with low toxicity towards mammalian cells. Because of this expanding use of silver nanoparticles, novel methods of synthesis have been developed in order to achieve nanoparticles preparation through inexpensive and environmentally friendly processes; biogenic synthesis of silver nanoparticles is an approach that meets those requirements.In this work, E. coli cultures centrigugates were used to synthesis L-cysteine capped silver nanoparticles. The ratio between AgNO 3 and L-cysteine has been proven to affect the size of the nanoparticles: higher amount of L-cysteine returns smaller nanoparticles, but does not affect the percentage of organic matter in the nanoparticles as determined through TGA.The silver nanoparticles prepared had antimicrobial activity against E. coli and S. aureus with Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) independent of the nanoparticles size; for both bacterial species the values of MIC and MBC were the same, 0.0432 mg/ml for E. coli and 0.0216 mg/ml for S. aureus.

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Effects of capping agents on the dispersion of silver nanoparticles

Cited by 59 publications

References 33 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

Synthesis of novel reducing agent for formation of metronidazole-capped silver nanoparticle and evaluating antibacterial efficiency in gram-positive and gram-negative bacteria

Biogenic synthesis of antimicrobial silver nanoparticles capped with l-cysteine

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