Silver Nanoparticles

Korbekandi, Hassan; Iravani, Siavash

doi:10.5772/34157

Cited by 50 publications

(39 citation statements)

References 145 publications

(173 reference statements)

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“…Various procedures have been developed for the synthesis of metal nanoparticles and nanomaterials including physical, chemical, and biological methods. Numerous reducing agents have been used to reduce metal salts to form metal nanoparticles; for example, tri-sodium citrate [7][8][9] and sodium borohydride [10] are being used for the reduction of gold chloride and silver nitrate solutions to form gold and silver nanoparticles, respectively, for decades. Tannic acid, a plant derived polyphenolic compound [11] (Figure 1), has also been exploited as a reductant of metal salt solutions.…”

Section: Introductionmentioning

confidence: 99%

Reviewing the Tannic Acid Mediated Synthesis of Metal Nanoparticles

Ahmad

2014

Journal of Nanotechnology

128

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Metal nanoparticles harbour numerous exceptional physiochemical properties absolutely different from those of bulk metal as a function of their extremely small size and large superficial area to volume. Naked metal nanoparticles are synthesized by various physical and chemical methods. Chemical methods involving metal salt reduction in solution enjoy an extra edge over other protocols owing to their relative facileness and capability of controlling particle size along with the attribute of surface tailoring. Although chemical methods are the easiest, they are marred by the use of hazardous chemicals such as borohydrides. This has led to inclination of scientific community towards eco-friendly agents for the reduction of metal salts to form nanoparticles. Tannic acid, a plant derived polyphenolic compound, is one such agent which embodies characteristics of being harmless and environmentally friendly combined with being a good reducing and stabilizing agent. In this review, first various methods used to prepare metal nanoparticles are highlighted and further tannic acid mediated synthesis of metal nanoparticles is emphasized. This review brings forth the most recent findings on this issue.

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Section: Introductionmentioning

confidence: 99%

Reviewing the Tannic Acid Mediated Synthesis of Metal Nanoparticles

Ahmad

2014

Journal of Nanotechnology

128

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“…Hence, there is growing interest on alternate reduction agents benign to the environment, and plant extracts containing biomolecule are worthy and viable alternative reducing agent [6]. Kalishwaralal, Deepak, Ramkumarpandian, Nellaiah and Sangiliyandi [7] have used plant extracts to synthesizedhighly stable AgNP (40 nm), the biomolecular interaction with the silver ions contributed to the stable products.…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser Ablation on the Physicochemical Properties of Microwave-Assisted Synthesized AgNP in Aloe Vera (Aloe Barbadensis) Extract

Kassama¹,

Kuponiyi²,

Kukhtareva³

2017

ACES

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Biosynthesis of silver nanoparticles (AgNP) using biomolecular extracts of plant origin is of interest to many researchers because of their potential to produced stable product. It is hypothesized that laser ablation of the AgNP in solution will enhance the biomolecules such as aliphatic amines, alkenes (=C-H), alkanes (C-H), alcohol (O-H) and unsaturatedesters (C-O) in the Nano emulsion. Hence, the objective of this study was to evaluate the effect of laser oblation on the physicochemical properties and stability of AgNP reduced with Aloe vera (Aloe barbadensis). Experiments were conducted with the pre-made AgNP were subjected to the three laser oblation treatments: 1) Control no laser treatment of AgNP, 2) Laser ablation treatment for 5 minutes and 3) Laser ablation treatment for 10 minutes. The results of the analysis show that laser oblation treatment has significant effect (p < 0.01) on the concentration of AgNP. The intensity of the absorption peak significantly (p < 0.01) increases with laser exposure time. While 214 ppm was observed with no laser treatment, 224 and 229 ppm increase of concentration was observed when laser treated for 5 and 10 min. The rates of reaction of restructuring the particles sizes were 0.384, 0.408 and 0.4288 min −1 at different laser exposure treatments times 0, 5 and 10 min, respectively. The FTIR results show significant (p < 0.05) increase in biomolecules concentration of aliphatic amines, alkenes (=C-H), alkanes (C-H), alcohol (O-H) and unsaturatedesters (C-O).

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“…[1][2][3][4][5][6] The properties of AgNPs, eg, their dimensions, distribution, and stability, depend considerably on both the nature of the stabilizing polymeric matrix and the conditions used for nanoparticle formation in the composite. Synthetic (eg, polyvinylpyrrolidone, polyvinyl alcohol) and natural (eg, cellulose, gelatin) polymers can be used as a stabilizing polymeric matrix for AgNPs.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of water-soluble nontoxic polymeric nanocomposites containing silver nanoparticles

Прозорова¹,

Pozdnyakov²,

Кузнецова³

et al. 2014

IJN

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New water-soluble nontoxic nanocomposites of nanosized silver particles in a polymer matrix were synthesized by a green chemistry method. Nontoxic poly(1-vinyl-1,2,4-triazole) was used as a stabilizing precursor agent in aqueous medium. Glucose and dimethyl sulfoxide were used as the silver ion-reducing agents to yield silver nanoparticles 2–26 nm and 2–8 nm in size, respectively. The nanocomposites were characterized by transmission electron microscopy, ultraviolet-visible and Fourier transform infrared spectroscopy, X-ray diffraction, atomic absorption, and thermogravimetric data analysis. The nanocomposites showed strong antimicrobial activity against Gram-negative and Gram-positive bacteria.

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Silver Nanoparticles

Cited by 50 publications

References 145 publications

Reviewing the Tannic Acid Mediated Synthesis of Metal Nanoparticles

Reviewing the Tannic Acid Mediated Synthesis of Metal Nanoparticles

Effect of Laser Ablation on the Physicochemical Properties of Microwave-Assisted Synthesized AgNP in Aloe Vera (Aloe Barbadensis) Extract

Green synthesis of water-soluble nontoxic polymeric nanocomposites containing silver nanoparticles

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