Alternative Green Chemistry Methods of Silver Nanoparticles Synthesis: Review and Comparison

Fahmy, Heba M.; Saad, Omnia A.; Rashed, Heba A.; Hessen, Omnia E. A.; Elgamal, Khloud H. I.; Aboelfetouh, Mariem M.

doi:10.1166/jbns.2017.1416

Cited by 11 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gold nanoparticles can be an excellent starting point for novel biological and chemical applications due to their easy synthesis and functionalization, good biocompatibility, high surface-to-volume ratio, high extinction coefficients, and powerful distance-dependent optical features [ 19 , 20 ]. Silver nanoparticles present other distinctive characteristics, such as high electrical and thermal conductivity, chemical stability, catalytic activity, size and shape dependence, and non-linear optical behavior [ 21 , 22 ]. However, the most remarkable characteristic of silver nanomaterials is their strong antimicrobial activity [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Antioxidant Capacities of Antarctic Macroalgae and Their Use for Nanoparticles Production

2021

View full text Add to dashboard Cite

Macroalgae are sources of bioactive compounds that are interesting from both a chemical and a medical point of view. Although their use in biomedicine has increased significantly in recent years, tests conducted to date have been mostly related to species from temperate latitudes, with the potential application of Antarctic biodiversity being minor. The wide variety of algae species present on Antarctic coastal areas can be a source of new antioxidants. Bearing this in mind, the brown macroalgae Desmarestia antarctica (DA) and the red Iridaea cordata (IC) were selected for the preparation of aqueous extracts with the aim of analyzing their antioxidant activity. This analysis was performed by determining reducing power, total phenolic content, and 2,2-diphenyl-1-picrylhydrazyl free radical scavenging activity. Furthermore, both extracts were employed to synthesize gold and silver nanoparticles. The nanomaterials were fully characterized by means of UV-Visible spectroscopy, transmission electron microscopy, Z potential measurements, and Fourier transform infrared spectroscopy, which confirmed the formation of stable, spherical nanoparticles with mean diameters of 13.7 ± 3.1 and 17.5 ± 3.7 nm for Ag@DA and Ag@IC and 12.6 ± 1.9 and 12.3 ± 1.6 nm for Au@DA and Au@IC. Antioxidant assays were performed after the synthesis of the nanomaterials to evaluate their possible synergistic effect with the extracts. The results suggest that polysaccharides and proteins may play a key role in the process of reduction and stabilization. Finally, for the sake of comparison, the results obtained for the Antarctic macroalgae Desmarestia menziesii and Palmaria decipiens have also been considered in the present work.

show abstract

Section: Introductionmentioning

confidence: 99%

Evaluation of the Antioxidant Capacities of Antarctic Macroalgae and Their Use for Nanoparticles Production

2021

View full text Add to dashboard Cite

show abstract

“…The study of silver nanoparticles (AgNPs), has undergone a breakthrough in recent decades, mainly due to their optical [1,2] and antimicrobial properties [3][4][5][6]. AgNPs can be prepared by Materials 2020, 13, 503 2 of 17 means of physical, chemical, electrochemical and biological methods [7,8].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Silver Nanoparticles Using Aqueous Leaf Extract of Mimosa albida (Mimosoideae): Characterization and Antioxidant Activity

et al. 2020

View full text Add to dashboard Cite

The search for sensitive and rapid analytical techniques for the determination of natural antioxidants is an area in constant growth due, among other aspects, to the complexity of plant matrices. In this study, silver nanoparticles prepared with the aqueous extract of Mimosa albida leaves were used to assess their polyphenolic content and antioxidant capacity. Silver nanoparticles were characterized by different techniques. As a result, nanoparticles of 6.5 ± 3.1 nm were obtained. The total phenolic content in the extract was 1320.4 ± 17.6 mg of gallic acid equivalents GAE· 100 g−1 and in the nanoparticles 257.3 ± 5.1 mg GAE· 100 g−1. From the phenolic profile analyzed by ultra high-performance liquid chromatography (UPLC) with a diode-array detector (DAD), the presence of apigenin and luteolin in the plant extract is postulated. The antioxidant capacity measured by oxygen radical absorbance capacity ORAC-fluorescein assay was 86917 ± 6287 and 7563 ± 967 µmol ET g−1 in the extract and nanoparticles respectively. Electrochemical analysis by cyclic voltammetry (CV) confirmed the effective reduction capacity of the Mimosa albida leaves extract to reduce Ag ions to AgNPs and differential pulse voltammetry (DPV) suggested the presence of two main reducing agents in the extract. From this study, it was concluded that the aqueous extract of Mimosa albida contains reducing agents capable of synthesizing silver nanoparticles, which can be used in the phytochemical industry.

show abstract

“…Recently, it was found that the spores of bacteria such as Bacillus anthracis on the NS can cause food contamination and contagious diseases [59]. Similarly, a list of autotrophic plants and heterotrophic microbes that help in the Ag NPs formation besides probable mechanisms of nucleation are offered in latest review papers [60][61][62][63]. Such list helps in identifying the crucial factor that induces nanoparticle nucleation.…”

Section: Nano-bacteria and Nano-tubesmentioning

confidence: 99%

Review on Nanomaterial (Nms): Classification, Synthesis by Biological Methods, Sources of Toxic Nps and Health Effects, Toxicity, and Regulations

2023

acad. sci. j.

View full text Add to dashboard Cite

The recent past in the technological development evidenced has evolution in Nanotechnology and nanoscience is the key factor. Nanomaterials (NMs) have gained prominence in technological advancements due to their tunable physical, chemical and biological properties with enhanced performance over their bulk counterparts. NMs are categorized depending on their size, composition, shape, and origin. Due to increased production of NMs and their industrial applications, issues relating to toxicity are inevitable. The review presents an overview of the definitions for the scientific terms and classifications of NMs and gives an overview of the various sources of NPs (nanoparticles) and NMs, natural to synthetic, and their sources of toxic. Additionally, naturally produced nanomaterials with nano-organisms, the health effects and toxicity of nanomaterials were reviewed.

show abstract

Alternative Green Chemistry Methods of Silver Nanoparticles Synthesis: Review and Comparison

Cited by 11 publications

References 0 publications

Evaluation of the Antioxidant Capacities of Antarctic Macroalgae and Their Use for Nanoparticles Production

Evaluation of the Antioxidant Capacities of Antarctic Macroalgae and Their Use for Nanoparticles Production

Synthesis of Silver Nanoparticles Using Aqueous Leaf Extract of Mimosa albida (Mimosoideae): Characterization and Antioxidant Activity

Review on Nanomaterial (Nms): Classification, Synthesis by Biological Methods, Sources of Toxic Nps and Health Effects, Toxicity, and Regulations

Contact Info

Product

Resources

About