scholarly journals Green Synthesis of Silver Nanoparticles by Low-Energy Wet Bead Milling of Metal Spheres

Materials ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 63 ◽  
Author(s):  
Andrea Pietro Reverberi ◽  
Marco Vocciante ◽  
Marco Salerno ◽  
Maurizio Ferretti ◽  
Bruno Fabiano
Keyword(s):  
Silver Nanoparticles ◽  
Cost Effective ◽  
Low Energy ◽  
One Pot ◽  
Initial Shape ◽  
Bead Milling ◽  
Metal Precursor ◽  
Aqueous Solvent ◽  
Wet Bead Milling ◽  
Shape And Size

A low-energy, magnetically-driven milling technique for the synthesis of silver nanoparticles is proposed, where the grinding medium and the metal precursor consisting of silver spheres have the same shape and size, belonging to a millimetric scale. The process is carried out at room temperature in aqueous solvent, where different types of capping agents have been dissolved to damp particle agglomeration. The particle diameters, determined by dynamic light scattering and transmission electron microscopy, have been compared with those typical of conventional wet-chemical bottom-up synthesis processes. The use of milling spheres and metal precursor of the same initial shape and size allows to overcome some drawbacks and limitations distinctive of conventional bead-milling equipment, generally requiring complex operations of separation and recovery of milling media. The milling bead/nanoparticle diameter ratio obtained by this approach is higher than that typical of most previous wet bead milling techniques. The method described here represents a simple, one-pot, cost-effective, and eco-friendly process for the synthesis of metal nanoparticles starting from a bulky solid.

scholarly journals BIOFABRICATION OF SILVER NANOPARTICLES USING LEAVES OF GLORIOSA SUPERBA AND ITS ANTICANCER PROPERTIES

2017 ◽  
Vol 10 (11) ◽  
pp. 65 ◽  
Author(s):  
Murali Satyanarayana Bethu ◽  
Venkateswara Rao J
Keyword(s):  
Silver Nanoparticles ◽  
Cell Line ◽  
Cost Effective ◽  
Skov3 Cell ◽  
Gravimetric Analysis ◽  
Gloriosa Superba ◽  
Leaf Extracts ◽  
One Pot ◽  
Anticancer Properties ◽  
Skov3 Cells

  Objective: We aimed to synthesize the cost effective, one pot and an eco-friendly technique for the green synthesis of silver nanoparticles (AgNPs) using 1 mM of silver nitrate (AgNO3) solution through the aqueous leaf extracts of Gloriosa superba (GS) reducing and capping agent and its anticancer activity.Methods: Synthesis briefly 95 mL of 1 mM AgNO3 was taken into amber colored conical flask and added 5 mL of aqueous leaf extract of GS (pale brown) and incubated at room temperature in dark condition for about 24 hrs. Characterization of AgNPs derived from GS (GS-AgNPs) was performed with physiochemical techniques (ultraviolet, transmission electron microscope [TEM], X-ray diffraction [XRD], and thermal gravimetric analysis) and cytotoxicity by 3-(4,5-dimethylthiazo-2-yl)-2,5-diphenyltetrazolium bromide assay.Results: We synthesized cost effective, eco-friendly AgNPs were characterized by physiochemical techniques. The crystal nature of AgNP was studied by XRD. TEM studies reveal the morphology of GS-AgNPs, the size of the nanoparticle is 10-50 nm. The cytotoxicity of GS-AgNPs studied against the four human cancerous cell line DU145, SKOV3, PC3, and A549 but the GS-AgNPs are most sensitive toward the SKOV3 cell line. The minimum inhibitory concentration (IC) is 79.45±5.26, 61.80±4.27, 94.74±9.26, and 90.10±8.24 μg/mL, respectively. Morphological assessment of the SKOV3 cells was studied using AO/EB and Hoechst staining at IC50 concentration.Conclusion: The bio fabrication of the GS-AgNPs were simple, eco-friendly and one pot synthesis, it is used as an anticancer agent in future, pending further investigation.

scholarly journals Green Synthesis of Antimicrobial Silver Nanoparticles using Fruit Extract of Glycosmis Pentaphylla and its Theoretical Explanations.

2021 ◽  
Author(s):  
Tanmoy Dutta ◽  
Swapan Kumar Chowdhury ◽  
Narendra Nath Ghosh ◽  
Mahuya Das ◽  
Asoke P. Chattopadhyay ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Density Functional ◽  
Cost Effective ◽  
Human Pathogens ◽  
Fruit Extract ◽  
One Pot ◽  
Theoretical Simulation ◽  
Vis Spectroscopy ◽  
Average Size

Abstract The present study reports a novel, one-pot, cost-effective, green synthesis route of silver nanoparticles (AgNPs) from the fruit extract of Glycosmis pentaphylla (FGP). The UV–vis spectroscopy (UV-Vis), dynamic light scattering (DLS) and transmission electron microscopy (TEM) studies confirmed that the synthesis produces stable, monodispersed AgNPs with an average size of 17 nm. Theoretical simulation using density functional theory (DFT) established that among the different compounds of FGP, arborine is mainly responsible for the stabilization of AgNPs with a binding energy of 58.45 kJ/mol. Synthesized AgNPs showed strong antifungal and antibacterial activity. The synergistic study of AgNPs with fungicide Bavistin and antibiotic Streptomycin produced remarkable morphological abnormalities of A. alternata as observed under the light microscope. Hence, the AgNPs synthesis approach is a progressive step towards various applications to soon control crop and human pathogens.

Green synthesis of silver nanoparticles using sustainable resources and their use as antibacterial agents: A review

2020 ◽  
Vol 13 ◽  
Author(s):  
Kumari Jyoti ◽  
Punyasloka Pattnaik ◽  
Tej Singh
Keyword(s):  
Silver Nanoparticles ◽  
Plant Extracts ◽  
Metallic Nanoparticles ◽  
Cost Effective ◽  
Biological Properties ◽  
Metal Species ◽  
Sustainable Resources ◽  
Research Areas ◽  
Low Toxicity

Background:: Synthesis of metallic nanoparticles has attracted extensive vitality in numerous research areas such as drug delivery, biomedicine, catalysis etc. where continuous efforts are being made by scientists and engineers to investigate new dimensions for both technological and industrial advancements. Amongst numerous metallic nanoparticles, silver nanoparticle (AgNPs) is a novel metal species with low toxicity, higher stability and significant chemical, physical and biological properties. Methods:: In this, various methods for the fabrication of AgNPs are summarized. Importantly, we concentrated on the role of reducing agents of different plants parts, various working conditions such as AgNO3 concentration; ratio of AgNO3/extract; incubation time; centrifugal conditions, size and shapes. Results:: This study suggested that eco-friendly and non toxic biomolecules present in the extracts (e.g. leaf, stem and root) of plants are used as reducing and capping agents for silver nanoparticles fabrication. This method of fabrication of silver nanoparticles using plants extracts is comparatively cost-effective and simple. A silver salt is simply reduced by biomolecules present in the extracts of these plants. In this review, we have emphasized the synthesis and antibacterial potential of silver nanoparticles using various plant extracts. Conclusion:: Fabrication of silver nanoparticles using plant extracts have advantage over the other physical methods, as it is safe, eco-friendly and simple to use. Plants have huge potential for the fabrication of silver nanoparticles of wide potential of applications with desired shape and size.

scholarly journals One-pot green synthesis of gold and silver nanoparticles using Rosa canina L. extract

RSC Advances ◽  
2021 ◽  
Vol 11 (24) ◽  
pp. 14624-14631
Author(s):  
Pablo Eduardo Cardoso-Avila ◽  
Rita Patakfalvi ◽  
Carlos Rodríguez-Pedroza ◽  
Xochitl Aparicio-Fernández ◽  
Sofía Loza-Cornejo ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Aqueous Extract ◽  
Room Temperature ◽  
One Pot ◽  
Gold And Silver Nanoparticles ◽  
Rosa Canina ◽  
Capping Agents

Gold and silver nanoparticles were synthesized at room temperature using an aqueous extract from dried rosehips acting as reducing and capping agents with no other chemicals involved.

scholarly journals Antibacterial Activity of Silver Nanoparticles Synthesized by Bark Extract of Syzygium cumini

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Ram Prasad ◽  
Vyshnava Satyanarayana Swamy
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Cost Effective ◽  
Diffusion Method ◽  
Bark Extract ◽  
Force Microscopy ◽  
Atomic Force ◽  
Cost Effective Method ◽  
Uv Visible ◽  
Major Attention

The unique property of the silver nanoparticles having the antimicrobial activity drags the major attention towards the present nanotechnology. The environmentally nontoxic, ecofriendly, and cost-effective method that has been developed for the synthesis of silver nanoparticles using plant extracts creates the major research interest in the field of nanobiotechnology. The synthesized silver nanoparticles have been characterized by the UV-visible spectroscopy, atomic force microscopy (AFM), and scanning electron microscopy (SEM). Further, the antibacterial activity of silver nanoparticles was evaluated by well diffusion method, and it was found that the biogenic silver nanoparticles have antibacterial activity against Escherichia coli (ATCC 25922), Staphylococcus aureus (ATCC 29213), Pseudomonas aeruginosa (ATCC 27853), Azotobacter chroococcum WR 9, and Bacillus licheniformis (MTCC 9555).

Shape and stability of silver nanoparticles and their dependence on the conditions of preparation.

2012 ◽  
Vol 1371 ◽  
Author(s):  
M.I. Hernández-Castillo ◽  
O. Zaca-Moran ◽  
P. Zaca-Moran ◽  
M. Rojas-López ◽  
V.L. Gayou ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Reaction Time ◽  
Ag Nanoparticles ◽  
Reduction Procedure ◽  
Visible Spectrophotometry ◽  
Logical Sequence ◽  
Uv Visible ◽  
Citrate Reduction ◽  
Shape And Size

ABSTRACTBy using the citrate reduction procedure we have synthesized Ag nanoparticles, applying several conditions of preparation, being after characterized by UV-visible spectrophotometry. Following a logical sequence, the starting experiment was realized varying the reaction time, after that it was varied the concentration of the reductor agent, and finally it was varied the volume of the reductor agent. According to this methodology, TEM measurements show that firstly we have nanostructures with different shape and size, whereas in the last part of the experiment we have Ag nanoparticles with homogeneous shape and size.

One-Pot Low Temperature Synthesis of Monodisperse Silver Nanoparticles

2012 ◽  
Vol 12 (9) ◽  
pp. 7280-7283
Author(s):  
Renchun Yang ◽  
Dingxing Tang ◽  
Fengyun Ma ◽  
Ting Xian Tao ◽  
Yiming Ren ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Low Temperature ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
One Pot

One-pot synthesis of a TiO2–CdS nano-heterostructure assembly with enhanced photocatalytic activity

RSC Advances ◽  
2015 ◽  
Vol 5 (44) ◽  
pp. 34942-34948 ◽  
Author(s):  
Sayantan Mazumdar ◽  
Aninda J. Bhattacharyya
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Cadmium Sulfide ◽  
Self Assembly ◽  
Cost Effective ◽  
One Pot ◽  
One Pot Synthesis ◽  
Cost Effective Method

An unprecedented morphology of a titanium dioxide (TiO2) and cadmium sulfide (CdS) self-assembly obtained using a ‘truly’ one-pot and highly cost effective method with a multi-gram scale yield is reported here.

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