Facile preparation of Ag nanoparticles using uric acid and their applications in colorimetric detection and catalysis

2018 ◽  
Vol 10 (37) ◽  
pp. 4518-4524 ◽  
Author(s):  
Qijun Dai ◽  
Te Wei ◽  
Changli Lv ◽  
Fang Chai
Keyword(s):  
Silver Nanoparticles ◽  
Uric Acid ◽  
Ag Nanoparticles ◽  
Colorimetric Detection ◽  
Cost Effective ◽  
Reducing Agent ◽  
Ag Nps ◽  
Cost Effective Method ◽  
Facile Preparation

In this study, we have reported a facile, cost-effective method for the synthesis of silver nanoparticles (Ag NPs) using uric acid (UA) as the reducing agent.

Highly selective and sensitive colorimetric detection of Hg(ii) ions using green synthesized silver nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 94513-94518 ◽  
Author(s):  
M. Annadhasan ◽  
N. Rajendiran
Keyword(s):  
Silver Nanoparticles ◽  
Aqueous Medium ◽  
Colorimetric Detection ◽  
Cost Effective ◽  
Sunlight Irradiation ◽  
Colorimetric Probe ◽  
Natural Sunlight ◽  
Cost Effective Method ◽  
Green Synthesized Silver Nanoparticles

A simple, green and cost-effective method has been developed for the synthesis of AgNPs under natural sunlight irradiation and the synthesized AgNPs has been used as an effective colorimetric probe for the detection of Hg2+ ions in aqueous medium.

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).

scholarly journals Effect of pH on Size and Concentration of Silver Nanoparticles Synthesized using Ixora coccinea Linn. Leaf Extracts

2020 ◽  
Vol 36 (6) ◽  
pp. 1103-1106
Author(s):  
Darwin F. Reyes ◽  
Gil Fabien S. Cabrera ◽  
Shemma Mica V. Mata ◽  
azmin Pariz D. San Pedro ◽  
add Christian C. Palioc ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Cost Effective ◽  
The Philippines ◽  
Reducing Agent ◽  
Leaf Extracts ◽  
Reaction Conditions ◽  
Effect Of Ph ◽  
Ixora Coccinea ◽  
Ornamental Shrub

The synthesis of silver nanoparticles via plant-mediated approach is an emerging area of research interest worldwide. The procedure is cost-effective and does not require the use of toxic chemicals and complicated reaction conditions. In the present investigation, silver nanoparticles were prepared using the leaf extracts of Ixora coccinea Linn., a common ornamental shrub in the Philippines, as the reducing agent. The effect of pH on the synthesis was investigated, and results showed that the quality of the synthesized silver nanoparticles changes in varying pH of the reducing agent.

scholarly journals Interaction of borohydride stabilized silver nanoparticles with sulfur-containing organophosphates

RSC Advances ◽  
2021 ◽  
Vol 11 (51) ◽  
pp. 32286-32294
Author(s):  
Shalini Shikha ◽  
Samit Dureja ◽  
Rachit Sapra ◽  
Jisha Babu ◽  
V. Haridas ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Ag Nanoparticles ◽  
Cost Effective ◽  
Pesticide Detection ◽  
Detection Technology ◽  
Sulfur Containing

Understanding the interaction between borohydride ion stabilized Ag nanoparticles and sulfur bearing organophosphates is the key to developing cost-effective colorimetric pesticide detection technology.

scholarly journals Ultrasonic synthesized Konjac gum/PEG-silver nanoparticles for colorimetric detection of hydrogen peroxide

2021 ◽  
Author(s):  
SELCAN KARAKUŞ ◽  
Nevin Taşaltın ◽  
Cihat Taşaltın ◽  
Nuray Bekoz Üllen
Keyword(s):  
Hydrogen Peroxide ◽  
Silver Nanoparticles ◽  
Biomedical Applications ◽  
Limit Of Detection ◽  
Low Cost ◽  
Colorimetric Detection ◽  
Rheological Parameters ◽  
Ag Nps ◽  
Synthesis Strategy ◽  
Konjac Gum

Abstract Green and low-cost synthesis strategy for ultrasonic preparation of polymer blend matrix based silver nanoparticles (Ag NPs) and the development of rapid and high sensitive detection route have a great attention in biomedical applications. Therefore, in this study, we investigated the hydrogen peroxide detection performance of Konjac gum (KG)/PEG-Ag NPs. The KG/PEG-Ag NPs was synthesized via an ultrasonic process and characterized by different techniques such as ultraviolet–visible spectroscopy (UV–Vis), Fourier-Transform Infrared spectroscopy (FT-IR), Scanning Electron Microscope (SEM) and Energy Dispersive X-ray spectroscopy (EDX). Furthermore, we determined the experimental optimization on the effect of the rheological parameters of nanostructure with the highest correlation constant (R 2 : 0.989-0.996), and the intrinsic viscosity (14.71-26.77 dl/g). To provide the miscible polymer blends and homogeneous dispersion of the nanostructure, we compared the rheological parameters with the experimental results. The response time was less than 5 s and the lower limit of detection was 0.071 μM. This novel highly sensitive, rapid, and naked-eye colorimetric biosensor based Ag NPs which are prepared ultrasonic manufacturing approach, opens up a green approach of development facile and rapid detection of hydrogen peroxide in practical biomedical applications.

scholarly journals Biosynthesis, Characterization, Antibacterial Activity and Anticancer Effect of Silver Nanoparticles Using Anethum Graveolens Leaf Extract

2020 ◽  
Vol 8 (4) ◽  
pp. 1625-1629
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Leaf Extract ◽  
Cost Effective ◽  
Disease Diagnosis ◽  
Anticancer Effect ◽  
Anethum Graveolens ◽  
Ag Nps ◽  
Suitable Alternative ◽  
Mcf 7

Nanoparticles are used in various fields of science, especially medicine. Advent of nanotechnology has led to significant development in disease diagnosis, treatment and drug delivery. Silver nanoparticles (Ag-NPs) play an important role in medical application, which makes them a viable alternative to common antibiotics. Amongst various methods, synthesis of Ag-NPs via green method has the advantage of being cost effective with no toxic agent. In this study, Spherical shape Ag-NPs with average size of 30 nm were synthetized using Anethum graveolens leaf extract as a green, cost-effective, non-toxic and environment-friendly source. Transmission electron microscopy (TEM), particle size analysis (PSA) and Fourier transform infrared (FT-IR) were performed to characterize synthesized Ag-NPs. The antibacterial activity of the synthetized Ag-NPs was evaluated against gram positive and negative bacterial pathogens. The minimum inhibitory concentration (MIC) at different concentrations of Ag-NPs were used to evaluate their antibacterial properties against Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, and Pseudomonas aeruginosa pathogens. The results exhibited a desirable antibacterial property of Ag-NPs, suggested its usage as putative antibacterial agents. Moreover, the anticancer effect of green synthesized Ag-NPs was evaluated against MCF-7 lines and results showed that the cell viability is depended on the concentration of Ag-NPs. In short, this method provides a simple, cost effective and eco-friendly way to synthesis Ag-NPs which can be used as a suitable alternative to common antibiotics that use hazardous chemical agents, additionally, with anticancer effects against MCF-7 cells.

scholarly journals Green Synthesis of Silver Nanoparticles using Medicinal Plants BerberisAsiatica and Cassia Fistula and Evaluation of Antioxidant and Anti-bacterial Activities

2021 ◽  
Vol 19 (2) ◽  
pp. 25-32
Author(s):  
Deegendra Khadka ◽  
Rachana Regmi ◽  
Mitesh Shrestha ◽  
Megha Raj Banjara
Keyword(s):  
Silver Nanoparticles ◽  
Nanoparticle Synthesis ◽  
Cost Effective ◽  
Face Centered Cubic ◽  
Related Field ◽  
Cost Effective Method ◽  
Vis Spectroscopy ◽  
Health Related ◽  
Face Centered ◽  
Biosynthesized Agnps

The application of silver nanoparticles in various sectors including health related field is remarkably profound. Nowadays, the research of synthesizing metal nanoparticles (MNPs) using plant extracts is fascinating field as it offers the eco-friendly and cost-effective method for nanoparticle synthesis. In this study, we synthesized silver nanoparticles (AgNPs) using methanolic extract of B.asiatica and C. fistula regarding their ethnomedical importance. The synthesized AgNPs were characterized by UV-Visible spectroscopy, Fourier transform infrared spectroscopy (FTIR) and X-ray diffractometer (XRD). UV-vis spectroscopy exhibited the characteristic Surface Plasmon Peak of silver nanoparticle~420 nm.FTIR data were measured to get a preliminary idea on the functional groups responsible for the stabilization of AgNPs. XRD data confirmed the natural crystal structure with a face centered cubic of AgNPs. The antibacterial activity of biosynthesized AgNPs was assessed by testing promptly available gram-positive Staphylococcus aureus and gram-negative Escherichia coli bacterial strain and antioxidant activity was calculated by DPPH assay. The overall outcomes of the studies concluded that the application of the biogenic synthesis of AgNPs of B. asiaticaas an antioxidant and antibacterial agent is more potent showing IC50 value 65.1±1.30 μg/mL and the highest zone of inhibition 15 mm in diameter against S. aureus.

Graphene Oxide Functionalized with Silver Nanoparticles and ZnO Synergic Nanocomposite as an Efficient Electrochemical Sensor for Diclofenac Sodium

NANO ◽  
2021 ◽  
Author(s):  
Saira Naz ◽  
Amjad Nisar ◽  
Lizhi Qian ◽  
Shafqat Hussain ◽  
Shafqat Karim ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Graphene Oxide ◽  
Diclofenac Sodium ◽  
Modified Electrodes ◽  
High Sensitivity ◽  
Cost Effective ◽  
Fast Response ◽  
Industrial Applications ◽  
Ag Nps ◽  
Enhanced Sensitivity

The development of a highly sensitive and selective electrocatalyst for the detection of diclofenac sodium (D.S.) has remained a great challenge. In this work, graphene oxide functionalized with silver nanoparticles and zinc oxide (Ag–ZnO–GO) electrocatalyst was developed and investigated for the detection of D.S. The Ag–ZnO–GO/glassy carbon electrode exhibits high sensitivity and fast response within 3[Formula: see text]s owing to the efficient oxidation of D.S. at a very low potential at 0.25[Formula: see text]V. Moreover, the electrode shows a low detection limit of 0.02[Formula: see text][Formula: see text]M ([Formula: see text]) and long-term stability. To explore the synergic effects, the measurements of D.S. using GO, ZnO and ZnO–GO modified electrodes were also performed. The results demonstrate that the Ag–ZnO–GO nanocomposite electrode exhibits enhanced sensitivity and selectivity compared to the other electrodes. In addition, the electrode reveals excellent results for D.S. detection in the real samples as well. The enhanced performance of the proposed electrode is attributed to the improved electron transfer ability and synergic effects of the plasmonic Ag NPs and ZnO–GO structure. It is expected that Ag–ZnO–GO composite is a promising candidate for the construction of cost-effective electrochemical biosensors for medical and industrial applications.

scholarly journals Green Synthesis of Silver Nanoparticles Using Different Plant Materials and Their Antibacterial Activity

2018 ◽  
Vol 6 (4) ◽  
pp. 294-301
Author(s):  
Dipesh Shahi ◽  
Elisha Bhattarai ◽  
Milan Poudel ◽  
Prarthana Pradhan ◽  
Raja Ram Pradhananga ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Cost Effective ◽  
Antibacterial Activities ◽  
Ag Nps ◽  
Plant Materials ◽  
Green Route ◽  
Sem Study ◽  
Varied Size ◽  
Physical And Chemical

The green route of metal nanoparticles synthesis has received significant attention in recent years due to it's cost-effective, non-toxic and eco-friendly nature in comparison to other physical and chemical methods. This study reports on the synthesis of silver nanoparticles (Ag-NPs) from bio-reduction of 1mM aqueous silver nitrate (AgNO3) by extracts prepared from three different plants namely, Brassica oleracea L. var. italica Plenck (Broccoli), Capsicum annuum L. (Chili) and Parthenium hysterophorus L. (Carrot grass). The synthesized Ag-NPs were characterized using UV- visible spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). Ag-NPs synthesized showed the surface plasmon resonance with the appearance of absorption peaks around the range of 410-430 nm. The possible biomolecules involved in the reduction and the stabilization of synthesized Ag-NPs were found to be alcoholic, phenolic, amine and carbonyl groups. SEM study revealed that Ag-NPs were spherical in shape with varied size about 10-40 nm. Besides, the analysis of antioxidant and antibacterial activities of Ag-NPs was carried out. The Ag-NPs synthesized using B. oleracea extract showed the higher antioxidant activity than Ag-NPs synthesized from both C. annuum & P. hysterophorus extracts. Ag-NPs exhibited good antibacterial activity against both Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria. The higher antibacterial activity was shown by Ag-NPs synthesized from P. hysterophorus extract in comparison to Ag-NPs synthesized from both C. annuum & B. oleracea extracts. Hence, it can be concluded that Ag-NPs synthesized following the green route could be the source for potential antioxidant and antibacterial agents. Int. J. Appl. Sci. Biotechnol. Vol 6(4): 294-301

Synthesis and anisotropic self-assembly of Ag nanoparticles immobilized by the Pluronic F127 triblock copolymer for colorimetric detection of H2O2

RSC Advances ◽  
2015 ◽  
Vol 5 (118) ◽  
pp. 97648-97657 ◽  
Author(s):  
Cong Wu ◽  
Guangmei Xia ◽  
Jing Sun ◽  
Rui Song
Keyword(s):  
Green Synthesis ◽  
Self Assembly ◽  
Ag Nanoparticles ◽  
Triblock Copolymer ◽  
Colorimetric Detection ◽  
Pluronic F127 ◽  
Quantitative Detection ◽  
Ag Nps ◽  
Self Assembled

Facile and green synthesis of a Ag@DA@F127 system for the sensitive and quantitative detection of H2O2. Ag NPs in the network-like F127 micelles were well-dispersed and anisotropically self-assembled.

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