scholarly journals Sustainable One-Step Solid-State Synthesis of Antibacterially Active Silver Nanoparticles Using Mechanochemistry

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2119
Author(s):  
Mária Kováčová ◽  
Nina Daneu ◽  
Ľudmila Tkáčiková ◽  
Radovan Búreš ◽  
Erika Dutková ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Solid State ◽  
Antibacterial Properties ◽  
Absorption Spectrometry ◽  
Milling Process ◽  
Thymus Vulgaris ◽  
Tem Analysis ◽  
One Step ◽  
Thymus Serpyllum ◽  
The Stability

A combination of solid-state mechanochemical and green approaches for the synthesis of silver nanoparticles (AgNPs) is explored in this study. Thymus serpyllum L. (SER), Sambucus nigra L. (SAM) and Thymus vulgaris L. (TYM) plants were successfully applied to reduce AgNO3 to AgNPs, as confirmed by X-ray diffraction analysis, with SER being the best reducing agent, and TYM being the worst. The experiments were performed via a one-step planetary milling process, where various AgNO3:plant mass ratios (1:1, 1:10, 1:50 and 1:100) were investigated. Atomic absorption spectrometry indicated that the stability of the mechanochemically produced AgNPs increased markedly when a sufficiently large quantity of the reducing plant was used. Furthermore, when larger quantities of plant material were employed, the crystallite size of the AgNPs decreased. TEM analysis revealed that all AgNPs produced from both AgNO3:plant ratios 1:1 and 1:10 exhibit the bimodal size distribution with the larger fraction with size in tens of nm and the smaller one below 10 nm in size. The antibacterial activity of the produced AgNPs was observed only for AgNO3:plant ratio 1:1, with the AgNPs prepared using SER showing the greatest antibacterial properties.

scholarly journals Synthesis of Silver Nanoparticles from Anagalis arvensis and Their Biomedical Applications

2018 ◽  
Author(s):  
Mohib Shah ◽  
Natasha Anwar ◽  
Samreen Saleem ◽  
Iqbal Munir ◽  
Niaz Ali Shah ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Reducing Power ◽  
Spherical Shape ◽  
Artemia Salina ◽  
Maximum Activity ◽  
Tem Analysis ◽  
Synthesis Of Nanoparticles ◽  
The Stability ◽  
Average Size ◽  
Biological Methods

Background. Nanotechnology is promising field for generating new applications. A green synthesis of nanoparticles through biological methods using plant extract have a reliable and ecofriendly approach to improve our global environment. Methods. Silver nanoparticles (AgNPs) were synthesized using aqueous extract of Anagalis arvensis L and silver nitrate and were physicochemically characterized. Results. The stability of AgNPs toward acidity, alkalinity, salinity and temperature showed that they remained stable at room temperature for more than two months. The SEM and TEM analysis of the AgNPs showed that they have a uniform spherical shape with an average size in the range of 40–78 nm. Further 1-Dibhenyl-2-Picrylhydrazl radical in Anagalis arvensis L.mediated AgNPs showed a maximum activity of 98% at concentration of 200μg/mL. Hydrogen peroxide scavenging assay in Anagalis arvensis L. mediated AgNPs showed a maximum activity of 85% at concentration of 200μg/mL. Reducing power of Anagalis arvensis L.Ag NPs exhibited a higher activity of 330 μg/mL at concentration of 200 μg/mL. These NPs have cytotoxic effects against brine shrimp (Artemia salina) nauplii with a value of 53% LD 178.04μg/mL. Conclusion. The AgNPs synthesized using Anagalis arvensis L. extract demonstrate a broad range of applications.

Novel One Step Sonosynthesis and Deposition Technique to Prepare Silver Nanoparticles Coated Cotton Textile with Antibacterial Properties

2019 ◽  
Vol 81 (6) ◽  
pp. 720-727 ◽  
Author(s):  
Aravind H. Patil ◽  
Shushilkumar A. Jadhav ◽  
Vikramsinh B. More ◽  
Kailas D. Sonawane ◽  
Pramod S. Patil
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Properties ◽  
Cotton Textile ◽  
Deposition Technique ◽  
One Step ◽  
Coated Cotton

scholarly journals Green one-step synthesis of silver nanoparticles and their biosafety and antibacterial properties

2021 ◽  
Vol 15 (1) ◽  
pp. 26-32
Author(s):  
Xueling Cao ◽  
Lin Zhu ◽  
Yageng Bai ◽  
Fei Li ◽  
Xiaoyang Yu
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Properties ◽  
One Step

scholarly journals Revealing the Importance of Aging, Environment, Size and Stabilization Mechanisms on the Stability of Metal Nanoparticles: A Case Study for Silver Nanoparticles in a Minimally Defined and Complex Undefined Bacterial Growth Medium

Nanomaterials ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1684 ◽  
Author(s):  
Ilse De Leersnyder ◽  
Leen De Gelder ◽  
Isabel Van Driessche ◽  
Pieter Vermeir
Keyword(s):  
Silver Nanoparticles ◽  
Metal Nanoparticles ◽  
Bacterial Growth ◽  
Antibacterial Properties ◽  
Aging Effect ◽  
Defined Medium ◽  
Medium Composition ◽  
Growth Media ◽  
The Stability

Although the production and stabilization of metal nanoparticles (MNPs) is well understood, the behavior of these MNPs (possible aggregation or disaggregation) when they are intentionally or unintentionally exposed to different environments is a factor that continues to be underrated or overlooked. A case study is performed to analyze the stability of silver nanoparticles (AgNPs)—one of the most frequently used MNPs with excellent antibacterial properties—within two bacterial growth media: a minimally defined medium (IDL) and an undefined complex medium (LB). Moreover, the effect of aging, size and stabilization mechanisms is considered. Results clearly indicate a strong aggregation when AgNPs are dispersed in IDL. Regarding LB, the 100 nm electrosterically stabilized AgNPs remain stable while all others aggregate. Moreover, a serious aging effect is observed for the 10 nm electrostatically stabilized AgNPs when added to LB: after aggregation a restabilization effect occurs over time. Generally, this study demonstrates that the aging, medium composition (environment), size and stabilization mechanism—rarely acknowledged as important factors in nanotoxicity studies—have a profound impact on the AgNPs stabilization and should gain more attention in scientific research.

scholarly journals A Novel Coloration of Polyester Fabric through Green Silver Nanoparticles (G-AgNPs@PET)

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 569 ◽  
Author(s):  
K. Hasan ◽  
Md. Pervez ◽  
Md. Talukder ◽  
Mst. Sultana ◽  
Sakil Mahmud ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Low Cost ◽  
Antibacterial Properties ◽  
Polyester Fabric ◽  
Bacterial Reduction ◽  
Tem Analysis ◽  
Pet Fabric ◽  
Thermogravimetric Analyzer ◽  
Transmission Electron ◽  
Fabric Surface

This paper reports a novel route for the coloration of polyester fabric with green synthesized silver nanoparticles (G-AgNPs@PET) using chitosan as a natural eco-friendly reductant. The formation of AgNPs was confirmed by UV-visible spectroscopy. The morphologies and average particles size of G-AgNPs was investigated by transmission electron microscope (TEM) analysis. The uniform deposition of G-AgNPs on the PET fabric surface was confirmed with scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR) spectroscopy. The thermal properties were investigated using a thermogravimetric analyzer (TGA). The coloration and fastness properties of fabric were found to be significantly improved, a result related to the surface plasmon resonance of G-AgNPs. The antibacterial properties of fabric were also found to be excellent as more than 80% bacterial reduction was noticed even after 10 washing cycles. Overall, the proposed coating process using green nanoparticles can contribute to low-cost production of sustainable textiles.

scholarly journals Sonochemical co-deposition of antibacterial nanoparticles and dyes on textiles

2016 ◽  
Vol 7 ◽  
pp. 1-8 ◽  
Author(s):  
Ilana Perelshtein ◽  
Anat Lipovsky ◽  
Nina Perkas ◽  
Tzanko Tzanov ◽  
Aharon Gedanken
Keyword(s):  
Antibacterial Properties ◽  
Dip Coating ◽  
Wide Range ◽  
Coating Methods ◽  
One Step ◽  
Dye Fastness ◽  
The Stability ◽  
Antibacterial Nanoparticles ◽  
Fabric Surface ◽  
First Time

The sonochemical technique has already been proven as one of the best coating methods for stable functionalization of substrates over a wide range of applications. Here, we report for the first time on the simultaneous sonochemical dyeing and coating of textiles with antibacterial metal oxide (MO) nanoparticles. In this one-step process the antibacterial nanoparticles are synthesized in situ and deposited together with dye nanoparticles on the fabric surface. It was shown that the antibacterial behavior of the metal oxides was not influenced by the presence of the dyes. Higher K/S values were achieved by sonochemical deposition of the dyes in comparison to a dip-coating (exhaustion) process. The stability of the antibacterial properties and the dye fastness was studied for 72 h in saline solution aiming at medical applications.

scholarly journals One-step Synthesis of Silver Nanoparticles Using Saudi Arabian Desert Seasonal Plant Sisymbrium irio and Antibacterial Activity Against Multidrug-Resistant Bacterial Strains

Biomolecules ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 662 ◽  
Author(s):  
Mickymaray
Keyword(s):  
Silver Nanoparticles ◽  
Electron Microscope ◽  
Multidrug Resistant ◽  
Desert Plant ◽  
Face Centered Cubic ◽  
Ag Nps ◽  
Acinetobacter Baumanii ◽  
Tem Analysis ◽  
One Step ◽  
Sisymbrium Irio

Globally, antimicrobial resistance has grown at an alarming rate. To combat the multidrug-resistant (MDR) superbugs, silver nanoparticles (Ag NPs) were synthesized using an aqueous leaf extract of seasonal desert plant Sisymbrium irio obtained from the central region of Saudi Arabia by a simple one-step procedure. The physical and chemical properties of the Ag NPs were investigated through ultraviolet visisble analysis (UV-vis), Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), and transmission electron microscope (TEM) analysis. The UV-vis spectrum showed an absorption band at 426 nm. The XRD results showed a highly crystalline face-centered cubic structure. The surface morphology analyzed using SEM and TEM analyses showed the particle size to be in the range 24 nm to 50 nm. Various concentrations of Ag NPs were tested against MDR Pseudomonas aeruginosa and Acinetobacter baumanii that cause ventilator-associated pneumonia (VAP). American Type Culture Collection (ATCC) Escherichia coli-25922 was used as the reference control strain. The Ag NPs effectively inhibited tested pathogens, even at the lowest concentration (6.25 µg) used. The bacterial inhibitory zone ranged from 11–21 mm. In conclusion, the newly synthesized Ag NPs could be a potential alternative candidate in biomedical applications in controlling the spread of MDR pathogens.

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