scholarly journals Silver Nanoparticles and PDMS Hybrid Nanostructure for Medical Applications

2018 ◽  
Author(s):  
Solano-Umaña Victor ◽  
Vega-Baudrit José Roberto
Keyword(s):  
Silver Nanoparticles ◽  
Medical Applications ◽  
Hybrid Nanostructure

scholarly journals Silver nanoparticles: Synthesis, medical applications and biosafety

Theranostics ◽  
2020 ◽  
Vol 10 (20) ◽  
pp. 8996-9031 ◽  
Author(s):  
Li Xu ◽  
Yi-Yi Wang ◽  
Jie Huang ◽  
Chun-Yuan Chen ◽  
Zhen-Xing Wang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Medical Applications ◽  
Nanoparticles Synthesis

scholarly journals Green synthesis of silver nanoparticles toward bio and medical applications: review study

2018 ◽  
Vol 46 (sup3) ◽  
pp. S855-S872 ◽  
Author(s):  
Seyyed Mojtaba Mousavi ◽  
Seyyed Alireza Hashemi ◽  
Younes Ghasemi ◽  
Amir Atapour ◽  
Ali Mohammad Amani ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Medical Applications ◽  
Review Study

scholarly journals Biosynthesis of Gold and Silver Nanoparticles and Its Applications

2021 ◽  
pp. 15-24
Author(s):  
Anum Afreen
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Metal Salt ◽  
Visible Region ◽  
Environmental Applications ◽  
Medical Applications ◽  
Gold And Silver Nanoparticles ◽  
Simple Process ◽  
Synthesis Of Nanoparticles

The synthesis of nanoparticles is in the limelight in modern nanotechnology. Biosynthesis of nanoparticles by using different methods is currently under exploitation. Nanoparticles can be synthesized by Bacteria, Virus, Fungi, Algae and Plants. Biosynthesis of Nanoparticles is a simple process in which intracellular and extracellular extract of an organism is mix with a metal salt.        Their optical properties are reported to be dependent on the size, which imparts different colors due to absorption in the visible region. Their reactivity, toughness and other properties are also dependent on their unique size, shape and structure. Due to these characteristics, they are suitable candidates for various commercial and domestic applications, which include catalysis, imaging, medical applications, energy-based research, and environmental applications. This review explains the various microorganisms like bacteria, algae, fungi; virus, plants and yeast involved in the synthesis of these Nanoparticles also elucidate the characterization of Nanoparticles and its applications.

scholarly journals Examination of Sol-Gel Derived Hydroxyapatite Enhanced with Silver Nanoparticles using OCT and Raman Spectroscopy

2017 ◽  
Vol 24 (1) ◽  
pp. 153-160 ◽  
Author(s):  
Maciej J. Głowacki ◽  
Marcin Gnyba ◽  
Paulina Strąkowska ◽  
Mateusz Gardas ◽  
Maciej Kraszewski ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Sol Gel ◽  
Reference Sample ◽  
Medical Applications ◽  
Non Destructive ◽  
Widespread Interest ◽  
Surrounding Bone ◽  
Solution Volume

Abstract Hydroxyapatite (HAp) has been attracting widespread interest in medical applications. In a form of coating, it enables to create a durable bond between an implant and surrounding bone tissues. With addition of silver nanoparticles HAp should also provide antibacterial activity. The aim of this research was to evaluate the composition of hydroxyapatite with silver nanoparticles in a non-destructive and non-contact way. For control measurements of HAp molecular composition and solvent evaporation efficiency the Raman spectroscopy has been chosen. In order to evaluate dispersion and concentration of the silver nanoparticles inside the hydroxyapatite matrix, the optical coherence tomography (OCT) has been used. Five samples were developed and examined ‒ a reference sample of pure HAp sol and four samples of HAp colloids with different silver nanoparticle solution volume ratios. The Raman spectra for each solution have been obtained and analyzed. Furthermore, a transverse-sectional visualization of every sample has been created and examined by means of OCT.

scholarly journals ‘Hairy’ root extracts as source for ‘green’ synthesis of silver nanoparticles and medical applications

RSC Advances ◽  
2020 ◽  
Vol 10 (65) ◽  
pp. 39434-39446
Author(s):  
Natalia Kobylinska ◽  
Anatolij Shakhovsky ◽  
Olena Khainakova ◽  
Dmytro Klymchuk ◽  
Liliya Avdeeva ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Hairy Root ◽  
Artemisia Annua ◽  
Medical Applications ◽  
Hairy Root Cultures ◽  
Root Cultures ◽  
Root Extracts

The research was focused on the synthesis of silver nanoparticles (AgNPs) using extracts from the “hairy” root cultures of Artemisia tilesii Ledeb. and Artemisia annua L.

scholarly journals Bioavailability of silver nanoparticles and ions: from a chemical and biochemical perspective

2013 ◽  
Vol 10 (87) ◽  
pp. 20130396 ◽  
Author(s):  
Renata Behra ◽  
Laura Sigg ◽  
Martin J. D. Clift ◽  
Fabian Herzog ◽  
Matteo Minghetti ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antimicrobial Properties ◽  
Silver Ions ◽  
Metallic Silver ◽  
Medical Applications ◽  
Ionic Form ◽  
Biological Impact ◽  
Engineered Nanomaterial ◽  
Silver Nps ◽  
Biological Organisms

Owing to their antimicrobial properties, silver nanoparticles (NPs) are the most commonly used engineered nanomaterial for use in a wide array of consumer and medical applications. Many discussions are currently ongoing as to whether or not exposure of silver NPs to the ecosystem (i.e. plants and animals) may be conceived as harmful or not. Metallic silver, if released into the environment, can undergo chemical and biochemical conversion which strongly influence its availability towards any biological system. During this process, in the presence of moisture, silver can be oxidized resulting in the release of silver ions. To date, it is still debatable as to whether any biological impact of nanosized silver is relative to either its size, or to its ionic constitution. The aim of this review therefore is to provide a comprehensive, interdisciplinary overview—for biologists, chemists, toxicologists as well as physicists—regarding the production of silver NPs, its (as well as in their ionic form) chemical and biochemical behaviours towards/within a multitude of relative and realistic biological environments and also how such interactions may be correlated across a plethora of different biological organisms.

High Density Polyethylene Containing Antibacterial Silver Nanoparticles for Medical Applications

2012 ◽  
Vol 315 (1) ◽  
pp. 218-225 ◽  
Author(s):  
Magdalena Ziąbka ◽  
Anna Mertas ◽  
Wojciech Król ◽  
Andrzej Bobrowski ◽  
Jan Chłopek
Keyword(s):  
Silver Nanoparticles ◽  
High Density Polyethylene ◽  
High Density ◽  
Medical Applications

Optimization of Process Parameters in Bioreduction of Silver Nanoparticles by Pycnoporus sanguineus

2012 ◽  
Vol 626 ◽  
pp. 95-98
Author(s):  
Yen San Chan ◽  
Mashitah Mat Don
Keyword(s):  
Silver Nanoparticles ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Culture Supernatant ◽  
Inoculum Size ◽  
Medical Applications ◽  
Pycnoporus Sanguineus ◽  
Pharmaceutical Applications ◽  
Optimization Of Process Parameters ◽  
Biological And Medical Applications

Controlling the size of nanomaterials are attracting great interest in the research on scientific and technological applications because of their unit properties for achieving specific processes especially in biological and medical applications. Microbial assisted biosynthesis of nanoparticles is of growing potential in the area of bionanotechnology compared to chemical synthesis when dealing with medical and pharmaceutical applications. A simple and effective approach for AgNPs synthesis by Pycnoporus sanguineus was demonstrated and the effect of production mode on controlling size of AgNPs produced was studied. Culture supernatant of Pycnoporus sanguineus was used to synthesis AgNPs of nanosize. One factor at a time (OFAT) method was employed to perform optimization on process parameter such as inoculum size and AgNO3 concentration. The morphology, uniformity and concentration of AgNPs were investigated using dynamic light scattering (DLS) zetasizer and atomic absorption spectroscopy. It was observed that increase in inoculum size leads to decrease in size of AgNPs and increase of AgNPs concentration. Hence, it can be deduced that optimizing the bioprocess parameters led to superior control of AgNPs size.

scholarly journals Biological Activity and Nanostructuration of Fe3O4-Ag/High Density Polyethylene Nanocomposites

2019 ◽  
Vol 3 (2) ◽  
pp. 34 ◽  
Author(s):  
Phuong Nguyen-Tri ◽  
Van Nguyen ◽  
Tuan Nguyen
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
High Density Polyethylene ◽  
High Density ◽  
Hybrid Nanoparticles ◽  
Hybrid Nanostructure ◽  
Ag Nps ◽  
Force Microscopy ◽  
Atomic Force ◽  
Growth Method

We report here the synthesis of uniform nanospheres-like silver nanoparticles (Ag NPs, 5–10 nm) and the dumbbell-like Fe3O4-Ag hybrid nanoparticles (FeAg NPs, 8–16 nm) by the use of a seeding growth method in the presence of oleic acid (OA)/oleylamine (OLA) as surfactants. The antibacterial activity of pure nanoparticles and nanocomposites by monitoring the bacterial lag–log growth has been investigated. The electron transfer from Ag NPs to Fe3O4 NPs which enhances the biological of silver nanoparticles has been proven by nanoscale Raman spectroscopy. The lamellae structure in the spherulite of FeAg NPs/High Density Polyethylene (HDPE) nanocomposites seems to play the key role in the antibacterial activity of nanocomposites, which has been proven by nanoscale AFM-IR. An atomic force microscopy coupled with nanoscale infrared microscopy (AFM-IR) is used to highlight the distribution of nanoparticles on the surface of nanocomposite at the nanoscale. The presence of FeAg NPs in PE nanocomposites has a better antibacterial activity than that reinforced by Ag NPs due to the faster Ag+ release rate from the Fe3O4-Ag hybrid nanoparticles and the ionization of Ag NPs in hybrid nanostructure.

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