Skip to main content

Silver Nanoparticle Dispersion



Image retrieved from:
Silver nanoparticles can be incorporated into products such as photovoltaics, biological and chemical sensors due to its unique optical, electrical and thermal properties. Silver nanoparticles have high electrical conductivity, stability and low sintering temperature so they are used conductive inks, pastes and fillers. Additionally, due to their high novel optical properties, they are preferred as novel material for the molecular diagnostics and photonic devices. Depending on size and shape of the nanoparticles, Silver nanoparticles can absorb and scatter light. Common application area of silver nanoparticles is resulted from their antibacterial natures. Therefore, in many textiles, keyboards, wound dressing and biomedical devices, low level of silver ions can provide a protection against bacteria.
To optimize performance of silver nanoparticles applied into a target, their size, shape, surface and aggregation status are important parameters. Dispersed Silver nanoparticles increase the possibility of non-agglomerated and monodispersed nanoparticles if suitable processing technique is performed for the researches, developments and any other innovative applications. To characterize nanoparticles, different kinds of methods can be used such as transmission electron microscopy (TEM), dynamic light scattering (DLS), Zeta potential measurements and UV/VIS spectral analysis.
When the Silver nanoparticles associate with solvent molecules, the molecules produce a second layer onto surface of the particles providing stabilization and non-aggregated particles. Monodispersed and unaggregated Silver nanoparticles makes the researches understandable in terms of effects on biological system and the environment.
Silver nanoparticle dispersion can be obtained in the solution of water. In water, surface of silver nanoparticles exposed to dissolving by producing silver ions as in the following reaction.


Releasing rate of the Silver ion depends on the size, shape, aggregation state, pH and temperature of the medium. When the size of the particles decrease, the total surface area increases leading to speed the formation of silver ion. Formation of Silver ion is important for the application of Silver nanoparticle in antibacterial purposes. Therefore, dispersion of very small amount of Silver nanoparticles in water are important class of nanomaterials for the wide range of applications.
Products is here: https://nanografi.com/dispersions/ag-in-water-15nm...
                            https://nanografi.com/dispersions/ag-in-water-2nm-...

Posted by

Comments

Popular posts from this blog

Carbon Nanotube Threads

Since its discovery, carbon nanotube (CNT) has attracted many interests in different technology fields due to its extraordinary properties. Properties such as, high strength, great electrical and thermal conductivity, light weight and flexibility made CNT one of the best materials for wide range of applications. However, from its name it can be understood that CNT is a nanoscale material which is very small to be applied for the production of daily products. Researchers all around the world are working on finding methods and techniques which could produce new materials with the extraordinary properties of CNT. Image retrieved from:  https://worldindustrialreporter.com/strong-light-flexible-carbon-nanotubes-threads-with-ultrahigh-conductivity/ One of these research is focusing on the production of high strength threads that can be used in the manufacturing of fabrics, cables and ropes. An international group of scientists were able to produce a flexible conductive thread that i

Multi Walled Carbon Nanotube Dispersions

Carbon nanotubes (CNTs)  have attracted enormous attention in recent years due to its unique physical, electronic, optical and potential applications in materials science and nanotechnology. The van der Waals interaction between tubes, however, makes CNTs aggregate in most organic solvents and aqueous solutions, which is the major limitation of their practical applications.Various approaches have been studied to alter the CNT surface to promote the dispersion of individual nanotubes and prevent their reaggregation. On the basis of this widely accepted viewpoint, numerous techniques such as covalent bonding, surfactant coating and polymer wrapping have been developed for surface modification or sidewall functionalization.These methods, however, are complicated, time-consuming and cause permanent damage to the CNT structure and properties of the surface, which produces residues of the dispersion agent for the final product. Figure: Single Walled Carbon Nanotube (SWCNT) It has re

Magnesium Oxide Nanoparticles/Nanopowder and Applications

General Information about Magnesium Oxide Magnesium oxide which has the chemical formula of MgO, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of Magnesium. It is a white powder at room temperature. Magnesium Oxide has very high melting point (2825  o C) and boiling point (3600  o C).                                                                                                                                                                                Magnesium Oxide Nanoparticles/Nanopowder and Usage Areas                                        Magnesium Oxide nanoparticles/nanopowder  can be used in many different areas. For example Magnesium Oxide nanoparticles/nanopowder are used as a fire retardant for chemical fiber and plastics trades. For making crucible, smelter, insulated conduit, electrode bar, and electrode sheet  Magnesium Oxide Nanoparticles/Nanopowder  can be used as electric insulating material. Magnesium Oxide nan