##tical Properties Of The Polymer And Inorganic Nannocomposites

Nano-composite plastics and carbon nanotubes have been utilized for industrial and consumer packaging, the later offering an improved packaging solution for electronics components by making the materials used lighter and stronger. Nano-porous silica is a high porous, low-density solid material that supports various temperatures making it a great insulation product that can be applied in a wide range of fields from pipe insulation to refrigerators and even microelectronics. Nanoparticle based colloids are employed in the manufacturing of sunscreens, paints, and printer inks and nano-coatings can be applied in order to obtain scratch resistant surfaces. Composite nano-materials can be considered the basis for all the other current and future commercial applications of nanotechnology.

When exposed to sunlight, the the top layer of plasmonic nanoparticle discs produces hot electrons. After this step is complete, it is vital that the hot electrons are alienated from the electron holes, in order to preserve their energy. The middle layer of aluminum plays its part, as it causes for the electron holes to gravitate toward it. The bottom layer of nickel oxide traps the hot electrons, while allowing for the electron holes to pass through. If the device is immersed in water, the molecules can then be broken down into simpler

PPV, otherwise known as polyphenylene vinylene are electric conductors that processed into tiny films which emit a bright fluorescent yellow light which could potentially be a replacement for LEDS in electronics. PPV is prepared from p-xylene-bis and the addition of acetonitrile-tetrabutylammonium tetrafluoroborate and from there, the product is treated with heat to eliminate diethyl sulfide, HCL, and ethyl sulfide to form the final product, PPV. Similarly, another method, called direct chemical polymerization, formed PPV but it was only in the form of powder which could not be turned into tiny films for commercial use. In lab, we learned that PPV precursor can be synthesized in a one step reaction from p-xylene using NBs. In the reaction with

The polyvinyl alcohol (Mw ¼ 125,000 gm/mole, polydispersity index: PDI ¼ 0.25), and silver nitrate (AgNO3, 99.8% purity) were purchased from the SigmaeAldrich Chemicals. The PVA-Ag nanocomposite films were prepared by the in-situ chemical reduction method [8e12]. Sample b with 0.4 wt % of silver was prepared by dissolving silver nitrate in 5 mL of bidistilled water and 1.5 g of PVA in 50 mL of the bidistilled water. The temperature of PVA solution was kept at 65 C for 2 h. When the PVA becomes completely dissolved, the AgNO3 solutionwas added drop by drop by using a burette at constant 65 C for 0.1 h.

Silver nitrate AgNO3 (≥99.0%) and PVP (Average molecular weight ~55,000) were purchased from Sigma-Aldrich. Ethylene glycol (EG) and Hydrochloric acid (HCl) were purchased from Merck specialities Pvt Ltd. All the chemicals were used as received without any purification. We synthesized silver nanocubes (Ag NCs) by a typical polyol method. In a typical synthesis, 12.5 mL of ethylene glycol was poured in 50 mL of round bottom flask and heated at 140°C for 1 h under stirring. An amount of 2.5 mL of HCl solution (3.3mM in EG) was quickly injected into the reaction mixture. After 10 min, 7.5 mL of AgNO3 solution (94mM in EG) and 7.5 mL of PVP (147mM in EG) solutions were simultaneously injected into the stirring solution. The reaction mixture was

Silver has been used since Roman times as a disinfectant because of its well-known antimicrobial properties. AgNPs are considered attractive building blocks for nanomaterial architectures based upon the nanoparticles size and shape (Shipway etal 2000).

Gold(III) chloride solution and sodium citrate solution were freshly prepared with deionized water and filtered through a syringe filter (0.22 µm). Deionized water (45 mL) was added into three-neck flask incubated in the heating mantle with a stirring bar followed by the addition of HAuCl4 solution (5 mL, 10 mM). After the solution was boiling, the sodium citrate solution (5 mL, 38.8 mM) was added quickly. The color of the mixture gradually changed from black to wine red in the first two minutes, indicating the formation of gold nanoparticles. The AuNPs solution was kept boiling for another 10 minutes with a stirring speed of 700 rpm. After cooling down the solution to room temperature, the AuNP solution was filtered through a syringe filter (0.22µm). The concentration of AuNPs was determined by UV-Vis spectrometer (Cary100,

This book by Hornyak and partners brings into perspective an integrated introduction to the nanoscience and its applications. The book further presents illustrations in full color regarding nanotechnology. From these illustrations, I will be developing a detailed understanding of the fundamentals of nanotechnology. I will also be acquiring knowledge on the different aspects of nanotechnology including chemistry, physics, and biology. The authors also discuss the impacts of nanotechnology on the society, which is also an important part of my paper. I will be gathering information on industrial concerns associated with nanotechnology in manufacturing and safety. This will broaden my discussion to a better-informed approach in explaining implications of nanotechnology in the modern

It has an attractive shiny appearance, although it discolours easily. Silver (Ag), chemical element, a white shiny metal valued for its attractive beauty and electrical conductivity. Silver is period 5 of the periodic table, between copper and gold, and its physical and chemical properties are halfway between those two metals. It is used for jewellery, mirrors, coins and silver tableware, where appearance is important. Mirrors are almost always if not always made with silver, as researchers have proved that it is the best reflector of visible light. As a result of the continually growing demand for the precious white metal is a big indicator for the future price to increase dramatically. One of many developing fields is silver nanoparticles of technology, that is producing demand for silver that is still not yet fully priced into our current market. Silver is the most important valuable metal after gold and in fact silver has no equal. Which brings us to our next topic, when it comes to conducting electricity and/or heat, silver is the only way to go. As we previously stated before, it is the best and most efficient reflector of light. Silver is widely considered as the primary choice for growing range of technologies, due to its characteristics such as its antimicrobial properties (antimicrobial is an agent that kills microorganisms or stops their growth) (En.wikipedia.org, 2018). The first mass-market use of silver was photography aside from money and jewellery. Technology utilities the conductivity of silver and has made a huge demand in the manufacture of solar energy panels. One of the newest science fields are also creating potentially significant demand for silver along with the technology utilities. A nanoparticle is a submicroscopic size unit, measuring between 1-100 nanometres. Silver nanoparticles have numerous uses in medicine and technology. Silver is one of the most

Nowadays, much attention has been devoted to the use of Ag in treatment of cancer. As well as gold, silver is known as a good electrode material with high electrical conductivity and has the ability to self-assemble. Furthermore, for Ag nanoparticles on a conducting surface, we can expect some biocompatibility different from Au nanoparticles and the excitation of surface enhanced Raman scattering.

At small sizes, the flexibility of a particle to scatter lightweight of various wavelengths is predicated on particle size. An example of this is zinc oxide, which appears white in sunscreen once the particles are macroscale, however transparent when the particles are nanoscale. In a similar fashion, thin films composed of our silver nanowires are extremely clear albeit they are composed a material that is opaque at a macroscale.

In this study, we use an effective method for preparing PAA/Graphene composite materials via in situ polymerization with graphene content of up to 50% for high performance nanocomposites. We study a method of effectively electrodepositing PAA/Graphene films on various metallic substrates and then curing them stepwise until complete immidization has taken place. Characterization

Ternary nanocomposites (NCs) comprising Ag-Cu2O supported on reduced graphene oxide (rGO) with enhanced stability and visible light photocatalytic activity were synthesized via a facile and green approach using Benedict’s solution and glucose solution at room temperature without the need of any toxic reagent, surfactant or any special treatment. Besides mild reducing capability to GO, glucose also induces the functionalization of rGO sheets, preventing the aggregation of the reduced sheets and providing a site for the stabilization of Cu2O. Further, the reaction time for the synthesis of Ag-Cu2O/rGO NCs was significantly controlled by varying the concentration of Benedict’s and glucose solution. The photocatalytic efficiency of the

Systematic studies on the structural change of silver nanoparticles, which are easy to change shape and exhibit excellent localized surface plasmon resonance effect, were carried out and the predicted shape change was compared to the actual nanoparticles. Herein, key information on the alteration of silver nanoparticles was determined theoretically by a computational method, discrete dipole approximation (DDA). The galvanic reaction and sulfidation reaction were suggested to improve the stability of silver nanoprism (AgNP). In addition, the effect of additionally generated spherical particles, silver nanosphere (AgNS), on the absorbance was studied. Both AgNP and AgNS formed hollow nanostructure after the galvanic reaction, and these

In this study, a novel method was used to produce a nanostructured composite consisting of hydroxyapatite and MgO by varying the temperature. The structure and morphology of the synthesized nanocomposite were characterized. From X-ray diffraction (XRD) analysis, an increase in crystallite size and degree of crystallinity with an increase in the temperature was observed. The XRD investigation confirms that the grain size of the synthesized nanocomposite is in the range 4-11nm. The grain size increases when the temperature is increased due to the agglomeration of nanoparticles. The Fourier Transform Infrared Spectroscopy (FTIR) studies confirm the presence of PO43-, CO32- and Mg2+, and OH- groups. The UV-VIS Spectroscopy measurements show the reduction in the band-gap upon the temperature. Transmission Electron Microscope (TEM) images ascertained that nano HAP/MgO at 2500C and 3000C composite shows flakes like morphology.