International Nano Letters

http://link.springer.com/journal/40089

List of Papers (Total 223)

Efficient FeCl3/SiO2 as heterogeneous nanocatalysis for the synthesis of benzimidazoles under mild conditions

Iron(III) supported on nano silica as a new catalyst has been synthesized. Structural properties of this complex have been studied by TEM, SEM and EDX. The average crystalline size of Iron(III) supported on nano silica is 30–50 nm. Catalytic activity of this catalyst has been investigated by synthesis of benzimidazoles from 1, 2-diaminobenzene and aromatic aldehydes, and also the ...

The effect of laser environment on the characteristics of ZnO nanoparticles by laser ablation

In this paper, zinc oxide (ZnO) nanoparticles were prepared by laser ablation of Zinc (purity of 99/99 %) target. The effect of solvents, methanol and distilled water on the characterization of ZnO has been investigated. The beam of a Q-switched Nd: Yag laser with the length wave of 1064 nm and pulse duration of 6 ns was used. ZnO nanoparticles which were produced in distilled ...

The effect of agitation state on polyol synthesis of silver nanowire

In the present work, the effect of agitation rate on the growth mechanism of silver nanowires is evaluated during polyol process. It was found that increasing the agitation rate leads to the increase in the oxygen transfer rate which in turn enhances the oxidative etching conditions leading to the formation of a variety of nanostructures (nanoparticles, nanorods and nanowires). In ...

A mathematical space mapping model for ballistic carbon nanotube field-effect transistors

In this study, a mathematical model is presented based on mathematical space mapping for ballistic carbon nanotube field-effect transistors. This model is generalized from another model that was based on the concept of neural space mapping to calculate the three parameters of a coarse model. These parameters were the threshold voltage, the Early voltage, and assumed constant k of a ...

Albumin microparticles as the carriers for allopurinol and applicable for the treatment of ischemic stroke

Albumin nanoparticles are already used for the treatment of the cancer. In our current work, it is presented the technique for the preparation of small-size 1- to 5-micron particles coated with the allopurinol. We propose that this combination of the compounds might be useful for the ischemic stroke treatment as the agent preventing formation of the brain edema, reactive oxygen ...

Synthesis of polymer nano-brushes by self-seeding method and study of various morphologies by AFM

Polymer brushes due to their high sensitivity to environmental changes are the best and newest means for developing the responsive materials. Polymer nano-brushes consisting various surface morphologies and uniformly distributed amorphous grafted chains were synthesized via single-crystal growth procedure. Poly(ethylene glycol)-b-polystyrene (PEG-b-PS) and poly(ethylene ...

A review on applications of nanotechnology in the enhanced oil recovery part B: effects of nanoparticles on flooding

Chemical flooding is of increasing interest and importance due to high oil prices and the need to increase oil production. Research in nanotechnology in the petroleum industry is advancing rapidly, and an enormous progress in the application of nanotechnology in this area is to be expected. The nanotechnology has been widely used in several other industries, and the interest in the ...

A chemical reduction approach to the synthesis of copper nanoparticles

Development of improved methods for the synthesis of copper nanoparticles is of high priority for the advancement of material science and technology. Herein, starch-protected zero-valent copper (Cu) nanoparticles have been successfully synthesized by a novel facile route. The method is based on the chemical reduction in aqueous copper salt using ascorbic acid as reducing agent at ...

Development of nanostructured lipid carrier for dacarbazine delivery

Dacarbazine (Dac) is one of the most commonly used chemotherapy drugs for treating various cancers. However, its poor water solubility, short half-life in blood circulation, low response rate and high side effect limit its application. This study aimed to improve the drug solubility and prolong drug release by developing nanostructured lipid carriers (NLCs) for Dac delivery. The ...

Incorporation of polyaniline nanofibres on graphene oxide by interfacial polymerization pathway for supercapacitor

The aim of this work is to improve the supercapacitor performance of polyaniline (PANI). Polyaniline nano fibres are incorporated into graphene oxide (GO) layers by interfacial polymerization pathway, wherein PANI fibres are intercalated into GO layers and also cover the GO. PANI–GO hybrid composite is obtained in semi-crystalline form with good conductivity (1.7 S cm−1). The ...

Evaluation of the of antibacterial efficacy of polyvinylpyrrolidone (PVP) and tri-sodium citrate (TSC) silver nanoparticles

We present silver nanoparticles as the new age broad spectrum antibiotic. Siver nanoparticles exhibit unique physical and chemical properties that make them suitable for understanding their biological potential as antimicrobials. In this study, we explored the antibacterial activity of silver nanoparticles (TSC-AgNPs) and silver nanoparticles doped with polyvinylpyrrolidone ...

The role of deposition temperature and catalyst thickness in graphene domains on Cu

Few layered graphene is synthesized on Cu foil by thermal chemical vapor deposition. We have investigated the effect of temperature and catalyst’s thickness on graphene domain length and number. The synthesized graphene was characterized using Raman spectroscopy and scanning electron microscopy. Raman spectroscopy results show that D-peak intensity increases with an increasing ...

Catalytic reduction of methylene blue and Congo red dyes using green synthesized gold nanoparticles capped by salmalia malabarica gum

Stable gold nanoparticles (AuNPs) were synthesized using salmalia malabarica gum as both reducing and capping agent. It is a simple and eco-friendly green synthesis. The successful formation of AuNPs was confirmed by UV–visible spectroscopy (UV–Vis), Fourier transform infrared spectroscopy (FTIR), X-ray powder diffraction and transmission electron microscopy (TEM). The synthesized ...

Timber industry waste-teak (Tectona grandis Linn.) leaf extract mediated synthesis of antibacterial silver nanoparticles

The current research article emphasizes efficacious use of teak leaves, an agro -biowaste from world’s premier hardwood timber industry, for “green” synthesis of silver nanoparticles (AgNPs). Bioactive compounds of the leaves act as prolific reducing and stabilizing agents in AgNP synthesis. The characterization of the AgNPs synthesized using teak leaves revealed that the particles ...

Effect of nano-zinc oxide on nitrogenase activity in legumes: an interplay of concentration and exposure time

Experiments were carried out to study the effect of zinc oxide nanoparticles (nano-ZnO) on nitrogenase activity in legumes. In the first experiment, nodulated roots of cluster bean, moth bean, green gram and cowpea were dipped in Hoagland solution containing 1.5 and 10 μg mL−1 of nano-ZnO for 24 h. Nitrogenase activity in cluster bean, green gram and cowpea roots increased after ...

Removal of zinc(II) ion by graphene oxide (GO) and functionalized graphene oxide–glycine (GO–G) as adsorbents from aqueous solution: kinetics studies

The main purpose of this study is to explain the absorption of zinc from aqueous solution by grapheme oxide and functionalized grapheme oxide with glycine as the adsorbent surface. For confirmed functionalized graphene oxide, the glycine amino group was added to the surface of graphene oxide. The effects of the initial concentration of Zn(II) ions and contact time were studied. ...

Raman spectroscopy and TGA studies for the synthesis of multi-walled carbon nanotube-functionalized thiol (MWCNT-SH) nanocomposites: study of effect of concentration

We have investigated some methods such as Raman spectroscopy and thermogravimetric analysis (TGA) studies for the nanocomposites multi-walled carbon nanotube-functionalized thiol (MWCNT-SH) by adding to cysteamine with known concentration in nanocomposite. For this study, we synthesized nanocomposite MWCNT-SH by the reaction between multi-walled carbon nanotubes-functionalized ...

Thermal gravity analysis for the study of stability of graphene oxide–glycine nanocomposites

In this work, we synthesized graphene oxide–glycine (GO–G) nanocomposite. To produce this nanocomposite with GO surface, glycine with known concentration was added to GO suspension in ethanol solvent. Nanocomposites provided were characterized by scanning electron microscope (SEM) and Fourier transform infrared (FT-IR) spectroscopy, respectively. Thermogravimetric analysis (TGA) ...

An intensive study on the optical, rheological, and electrokinetic properties of polyvinyl alcohol-capped nanogold

Low-temperature-assisted wet chemical synthesis of nanogold (NG) using gold hydroxide, a new precursor salt in the presence of a macroscopic ligand poly(vinyl alcohol) PVA in water in the form of nanofluid, is reported for the first time in this article. In the absorption spectra, the surface Plasmon resonance absorption band in the range of 520–545 nm signifies the formation of NG ...

Magnetic properties of cobalt ferrite synthesized by hydrothermal method

In this study, the magnetic properties of nanocrystalline cobalt ferrite synthesized via the hydrothermal method have been investigated. The structural properties of the produced powders were investigated using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The observed XRD pattern confirmed the spinel/cubic structure of the prepared cobalt ferrite. The SEM ...

Solution combustion synthesis using Schiff-base aluminum complex without fuel and optical property investigations of alumina nanoparticles

Synthesis of alumina nanomaterials via a solution combustion technique using Schiff base aluminum (III) complex at 820 and 950 °C for 4 h was performed successfully. The synthesis procedure was performed using the complex in the absence and presence of urea and glycine as fuel for comparison. The obtained data showed that the procedure without using fuel resulted in a better phase ...

Modeling of forward pump EDFA under pump power through MATLAB

Optical fiber loss is a limiting factor for high-speed optical network applications. However, the loss can be compensated by variety of optical amplifiers. Raman amplifier and EDFA amplifier are widely used in optical communication systems. There are certain advantages of EDFA over Raman amplifier like amplifying the signal at 1550 nm wavelength at which the fiber loss is minimum. ...

Synthesis of semiconductor oxide nanosheets, nanotetrapods and nanoplane-suite like grown on metal foil using different method

ZnO production nanostructure using different method: first method, electrochemical deposition on Zn foil using 0.3 M zinc sulfate heptahydrate (ZnSO4·7H2O) and sulfuric acid aqueous solution at a current density of 30 and 35 mA/cm2 for deposition time 40 min at room temperature and second method, Zn foils were thermally oxidized in a conventional tube furnace at a temperature equal ...

The effect of different parameters on mechanical properties of PA-6/clay nanocomposite through genetic algorithm and response surface methods

This paper presents a methodology for determination of the optimal material and processing parameters (i.e., nanoclay content, melt temperature, feeding rate, and screw speed) to maximize simultaneously tensile modulus and tensile strength of injection-molded PA-6/clay nanocomposites through coupling response surface method and genetic algorithm. The tensile tests on PA-6/clay ...