International Nano Letters

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

List of Papers (Total 236)

Green synthesis of silver nanoparticles using keratinase obtained from a strain of Bacillus safensis LAU 13

In this study, crude extracellular keratinase obtained from a novel keratin-degrading bacterial strain, Bacillus safensis LAU 13 (GenBank accession No. KJ461434) was used for the synthesis of silver nanoparticles (AgNPs). The particles were characterised by UV–Visible spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and transmission electron microscopy. The...

Part I: lithium metasilicate (Li2SiO3)—mild condition hydrothermal synthesis, characterization, and optical properties

Using LiNO3 and SiO2 as raw materials, Li2SiO3 nano-powders were synthesized via a nonstoichiometric 2:3 Li:Si molar ratio hydrothermal reaction at 180 °C for 48, 72, and 96 h in a NaOH aqueous solution system. The synthesized materials were characterized by powder X-ray diffraction technique and Fourier transform infrared spectroscopy. To investigate the effect of the reaction...

A benign hydrothermal synthesis of nanopencils-like zinc oxide nanoflowers

Synthesis of zinc oxide (ZnO) nanoflowers and nanopencils is normally carried out with the help of structure-directing chemicals and templates. Besides releasing environmentally toxic substances, the use of these chemicals restricts the practical applications of nanostructures. In this paper, we report a typical template-free and environmentally benign synthesis of ZnO...

Simulation and experimental study of rheological properties of CeO2–water nanofluid

Metal oxide nanoparticles offer great merits over controlling rheological, thermal, chemical and physical properties of solutions. The effectiveness of a nanoparticle to modify the properties of a fluid depends on its diffusive properties with respect to the fluid. In this study, rheological properties of aqueous fluids (i.e. water) were enhanced with the addition of CeO2...

Simulating the impact between particles with applications in nanotechnology fields (identification of properties and manipulation)

The aim of this research is to study and simulate the Andrews impact theory and its potential in identifying the properties of soft biological particles and in manipulating these particles at nano scale by means of the atomic force microscope (AFM). The reason for employing the Andrews theory in this research is that this theory is unique in considering the plastic state of soft...

Grand canonical Monte Carlo simulation of hydrogen physisorption in Li- and K-doped single-walled silicon carbide nanotube

Hydrogen adsorption was investigated in Li- and K-doped single-walled silicon carbide nanotubes (SWSiCNT) by applying the grand canonical Monte Carlo simulation. Our results depict that hydrogen storage increases as a function of pressure at fixed temperature. We considered seven doping sites on the nanotube. The results indicate that except for some doping sites, hydrogen...

Study in synthesis and characterization of carbon nanotubes decorated by magnetic iron oxide nanoparticles

Magnetic nanoparticles iron oxide with average sizes of 6 nm were synthesized by a chemical coprecipitation method from mixtures of FeCl2·4H2O and FeCl3·6H2O. For preparation, multi-walled carbon nanotubes (MWCNTS) with outer diameter of 50 nm, wall thickness from 1 to 2 nm and length from 500–2,000 nm were used. Characterization of the MWCNT–Fe3O4 by X-ray powder diffraction...

Phyto-reduction of graphene oxide using the aqueous extract of Eichhornia crassipes (Mart.) Solms

The aqueous extract of Eichhornia crassipes was used as reductant to produce graphene from graphene oxide by refluxing method. The complete reduction of graphene oxide was monitored using UV–Vis spectrophotometer. Characterization of graphene was made through FTIR, XRD, and Raman spectroscopy analysis. The stability of graphene was studied by thermal gravimetric analysis and zeta...

Magnetic solid phase adsorption, preconcentration and determination of methyl orange in water samples using silica coated magnetic nanoparticles and central composite design

This work evaluates the efficiency of SiO2-coated Fe3O4 magnetic nanoparticles (SMNPs) for adsorption of methyl orange (MO). Adsorption of MO on the studied nanoparticle was developed for removal, preconcentration and spectrophotometric determination of trace amounts of it. To find the optimum adsorption conditions, the influence of pH, dosage of the adsorbent and contact time...

A brief review on viscosity of nanofluids

Since the past decade, rapid development in nanotechnology has produced several aspects for the scientists and technologists to look into. Nanofluid is one of the incredible outcomes of such advancement. Nanofluids (colloidal suspensions of metallic and nonmetallic nanoparticles in conventional base fluids) are best known for their remarkable change to enhanced heat transfer...

Ultrasensitive determination of lead and chromium contamination in well and dam water based on fluorescence quenching of CdS quantum dots

We report lead (Pb2+) and chromium (Cr3+) determination in several water samples obtained from Nahand dam, Karkaj and Azarshahr well, tab and mineral waters to study their contamination in these systems. Determination method is based on the characteristic aggregation and fluorescence quenching of synthesized CdS quantum dots (QDs) at 555 nm by considered cations. Water-soluble...

Investigation of size dependency on lattice strain of nanoceria particles synthesised by wet chemical methods

An investigation of the influence of synthesis conditions on the crystallite size, lattice parameter and lattice strain of ceriumdioxide nanoparticles synthesised by coprecipitation and sol–gel processes is presented. The effect of initial precursors, precipitation and calcination temperatures, aging time and molar concentrations of precursor solution on particle size and lattice...

Histopathology effects of nickel nanoparticles on lungs, liver, and spleen tissues in male mice

Because of the classification of the nickel compounds as carcinogenic substances, there is a need for in vivo tests to nickel nanoparticles (NiNPs) for observing their effects on health experimentally. Spherical NiNPs with 10 nm in diameter and 75 ppm concentration were applied for investigating their toxicities within male albino mice as an in vivo model. We randomly made sham...

Facile synthesis and characterization of magnetic MnFe2O4/CNT nanocomposites

In this paper, the effects of carbon nanotubes (CNTs) were studied as supports for the synthesis of MnFe2O4 nanocomposite. The synthesis of nanocomposite powder MnFe2O4/CNTs was performed by direct precipitation method in aqueous solution. The prepared samples were analyzed by X-ray diffraction, scanning electron microscopy and Fourier transform infrared spectroscopy. The results...

Choice of precursor not affecting the size of anatase TiO2 nanoparticles but affecting morphology under broader view

In this study, anatase titanium dioxide nanoparticles were successfully prepared by a sol–gel method using two different precursors, titanium isopropoxide and titanium butoxide. Hydrochloric acid or nitric acid was added to adjust the pH of the solution. The sols obtained were dried at 80 °C and calcined at 450 °C for 3 h. The nanostructures were characterised by scanning...

A molecular dynamics simulation to investigate the thermal properties of SWCNT/poly(phenylenesulfone) nanocomposites

An equilibrium molecular dynamics simulation is applied to investigate the thermal properties of a single-walled carbon nanotube/poly(phenylenesulfone) as nanocomposite material. Cohesive energy density and the Hildebrand solubility parameter of pure poly(phenylenesulfone) and nanocomposite are calculated to compare the thermal analysis of them. The results indicate that carbon...

Adsorption polymer on reservoir rock and role of the nanoparticles, clay and SiO2

Nanotechnology has been used in many applications and new possibilities are discovered constantly. Recently, a renewed interest has risen in the application of nanotechnology for the upstream petroleum industry, such as exploration, drilling, production and distribution. In particular, adding nanoparticles to fluids may significantly benefit enhanced oil recovery and improve well...

Synthesis and characterizations of NiO nanoparticles via solid-state thermal decomposition of nickel(II) Schiff base complexes

To raise the need of new precursors in the synthesis of NiO nanoparticles, mononuclear nickel(II) Schiff base complexes, viz. Ni(salbn) and Ni(Me2-salpn), were employed as precursor in solid-state thermal decomposition. Structure, purity and morphology of these nanoparticles have been examined by Fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron...

Investigation of the cutoff frequency of double linear halo lightly doped drain and source CNTFET

In this work we investigate the n-type single halo implantation in channel of lightly doped drain and source CNTFET (SH-LDDS-CNTFET) and propose the n-type double linear halo implantation in the channel of LDDS-CNTFET. These transistors are simulated with a non-equilibrium Green’s function method. We demonstrate that in the proposed structure the fT at the VGS ranges of 0–0.25 V...

Implications of the stability behavior of zinc oxide nanoparticles for toxicological studies

The increasing use of zinc oxide (ZnO) nanoparticles in sunscreens and other cosmetic products demands a risk assessment that has to be done in toxicological studies. Such investigations require profound knowledge of the behavior of ZnO in cell culture media. The current study was performed to get well-dispersed suspensions of a hydrophilic (ZnO-hydro) and a lipophilic coated...

Modification of conductive polyaniline with carbon nanomaterials

The synthesis of polyaniline/single-wall nanotube, polyaniline/multi-wall nanotube and polyaniline/single-wall nanotube/graphen nanosheets nanocomposites by in situ polymerization are reported in this study. The substrates were treated with a mixture of concentrated sulfuric acid and concentrated nitric acid before usage to functionalize with carboxylic and hydroxyl groups...

Effect of folic acid decorated magnetic fluorescent nanoparticles on the sedimentation of starch molecules

Ferrite–folic acid (FA) nanohybrids were synthesized and characterized by various analytical tools like Fourier transform infrared spectroscopy, UV–Visible spectroscopy, fluorescence spectroscopy, field emission scanning electron microscopy, X-ray diffraction analysis and vibrating sample measurement techniques. After the nanohybrid formation, both the crystallinity and the...

Silver nanoparticles: synthesis and application in mineralization of pesticides using membrane support

Pesticides are deliberately used for controlling the pests in agriculture and public health, due to which, a part of it is present in the drinking water. Due to their widespread use, they are present in both surface and ground water. Most of the pesticides are resistant to biodegradation and are found to be carcinogenic in nature even at trace levels. Conventional methods of...

Facile fabrication and characterization of chitosan-based zinc oxide nanoparticles and evaluation of their antimicrobial and antibiofilm activity

The present investigation deals with the facile synthesis and characterization of chitosan (CTS)-based zinc oxide (ZnO) nanoparticles (NPs) and their antimicrobial activities against pathogenic microorganisms. ZnO–CTS NPs were synthesized through two different methods: nano spray drying and precipitation, using various organic compounds (citric acid, glycerol, starch and whey...

A green chemical approach for synthesis of shape anisotropic gold nanoparticles

A complete green chemical reaction between aurochloric acid and tea polyphenols resulted in the reduction of Au3+ → Au0. The reaction was carried out in a Teflon-coated bomb digestion vessel at 200 °C. It was observed that with increasing the reaction time from 1 to 5 h, the shape of the nanoparticles changed from spherical- to rod-like structures. The reaction was followed with...