Nanotechnology has the capability to modernize both the upstream and downstream oil and gas industry. It has been effectively used in exploration, drilling, production, refinery as well as in enhanced oil recovery (EOR) fields. Understanding the basics of scaling criteria development along with nanoparticle stabilized EOR mechanism will assist petroleum engineers in designing, analyzing, and […]
A comparative spectral study of water–acetonitrile systems containing photochromic spiropyran and spirooxazine derivatives in the absence and in the presence of silica nanoparticles was carried out. The photoinduced formation of proton complexes between phenolic oxygen of the colored forms of spirocompounds and the surface hydroxyl groups of silica nanoparticles was established for all of the […]
In the present study, phosphotungstic acid decorated on magnetic amine-grafted graphene oxide (GO-Amine/Fe3O4/H3PW12O40</sub>; GOA/Fe3O4/HPW) was prepared and evaluated as a new adsorbent for removal and separation of organic dyes from water. The obtained nanocomposite was fully characterized by means of XRD, FT-IR, Raman, VSM, SEM, EDX, AFM and BET surface area analysis. The results demonstrated […]
In this paper, the buckling behavior and nonlinear vibrations of graphene nanosheets in the magnetic field are studied analytically. By considering mechanical and magnetic interactions, new relationships have been proposed for the forces exerted by the magnetic field. The nonlinear governing equation is derived using Kirchhoff’s thin plate theory in conjunction with the nonlocal strain […]
Phosphorene nanoribbon (PNR) is a two-dimensional crystalline substance possessing semiconductor property, which makes it a new promising gas sensor. The gas sensing performance significantly depends on the adsorption mechanism and the strength of bonding between gas molecules and phosphorene atoms. Adsorption of a gas molecule onto PNR can be investigated through different parameters, such as […]
Magnetic Fe3O4 nanoparticles coated with thiol functionalized mesoporous silica (TFMS) were prepared and usedas a novel adsorbent for Pb2+ and Ag+ removal. FTIR spectra confirmed the Fe3O4 nanoparticle cores coated with mesoporous silica and indicated the presence of thiol groups on the surface. XRD analyses showed that synthesized adsorbent has a face-centered cubic magnetite phase […]
This study evaluated the light transmission characteristics of a single modular fiber with a cylindrical microchannel using the FDTD method. To this end, various microchannel diameters (4-11μm) were explored. The SMF included a silica core (n=1.4) coated by a nanodiamond layer with a refractive index of 2.42. The impact of Fabry-Perot resonance was evidently detected […]
In this research, a new organic–inorganic hybrid photocatalyst (TCMP@TiO2) was successfully synthesized through supporting tetrachloromenthoxyphosphor (III) (TCMP) on titanium dioxide (TiO2) for elimination of methyl violet (MV) color from water media. The hybrid inorganic-organic catalyst of this nanocomposite was characterized by 1H-NMR, 31P-NMR, 13C-NMR, UV-Vis, IR, SEM, and mass spectrometry methods. The maximum dye elimination […]
Magnetic nanoparticles have received much attention in synthesizing organic compounds due to their unique properties such as high contact surface, recyclability, and easy separation. In this study, Rice husk ash (RHA), an agriculture waste, was used as a silica source for MCM-41 synthesis. Ag2S/RHA-MCM-41 nanocomposite synthesized and characterized with FT-IR, SEM, and XRD. Prepared nanocomposite […]
The electrical and thermal properties of polymer composites are enhanced by the incorporation of nano and micron fillers. Reported work on polymer composites with the combination of micro and nano sized fillers like silicon dioxide, alumina, silicon carbide, molybdenum disulphide, and graphite are limited. In this investigation, the AC conductivity of composites with the combination […]
