A new strategy to induce superhydrophobicity via introducing hierarchical structure into the polyvinylidene fluoride (PVDF) film was explored in this study. For purpose nanofibrous composite films were prepared by electrospinning of PVDF and PVDF/graphene blend solution as main precursors produce a net-like structure. Various spectroscopy microscopy methods combination with crystallographic wettability tests used evaluate characteristics synthesized films. Mechanical properties have been...

A chitosan/cellulose acetate (CA) composite membrane is prepared in this study. The effect of varying CA concentration on morphology and performance studied by using scanning electron microscopy the characterized differential calorimetry thermal gravimetric analysis. Molecular weight cut-off found to be 830 Da, which range nanofiltration. rejection for copper from a common effluent treatment plant wastewater observed 81.03% at 506.5 kPa applied pressure. mean pore size calculated 0.78 nm.

Liquid−liquid equilibria of water + propionic acid methyl butyl ketone (2-hexanone) and isopropyl (3-methyl-2-butanone) systems were measured at the temperatures (25, 35, 45) °C. Complete phase diagrams obtained by determining solubility tie-line data. The reliability experimental data was determined through Othmer−Tobias plots. Distribution coefficients separation factors evaluated over immiscibility regions. It is concluded that both are suitable separating agents for dilute aqueous acid.

In this study, graphene nano-sheets were grown and synthesized on copper foils the structure was analyzed with XRD, FTIR SEM. After that, 1 wt% low-layer added to water stabilized by sodium dodecyl sulfate (SDS). Prepared nano-fluid then used in hydrate formation of natural gas at 1000 psig 4 °C. The results compared a SDS/water system observed that had reduced dissolution time 19.2 %, induction 54.7 % amount storage is increased 7.6 %. Hydrate stability test showed also 5.9

In this study, the effects of glucose concentration, temperature, and time parameters hydrothermal reaction on growth prickly-shaped carbonyl iron were studied by using an experimental design to obtain maximum superhydrophobicity magnetic particles. The was carried out Response Surface Methodology (RSM) analysis Central Composite Design (CCD) method. Field Emission Scanning Electron Microscopy (FESEM) performed qualitatively assess iron, Water Contact Angle (WCA) used quantify resulting...

In this work, separation of disperse dyes and polyethylene glycol (PEG) as organic contaminant by nanocomposite membrane was investigated. The main goal study is to achieve more efficient from water at high fluxes. For purpose, iron oxide nanoparticles (NP) were synthesized through co-precipitation, blended with polysulfone/N-methylpyrrolidone solution, finally, dispersed in structure after coagulation casted polymeric solution. Effect magnetic nanoparticle concentration on filtration...

Abstract DNA-wrapped single-walled carbon nanotubes (DNA-SWCNTs) have demonstrated great versatility as optical sensors. SWCNTs emit a near-infrared fluorescence that is responsive to the slightest changes in their environment, enabling creation of sensors can respond single-molecule fluctuations within vicinity surfaces. The response and surface interactions these are determined by DNA wrapping sequence. However, lack information on relationship between sequence its effect SWCNT remains...

Due to the climate diversity in different parts of Iran, a variety plants grow across country, many them having pharmaceutical applications. At present, only few companies are producing herbal essence, all technically based on conventional methods extraction such as steam distillation and others. Because current serious concern with respect environmental conservation law use green technology seems imperative. The supercritical fluid is considered practical procedural method which has become...

Cellulose wastes of a wood and paper factory were used to produce activated carbon. Several chemical agents under various conditions for production carbon hence their adsorption properties have been evaluated. In addition the effect process parameters such as raw material, agent concentration, impregnation ratio, carbonization temperature, time, activation particle size soaking time on product yield studied. Based experimental results, optimum values determined. As an achievement, samples...

This article presents an experimental investigation on effects of morphology nanoparticles the viscosity nanofluids (NFs). Water and ethylene glycol were used as base fluids. A two step method was for preparation NFs. SiO2 nanoparticles, CNT graphene nano sheets dispersed in fluids separately with volume fraction ranging from 0.05% to 1.5%. Stability established by adding adequate surfactant sonication enough time. Then NFs measured Brookfield viscometer at fix ambient temperature. First, it...