Showing papers in "Colloids and Surfaces A: Physicochemical and Engineering Aspects in 2013"

TL;DR: In this article, the basic physical chemistry of pickering emulsions is explained and the ways to control the parameters of higher relevance with respect to development of applications are given, including the choice of the solid nanoparticles used as stabilizers and their surface properties, the control of emulsion type, droplet size, and rheology.

TL;DR: In this paper, the authors present the state-of-the-art of adsorption characterization of mesoporous and microporous materials by using the density functional theory (DFT) methods.

TL;DR: In this paper, a study of foamability and foam stability in the absence and in the presence of alkane-type oils for various surfactants was conducted, and the results for foam stability were discussed in terms of the classical entering/spreading coefficient, oil solubilization effect and stability of pseudoemulsion film.

TL;DR: An overview of the recent advances achieved in sorption of metal cations on LDHs can be found in this article, where several essential factors such as pH, temperature, ionic strength that influence the sorption are discussed, including precipitation, surface complexation, isomorphic substitution and chelation with the anions in the interlayer of LDH.

TL;DR: A review of polymer/nanosilver composite coatings for antibacterial applications is presented in this article, where the progress on antibacterial mechanism and cytotoxic effects of nanosilver is discussed.

TL;DR: The surface properties of native starch, namely rice, waxy maize, wheat and potato starch were characterized by contact angle measurement, zeta-potential, and then the emulsifying ability of these native starch granules was investigated by using liquid paraffin as oil phase and starch granule as sole emulsifier.

TL;DR: In this article, an overview of the principal results obtained during the treatment of water utilizing hybrid hydrogels for the removal of metal cations, radionuclides, dyes, anions and other miscellaneous pollutants from water.

TL;DR: In this paper, 1-dodecyl-3-methylimidazolium chloride (C 12 mim] [Cl]) is proposed as the IFT reducing agent and its dynamic IFT with one of the Iranian crude oil under different conditions were examined.

TL;DR: In this paper, the reduced graphene oxide/magnetite composites (RGO-M), synthesized by an in situ reaction, have been investigated for the adsorption of fluoroquinolone, ciprofloxacin (CIP) and norfloxacsin (NOR).

TL;DR: In this article, reduced graphene oxide/iron oxide (GO/FeO Fe 2 O 3 ) composites were prepared as super adsorbent to adsorb 1naphthylamine, 1-naphthol and naphthalene with different polaritiy.

TL;DR: In this paper, Humic acid-coated Fe3O4 nanoparticles were used as magnetic adsorbents for methylene blue (MB) adsorption and results showed that these nanoparticles possessed much higher adsorbed amount of MB than the bare materials and powders.

TL;DR: In this paper, the progress made toward the effective use of nanowires in particular metal oxide based nanostructures for achieving superior sensing performance is discussed and the promising approaches contributing toward the further development of this field have been discussed and elaborated.

TL;DR: In this article, a uniform flower-like composite photocatalysts had been successfully synthesized through a one-pot ethylene glycol (EG)-assisted solvothermal process in the presence of 1-hexadecyl-3-methylimidazolium chloride ([C16mim]Cl) and 1hexadecycled methyl-methyl-bromide (BMoB) reactable ionic liquids, and their structures, morphology, and optical properties were characterized by X-ray diffraction, XPS, scanning electron microscopy (SEM

TL;DR: In this paper, a composites of nanofibrillated cellulose (NFC) and ZnO nanoparticles (NP) were prepared by electrostatic assembly in aqueous medium and using polyelectrolytes as macromolecular linkers, which showed bacteriostatic and/or bactericidal activity against Gram positive (Staphylococcus aureus and Bacillus cereus) and Gram negative (Klebsiella pneumoniae) bacteria.

TL;DR: In this article, the results of the yield stress-pH and zeta potential -pH behavior of pure and mixed bentonite-kaolin clays were evaluated and a high and low Ca(II) content mixture was used to control and tailoring rheological properties of kaolin suspension with bentonite for specific applications.

TL;DR: In this paper, a bio-logical material, namely aloe leaf extract (ALE), was used for capping silver nitrate, and the reaction mixtures were incubated for 30 days, the presence of silver nanoparticles was confirmed by X-ray diffraction analysis.

TL;DR: In this paper, starch double W1/O/W2 Pickering emulsions were prepared and their encapsulation stability was studied as well as the impact of varying the lipophilic emulsifier (PGPR90) content and salt concentration in the W1 inner aqueous phase.

TL;DR: In this paper, an extensive experimental evaluation of electrical conductivity of nanofluids containing metallic and ceramic particles (Cu, Al2O3, and CuO) with different volume fractions in the dilute regime, particle sizes, electrolyte effect, temperature and base fluids has been carried out.

TL;DR: In this article, the authors reported on the efficient adsorption for uranium by metal-organic frameworks (MOFs) HKUST-1 from aqueous solution, and the results showed that the equilibrium data fitted well to Langmuir model in the studied range of uranium concentration (10 mg/l-800 mg/L) and temperature (298 K-318 K).

TL;DR: In this article, the effect of various polymers on both the rheological and mechanical properties of cosmetic O/W emulsions was investigated, and the relationships between rheologically and textural parameters of the emulsion were investigated.

TL;DR: In this article, the combined and synergistic effects of clay colloids and pore water velocity on virus transport and retention in porous media were examined at three pore-water velocities (0.38, 0.74, and 1.21 cm/min).

TL;DR: An overview on the state of the art for producing Janus colloidal particles based on Pickering emulsion strategy is presented in this paper. But the work in this paper is limited to the case of anisotropic particles.

TL;DR: A facile method to fabricate thin film composite (TFC) membranes with silver–polyethylene glycol PEGylated dendrimer nanocomposite coatings on the surface to reduce both bacteria and protein fouling in the sustainable water treatment processes is proposed.

TL;DR: In this paper, an ex situ chemical and in situ photo reduction approaches of silver-nanoparticle treatment on cotton fabrics were investigated, comparing the morphology, antimicrobial, durability of the treatment after wash and physical properties.

TL;DR: In this article, the adsorption of different organic acids and their influence on the pH-dependent charging, salt tolerance and so the colloidal stability of magnetite nanoparticles are compared.

TL;DR: In this article, an optimized nanostructured lipid carrier (NLC) for bicalutamide (BCT), a poorly water-soluble drug, and its phase transition behavior during the NLC processing was investigated.

TL;DR: In this paper, a mechanistic model was developed to predict the swelling pressure of fully saturated, bentonite-based materials in distilled water or dilute saline solutions over a large range of final dry densiti...

TL;DR: In order to increase the oily wastewater treatment performance, the hydrophobicity of quartz sand filter medium was improved by surface modification using 3-aminopropyltriethoxy silane coupling agent (KH550) as mentioned in this paper.

TL;DR: In this article, the equilibrium adsorption capability of chitosan nanoparticles and calcium-alginate gel microbeads for Cu2+ from copper sulfate solutions at fixed pH has been explored.

TL;DR: In this paper, the effect of relative humidity (RH) on the spreading behavior and the pattern formation of a dried drop of whole blood at the end of the evaporation process was investigated.