Showing papers in "Colloids and Surfaces A: Physicochemical and Engineering Aspects in 2009"

TL;DR: In this article, the authors synthesize silver nanoparticles from AgNO3 through a simple green route using the latex of Jatropha curcas as reducing as well as capping agent.

TL;DR: In this paper, an eco-friendly process for rapid synthesis of silver nanoparticles using aqueous seed extract of Jatropha curcas was reported using a simple linear combination of HRTEM, XRD and UV-vis spectroscopic techniques.

TL;DR: In this article, a diatomite was used to adsorb Pb(II) from aqueous solution under various conditions and the results demonstrated that the adsorption of PbII was strongly dependent on ionic strength at pH ǫ 7.0.

TL;DR: A series of microencapsulated phase change materials (micro-PCMs) based on n-octadecane core and resorcinol-modified melamine-formaldehyde shell were synthesized by in situ polymerization method using different emulsifiers as discussed by the authors.

TL;DR: In this paper, PET fabric samples were treated with crosslinkable polysiloxane via different methods, simultaneous or after treatment with various concentrations of nanosized colloidal silver, and compared against Klebsiella pneumoniae and Staphylococcus aureus according to AATCC 100.

TL;DR: In this paper, the correlation between mechanical and dilatometric properties of aluminosilicate geopolymer binders is highlighted by analysis of a set of samples synthesised from a single ash source using different activating solution compositions and liquid/solid ratios.

TL;DR: In this article, the authors measured the zeta potential of shape-and size-controlled TiO2 nanoparticles obtained with the introduction of surfactants during synthesis at different pH values.

TL;DR: In this paper, gold nanoparticles in aqueous dispersions were prepared by two methods, using sodium citrate as reduction agent, and their interaction with l -cysteine was investigated.

TL;DR: A laboratory batch study has been performed to study the effect of physic-chemical factors such as initial metal ion concentration, solution pH, and amount of adsorbent, contact time and temperature on the adsorption characteristics of zinc (Zn2+) metal ions onto kaolin this article.

TL;DR: In this paper, the adsorption of Cu(II) from aqueous solution to GMZ bentonite was studied using batch technique under ambient conditions, and removal percentage (%) and distribution coefficient (Kd) were determined as a function of contact time, pH, ionic strength and temperature.

TL;DR: In this article, a stable o/w Pickering emulsion by fully hydrophilic fumed silica nanoparticles was achieved by using a standard rotor-stator device, and the most relevant parameter allowing the selection of successful oils was the water-oil interfacial tension.

TL;DR: In this article, the suitability of alkyl polyglycosides (APG) for improved oil recovery (IOR) applications was examined, in particular their capability to create low interfacial tensions with n-alkane hydrocarbons.

TL;DR: In this article, multi-walled carbon nanotube (MWCNT) supported Fe 2 O 3 catalysts were used to degrade phenol and phenolic contaminants (resorcinol and ortho-chlorophenol) with H 2 O 2 by Fenton reaction.

TL;DR: In this paper, the authors introduced fibrous single-walled carbon nanotube (SWNT) into carbonyl iron (CI) based magnetorheological (MR) fluid, to resolve the undesirable sedimentation.

TL;DR: In this article, a combination of nanoparticle adsorption and magnetic separation was used to the removal and recovery of Mo(VI) from water and wastewater solutions, which reached equilibrium within q max ) was found to be 33.4% of the adsorbent.

TL;DR: In this paper, a simple coating or dipping method was used to produce high contact angle and high water resistance papers with low cost and nontoxic materials, which can significantly reduce the total cost of the paper.

TL;DR: In this article, a large amount of Janus silica particles as small as 100nm in diameter were prepared through a simple method based on the elaboration of Pickering emulsions of wax-in-water.

TL;DR: In this paper, the adsorption characteristics of fluoride on activated alumina (AA) were studied using batch methods, and the effects of reaction time, pH, ionic strength, and coexisting anions were determined.

TL;DR: In this article, a new class of colloidal dielectric fluids was formulated with the objective of enhancing the dielectrics and cooling performance of the constitutive base fluids a mineral and a synthetic oil for application in electro thermal environment.

TL;DR: In this article, the authors investigated the sorption and intercalation of tetracycline (TC) from water onto rectorite, a regular interstratified clay mineral made of 1:1 ratio of illite and montmorillonite, under different pH and initial concentration conditions.

TL;DR: In this paper, the effect of surfactants on stability and dispersion of carbon black powders in aqueous medium was investigated by using anionic surfactant sodium oleate and a series of non-ionic surfaces, which were selected systematically to represent varying degrees of ethoxylation, and single and binary mixtures of the nonionic and ionic surfaces were employed in zeta potential and particle size measurements.

TL;DR: Gadolinium (Gd)-doped titania nanoparticles were synthesized under mild condition (low temperature) and exhibited a significant improvement in photocatalytic activity.

TL;DR: In this article, a co-condensation of 3-mercaptopropyltrimethoxysilane and tetramethoxylsilane in the hydroalcoholic medium with cetyl trimethylammonium bromide was studied.

TL;DR: In this article, a co-precipitation method was used to synthesize stable functionalized iron oxide nanoparticles through surface modification of magnetic IR nanoparticles with tailor-made phosphonic acids of type X(CH2)nPO3H (where X = COOH, NH2).

TL;DR: In this paper, the states of water and OH groups on the surface of amorphous nanosilica with heat treatment at different temperature for hours were studied by thermogravimetry, differential scanning calorimetry (DSC), and Fourier transform infrared (FT-IR) spectroscopy.

TL;DR: In this article, the interaction between particles and surfactants at an air-water interface has been investigated, with particular reference to the effect of the interactions on the stability of airwater foams.

TL;DR: In this article, the effective surface tension of liquid marbles was measured by three independent experimental techniques: vibration, shape analysis, and maximal marble height, which depends strongly on the kind of powder coating the marble.

TL;DR: In this article, a composite spherical adsorbent was prepared with ammonium molybdophosphate (AMP), sodium alginate (NaALG), and calcium chloride, and the adsorption of both rubidium and cesium ions onto the composite was investigated comprehensively by varying the initial metal ion concentration, pH, ionic strength and temperature.

TL;DR: In this paper, it was shown that the Young, Boruvka-Neumann, Wenzel and Cassie-Baxter equations result from the transversality conditions for a drop placed on the solid substrate and exerted to the external field.

TL;DR: In this paper, a new type of coagulant, poly-zinc-silicate-sulfate (PZSS), was synthesized by co-polymerization.