Journal of Colloid and Interface Science (J Colloid Interface Sci )

Publisher: Elsevier

Description

Publishing original research on fundamental principles and their applications, the Journal of Colloid and Interface Science is concerned with the work of investigators in relevant areas of chemistry, physics, engineering, biology, and applied mathematics. The journal features original research contributions from university, government, and industrial laboratories worldwide; book reviews; and letters to the Editor.

  • Impact factor
    3.55
  • 5-year impact
    3.39
  • Cited half-life
    8.00
  • Immediacy index
    0.75
  • Eigenfactor
    0.07
  • Article influence
    0.87
  • Website
    Journal of Colloid and Interface Science website
  • Other titles
    Journal of colloid and interface science (Online), Journal of colloid and interface science, Colloid and interface science
  • ISSN
    1095-7103
  • OCLC
    36935837
  • Material type
    Document, Periodical, Internet resource
  • Document type
    Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Elsevier

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Voluntary deposit by author of pre-print allowed on Institutions open scholarly website and pre-print servers
    • Voluntary deposit by author of authors post-print allowed on institutions open scholarly website including Institutional Repository
    • Deposit due to Funding Body, Institutional and Governmental mandate only allowed where separate agreement between repository and publisher exists
    • Set statement to accompany deposit
    • Published source must be acknowledged
    • Must link to journal home page or articles' DOI
    • Publisher's version/PDF cannot be used
    • Articles in some journals can be made Open Access on payment of additional charge
    • NIH Authors articles will be submitted to PMC after 12 months
    • Authors who are required to deposit in subject repositories may also use Sponsorship Option
    • Pre-print can not be deposited for The Lancet
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Modeling electro-kinetic effects of aqueous solutions on charged polymer surfaces constitute great challenges. The interplay of water pH and salt concentration with surface charges at the nanoscale and macroscopic collective hydrodynamics leads to a rich phenomenology, including the hydrophobic/hydrophilic nature of the polymer surface. The present work aimed at contributing to the modeling of these phenomena for a specific system: Poly(vinylidene fluoride) (PVDF), including a surface functionalization by carboxylic groups. We report on molecular dynamic simulation of water interactions under imposed hydrodynamics with a flat PVDF surface functionalized with charged groups and buffered by sodium ions. Using this approach, we simulate the velocity and density profiles of water as a function of the functionalization. By using averaged charge distributions, the electrostatic surface potential at the mean field level, and hence the zeta potential, is also given. Deviations from Navier–Stokes type hydrodynamics at nanoscales are given and we found, in accord with experimental findings, that PVDF gets wet in contact with water. The observed dependencies of the hydrodynamics at nanoscales sheet light on the potential use of functionalized PVDF for instance as a membrane material for water filtration purposes.
    Journal of Colloid and Interface Science 11/2014; 432:70-76.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Carbon nanospheres (CNP) possess several unique properties that render CNP superior to traditional organic dyes and quantum dots in the biological application. However, the interaction of CNP with biological systems was far from well-known. In this study, a simple method using cocoon silk was used to synthesize photoluminescent CNP. The particle size of CNP was 100.6nm with well dispersity. The excitation/emission wavelength was 340nm and 442nm. Cellular uptake demonstrated the uptake of CNP by A549 cells was a time-, concentration- and energy-dependent procedure. Endosome was involved in the uptake rather than mitochondria. Through several uptake inhibitors, it showed the uptake was energy-dependent and mainly mediated by clathrin-mediated endocytosis. In vivo, CNP were mainly distributed in heart and lung, while only a modest amount of CNP was distributed in spleen, liver and kidney. The distribution in tumor was relatively low, which made CNP a candidate for heart cell imaging. At as high as 2mg/mL, CNP showed no obvious toxicity to cells. The hemolysis rate of CNP was also lower than 10%. These results suggested CNP was relatively safe in biological application.
    Journal of Colloid and Interface Science 09/2014; 429:77-82.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The oxidation of dopamine in slightly basic solutions and in the presence of oxygen as an oxidant allows for the deposition of dopamine-eumelanin ("polydopamine") films on almost all kinds of materials allowing for an easy secondary functionalization. Molecules carrying nucleophilic groups like thiols and amines can be easily grafted on those films. Herein we show that alkaline phosphatase (ALP), as a model enzyme, adsorbs to "polydopamine" films and part of the adsorbed enzyme is rapidly desorbed in contact with Tris buffer. However a significant part of the enzyme remains irreversibly adsorbed and keeps some enzymatic activity for at least 2weeks whereas ALP adsorbed on quartz slides is rapidly and quantitatively deactivated. In addition we estimated the Michaelis constant Km of the enzyme irreversibly bound to the "polydopamine" film. The Michaelis constant, and hence the affinity constant between paranitrophenol phosphate and ALP are almost identical between the enzyme bound on the film and the free enzyme in solution. Complementarily, it was found that "polydopamine" films display some phosphatase like catalytic activity.
    Journal of Colloid and Interface Science 09/2014; 429:1-7.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Flue gas desulfurization (FGD) gypsum, a familiar waste generated from coal-fired power plants, was successfully transformed to hydroxyapatite (FGD-HAP) by hydrothermal method. The obtained FGD-HAP was characterized by XRD, FTIR, TEM and BET methods and investigated as adsorbent for removal of Pb(2+) and Cd(2+) from wastewater. Batch experiments were performed by varying the pH values, contact time and initial metal concentration. The result of pH impact showed that the adsorption of two ions was pH dependent process, and the pH 5.0-6.0 was found to be the optimum condition. The achieved experimental data were analyzed with various kinetic and isotherm models. The kinetic studies displayed that the pseudo-second order kinetic model could describe adsorption processes well with high correlation coefficient, and the Langmuir isotherm model provided the best fit to the equilibrium experimental data. The maximum adsorption capacities calculated from Langmuir equation were 277.8 and 43.10mg/g for Pb(2+) and Cd(2+), respectively, which can compete with other adsorbents. The thermodynamic parameters revealed the adsorption processes were endothermic and spontaneous in nature. In binary adsorption, the amount of Cd(2+) adsorbed on FGD-HAP decreased by 46.0% with increasing concentration of Pb(2+), which was higher than that of Pb(2+)(21.7%), demonstrating the stronger affinity between FGD-HAP and Pb(2+). The highest amount of Pb(2+) and Cd(2+) desorbed from saturated FGD-HAP by EDTA solution confirmed the FGD-HAP was a promising alternative adsorbent in treatment of toxic Pb(2+) and Cd(2+) wastewater.
    Journal of Colloid and Interface Science 09/2014; 429:68-76.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Surfactant vesicles composed of ditallowethylesterdimethylammonium chloride (DEEDMAC), a cationic double tail surfactant, are commonly present in personal care industrial formulations such as fabric softeners. There is significant interest in formulating vesicle dispersions, investigation of stability, characterization of their structure and flow properties due to the biodegradable nature of DEEDMAC.
    Journal of Colloid and Interface Science 09/2014; 429:17-24.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Macroporous crosslinked polydivinylbenzene/polyacryldiethylenetriamine (PDVB/PADETA) interpenetrating polymer networks (IPNs) were prepared in this study and their adsorption performance was investigated using o-aminobenzoic acid as the adsorbate. The results indicated that PDVB/PADETA IPNs had a large equilibrium capacity to o-aminobenzoic acid, the Freundlich and Sips models were appropriate for fitting the equilibrium data, and the isosteric enthalpy kept constant (about -30kJmol(-1)) with the equilibrium capacity at 5-125mgg(-1). The pseudo-first-order rate equation characterized the kinetic data better than the pseudo-second-order rate equation. At an initial concentration of 593.1mgL(-1) and a flow rate of 84mLh(-1), the breakthrough and saturated capacities were 50.62 and 95.70mgmL(-1) wet resin, respectively, and the resin column could be regenerated by 0.1molL(-1) of sodium hydroxide (w/v) and 40% of ethanol (v/v).
    Journal of Colloid and Interface Science 09/2014; 429:83-7.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Ag doped TiO2/glass fibers (Ag-TiO2/GF) were prepared and used for photocatalytic disinfection of Escherichia coli (E. coli) in an indoor air environment. The prepared photocatalysts were characterized using scanning electron microscope (SEM) for morphology, X-ray diffraction (XRD) for microstructure, UV-Visible diffuse reflectance spectra (DRS) for optical properties and X-ray photoelectron spectroscopy (XPS) to determine elemental state. The optimized weight fraction of TiO2 in the TiO2/glass fiber (TiO2/GF) was 3%. The silver content in Ag/TiO2 was altered from 1% to 10% to investigate the optimal ratio of Ag doped on the TiO2/GF for the photocatalytic disinfection of E. coli. Doped Ag enhanced the electron-hole separation as well as charge transfer efficiency between the valance band and the conduction band of TiO2. The generated electron-hole pairs reacted with water and molecular oxygen to form strong oxidative radicals, which participated in the oxidation of organic components of E. coli, resulting in bacterial death. The photocatalytic disinfection activity under visible light increased with the increase in silver content up to 7.5% and then decreased slightly with further increasing Ag content. Among the three humidity conditions used in this study (40±5%, 60±5%, 80±5%), the highest disinfection ratio of E. coli by the photocatalytic system was observed in the intermediate humidity level followed by the high humidity level. Using the 7.5% Ag-TiO2/GF and the intermediate level of humidity (60±5%), the highest disinfection ratio and disinfection capacity of E. coli were 93.53% and 26 (CFU/scm(2)), respectively.
    Journal of Colloid and Interface Science 08/2014; 428:24-31.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Magnetic Ionic Liquid (MILs), novel magnetic molecules that form "pure magnetic liquids," will follow the Ferrohydrodynamic Bernoulli Relationship. Based on recent literature, the modeling of this fluid system is an open issue and potentially controversial.
    Journal of Colloid and Interface Science 08/2014; 428:16-23.
  • [Show abstract] [Hide abstract]
    ABSTRACT: A simple and versatile method for preparation of NH4V4O10 nanorods is developed via a simple hydrothermal route. NH4V4O10 nanorods display better cycling stability than NH4V4O10 microflowers as a cathode material for sodium-ion batteries because of the changes in crystalline structure, which would be in favor of superior discharge capacity. Furthermore, the enhancement of electrochemical performance for NH4V4O10 nanorods at high current rates is offered in addition of fluoroethylene carbonate to electrolyte. Such a good performance results from the improvement of reaction kinetics and Na-ion transfer rate.
    Journal of Colloid and Interface Science 08/2014; 428:73-7.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Kaolinite supported bimetallic Fe/Ni nanoparticles (K-Fe/Ni) demonstrated capacity for simultaneous removal of both cationic and anionic contaminants such as Pb (II) and NO3(-). The dispersion of Fe/Ni nanoparticles was improved when kaolinite was used as a stabilizer, and also enhanced the reactivity of K-Fe/Ni. The adsorption of Pb (II) onto the kaolinite and the consequent simultaneous catalytic reduction of Pb (II) and NO3(-) kaolinite were confirmed by SEM, BET, EDS, XRD and batch adsorption-reduction test. Orthogonal method showed that initial concentrations of Pb (II) and NO3(-), as well the dosage of K-Fe/Ni showed the most significant impact on the removal rates, where 86.3% of Pb (II) and 73.6% of NO3(-) was removed at optimized conditions. In addition, K-Fe/Ni could be stored for 15days in dry air without losing reactivity. Reusability test of K-Fe/Ni indicated that the removal efficiency decreased by 12.5% for Pb (II) and 27.2% for NO3(-) after using 3 times successively. Two electroplating wastewater samples were tested and showed K-Fe/Ni could remove more than 96% of Pb (II) and NO3(-) under the optimized conditions.
    Journal of Colloid and Interface Science 08/2014; 428:302-7.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Novel Pt/MnO2 catalysts modified with alkali metal salts were prepared and exhibited excellent catalytic activity for formaldehyde oxidation. The effects of both cation and anion in the salts were investigated on the structure of catalysts and their catalytic activity. The Na(+) modification was demonstrated to be a facile and effective method to improve the catalysts performance for formaldehyde oxidation, but the anions remaining on the support might act as a mild poison by covering the surface active sites of manganese oxides. The enhancing effect of anions in the salts follows the order of CO3(2-)>SO4(2-)>NO3(-). A 100% formaldehyde conversion can be obtained at 50°C over the Na2CO3-modified catalyst. Further analyses indicate that strong metal-support interaction, well-dispersed Pt nanoparticles with small particle sizes and large surface area are important for high catalytic activity.
    Journal of Colloid and Interface Science 08/2014; 428:1-7.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The equilibrium properties of the electrical double layer surrounding a charged spherical colloidal particle immersed in an aqueous electrolyte solution are examined taking into account the finite ion size. This study includes the representation of the steric interactions among ions using both the Bikerman and the Carnahan-Starling models, an account of all the effects related to the representation of hydrated ions as dielectric spheres (dependence of the electrolyte solution permittivity, on the local ion concentration, and appearance of the Born and the dielectrophoretic forces acting on the ions), and solution of the problem for both high and low surface charge values. We find that the Carnahan-Starling model together with effective ion permittivity related effects appears to be able to provide an interpretation to the electrokinetic potential vs. surface charge dependence in the case of colloidal particles suspended in aqueous electrolyte solutions. On the contrary, for electrode-electrolyte systems, both the Bikerman and the Carnahan-Starling models might be able to explain this dependence.
    Journal of Colloid and Interface Science 08/2014; 428:308-15.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Fluorinated surfactants with short perfluoroalkyl chains (R(F)) as potential substitutes for the environmentally questionable, long R(F) systems are presented. Three types of nonionic hydrophilic-fluorophilic amphiphiles are synthesized and evaluated based on surface activity in equilibrated (static) and non-equilibrated (dynamic) states. Furthermore, several mono- and disaccharide-based fluorosurfactants are also examined as potential non-bioaccumulative alternatives. A correlation between the chemical structure and resulting surface properties is made by comparing R(F) length, number and size, alkyl-spacer, and hydrophilic moieties. Based on dynamic and static surface tension experiments, the effects of surfactant structure are summarized to provide a basis for the future design of fluorosurfactants. We have found that surfactants with more perfluorinated chains tend to have a higher surface tension reduction, but typically result in slower dynamic behaviors. Using the presented structural characteristics, surfactants with R(F)<4 can be prepared with static surface tensions as low as 18.1mN/m or reduce surface tension within milliseconds.
    Journal of Colloid and Interface Science 08/2014; 428:276-85.
  • [Show abstract] [Hide abstract]
    ABSTRACT: The absence of targetability is the primary inadequacy of conventional chemotherapy. Targeted drug delivery systems are conceptualized to overcome this challenge. We have designed a targetable magnetic nanocarrier consisting of a superparamagnetic iron oxide (SPIO) core and biocompatible and biodegradable poly(sebacic anhydride)-block-methyl ether poly(ethylene glycol) (PSA-mPEG) polymer shell. The idea is that this type of carriers should facilitate the targeting of cancer cells.
    Journal of Colloid and Interface Science 07/2014; 433C:76-85.

Related Journals