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Showing papers in "Journal of Colloid and Interface Science in 2012"


Journal ArticleDOI
TL;DR: Electrochemical impedance spectroscopy shows that the higher the initial dopamine concentration, the more rapidly compact and impermeable films are formed, and a model for the deposition of polydopamine films is proposed, which relies on a rate equation taking into account both attractive and repulsive interactions between small Polydopamines on the surface and in solution.

317 citations


Journal ArticleDOI
TL;DR: A facile method to generate core-shell structured Fe(3)O(4)@SiO(2)-Ag magnetic nanocomposite by an in situ wet chemistry route with the aid of polyvinylpyrrolidone as both reductant and stabilizer is reported.

268 citations


Journal ArticleDOI
TL;DR: The present study demonstrates that the manipulation of emulsions' interfacial microstructure, based on the formation of a thick interface around the oil droplets by food-grade particles (Pickering emulsion), is an effective approach to slow down lipid oxidation.

256 citations


Journal ArticleDOI
Xiaoshu Lv1, Jiang Xu1, Guangming Jiang1, Jie Tang1, Xinhua Xu1 
TL;DR: For the first time, nanoscale zero-valent iron (nZVI)-Fe(3)O(4) nanocomposites, prepared by an in situ reduction method, are employed for chromium(VI) removal in aqueous environment and the reaction mechanism was discussed in terms of the mutual benefit brought by the electron transfer from Fe(0) to Fe(3).

237 citations


Journal ArticleDOI
TL;DR: The results imply less trapping of oil, but with a greater surface area for dissolution and reaction in carbon storage applications, this suggests that in CO(2)-wet systems, capillary trapping is less significant, but that there is a large surface area to dissolve and reaction.

192 citations


Journal ArticleDOI
TL;DR: The 126 most frequently cited articles published in the adsorption field between 1900 and 2011 were identified and characterized using the Science Citation Index (Expanded); the citation patterns as a function of time varied widely among the topmost articles.

189 citations


Journal ArticleDOI
TL;DR: The results indicate that site physical and chemical heterogeneity must be considered when designing an nZVI emplacement strategy, likely in a pH-dependent manner.

187 citations


Journal ArticleDOI
TL;DR: Highly porous carbons prepared by the chemical activation of two mesoporous carbons obtained by using hexagonal- (SBA-15) and cubic (KIT-6)-ordered mesostructured silica as hard templates exhibit a high CO(2) adsorption rate, a good selectivity for carbon dioxide capture, and they can be easily regenerated.

187 citations


Journal ArticleDOI
Jin Huang1, Meng Ye1, Yuqi Qu1, Lianfeng Chu1, Rui Chen1, He Qizhuang1, Xu Dongfang1 
TL;DR: An organic-inorganic hybrid mesoporous silica material was synthesized by two-step post-grafting method of SBA-15 with 3-aminopropyltrimethoxy-silane and thionyl dichloride and activated ethylenediaminetetraacetic acid and its maximum adsorption capacity calculated by the Langmuir model was 273.2 mg g(-1).

180 citations


Journal ArticleDOI
TL;DR: A novel and simple method for the preparation of chemically functionalized boron nitride nanotubes (BNNTs) is presented and in vitro biocompatibility and cellular up-take of the functionalized BNNTs are demonstrated.

173 citations


Journal ArticleDOI
TL;DR: It is proposed that Ni( 2+) transferred electron from the surface to induce ozone decomposition in the catalytic process, the oxidation of lattice oxygen played an essential role in enhancing the reversion of Ni(3+) to Ni(2+), and the promotion of (*)OH reaction was a combined balance action of Ni (2+)/Ni( 3+) and O(2-)/O(2).

Journal ArticleDOI
TL;DR: To examine the similarities between surfaces using microparticles versus a uniform micropattern as the microstructure, CA and CAH were compared across a range of pitch values for the two types of microstructures.

Journal ArticleDOI
TL;DR: The effects of surface chemical constituent and geometrical structure on hydrophobicity and oleophobicity are discussed; such information allows us to engineer surfaces with specific oleophobic behavior.

Journal ArticleDOI
TL;DR: P pH-responsive interpenetrating network (IPN) hydrogel beads of polyacrylamide grafted κ-carrageenan and sodium alginate for targeting ketoprofen to the intestine indicated that the prepared beads were able to retard the drug release in stomach leading to the reduced ulceration, hemorrhage and erosion of gastric mucosa.

Journal ArticleDOI
TL;DR: Investigation of the effect of surfactants' type and concentration on the interfacial tension and contact angle in the presence of hydrophilic silica particles found that both particles and surfactant are adsorbed at the interface, modifying the interface structure.

Journal ArticleDOI
TL;DR: A formation mechanism of the nanotubular α-MnO(2) based on evidence, which was assembly of nanorods through an "oriented attachment" process is proposed based on the evidence.

Journal ArticleDOI
TL;DR: Experimental results indicated that the addition of a small amount Fe-ions (optimized content at 0.1 wt.%) could evidently improve the activity of Bi(2)WO(6).

Journal ArticleDOI
TL;DR: The present study demonstrates the production and properties of a biosurfactant isolated from marine Streptomyces species B3, which was effective at very low concentrations over a wide range of temperature, pH, and salt concentration.

Journal ArticleDOI
Franziska Moebius1, Dani Or1
TL;DR: A model for hydraulically coupled sinusoidal capillaries was used to analyze stick-jump interfacial motions with a significant inertial component absent in Darcy-based description of fluid front displacement, highlighting challenges and potential new insights offered by consideration of pore scale mechanisms in macroscopic descriptions of fluid displacement fronts in porous media.

Journal ArticleDOI
TL;DR: It is shown that NiO nanoparticles prepared in situ within heavy oil display much higher affinity toward asphaltene adsorption, and uptake in the order of 2.8 g asphatene/g nanoparticles is reported.

Journal ArticleDOI
TL;DR: The formation of the oxygen-containing groups can decrease pH(PZC) values and improve surface hydrophilicity of CNTs and their catalytic activity in the profile reaction of naphthalene hydrogenation to tetralin are both promoted due to the presence of these oxygen- containing groups.

Journal ArticleDOI
TL;DR: The adsorptive characteristics of the mercapto-functionalized nano-Fe(3)O(4) magnetic polymers intended for removal of mercury (II) showed that the adsorption efficiency increased with pH increasing and reached a plateau at pH above 3.0.

Journal ArticleDOI
TL;DR: The observed results suggest a different adsorption mechanisms for each of the three oxyanions, with important implications for the mobility of these anions in acid mine drainage systems.

Journal ArticleDOI
TL;DR: The adsorption/regeneration tests with ozone oxidation showed that the aerogel might be regenerated, nevertheless the materials lost their hydrophobicity and thus different methods should be evaluated in forthcoming investigations.

Journal ArticleDOI
TL;DR: It is found that a volume fraction of nanoparticles not higher than 3% is enough to provide a long-lasting stabilization to MRFs containing above 30% iron microparticles, and this effect produces soft sediments by avoiding short-range attractions between the large iron particles.

Journal ArticleDOI
TL;DR: The addition of ammonium hydroxide resulted in the Zr-MOF with a slight lower adsorption ofCO(2) and CH(4), however, the selectivity of CO(2)/CH(4) is significantly enhanced.

Journal ArticleDOI
TL;DR: The effect of hydrophobizing the nanost structure was examined with regards to the values of microstructure pitch and nanostructure density necessary to achieve the petal effect and to study wear resistance for industrial applications, a wear experiment was performed using an atomic force microscope (AFM).

Journal ArticleDOI
TL;DR: N nano-emulsions in the system using hexanol as cosurfactant are smaller in size, lower in polydispersity, and have a higher stability than those with pentanol.

Journal ArticleDOI
TL;DR: The natural and modified zeolite samples treated at high temperature and in steam were found to be less stable compared with synthetic zeolites, resulting in a loss of crystallinity, a decrease in the surface area and pore volume, and a decreaseIn the surface acidity as well as dealumination, and decationisation.

Journal ArticleDOI
TL;DR: It is noteworthy that an overall trend of higher Cd(II) adsorption was observed on HA-TiO(2) compared to that on TiO( 2), implying that HA coating might modify bioavailability of heavy metals in aquatic environment.