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TiO2/clay as a heterogeneous catalyst in photocatalytic/photochemical oxidation of anionic reactive blue 19

23-11-2014 | Author(s): Haithem Bel Hadjltaief , Maria Elena Galvez , Mourad Ben Zina , Patrick Da Costa, Arabian Journal of Chemistry, 2014

Publication date: Available online 10 November 2014 Source:Arabian Journal of Chemistry Author(s): Haithem Bel Hadjltaief , Maria Elena Galvez , Mourad Ben Zina , Patrick Da Costa A TiO2-coated Tunisian clay (TiO2–clay) was synthesized by a typical impregnation method. The ...


FeO0.7F1.3/C Nanocomposite as a High‐Capacity Cathode Material for Sodium‐Ion Batteries

20-11-2014 | Yong‐Ning Zhou, Mahsa Sina, Nathalie Pereira, Xiqian Yu, Glenn G. Amatucci, Xiao‐Qing Yang, Frederic Cosandey, Kyung ..., Advanced Functional Materials, 2014

Searching high capacity cathode materials is one of the most important fields of the research and development of sodium‐ion batteries (SIBs). Here, we report a FeO0.7F1.3/C nanocomposite synthesized via a solution process as a new cathode material for SIBs. This material exhibits a high initial ...


Modélisation par homogénéisation d'une colonne d'absorption réactive

19-11-2014 | Coralie Girard, Frédéric Couture, Jean‐Michel Reneaume, Pierre Cezac, The Canadian Journal of Chemical Engineering, 2014

RESUME Le garnissage d'une colonne d'absorption réactive est assimilé à un milieu poreux. Ainsi la modélisation des phénomènes de transports réactifs est basée sur une méthode d'homogénéisation par prise de moyenne volumique, technique originale pour le domaine. Le modèle est appliqué à ...


Anomalous diffusion of Ibuprofen in cyclodextrin nanosponge hydrogels: an HRMAS NMR study

19-11-2014 | Monica Ferro, Franca Castiglione, Carlo Punta, Lucio Melone, Walter Panzeri, Barbara Rossi, Francesco Trotta and And ..., Beilstein Journal of Organic Chemistry, 2014

Abstract Ibuprofen sodium salt (IP) was encapsulated in cyclodextrin nanosponges (CDNS) obtained by cross-linking of β-cyclodextrin with ethylenediaminetetraacetic acid dianhydride (EDTAn) in two different preparations: CDNSEDTA 1:4 and 1:8, where the 1:n notation indicates the CD to EDTAn ...


Impacts of Ionic Strength on Three-Dimensional Nanoparticle Aggregate Structure and Consequences for Environmental Transport and Deposition

19-11-2014 | Benjamin A. Legg; Mengqiang Zhu; Luis R. Comolli; Benjamin Gilbert; Jillian F. Banfield, Environmental Science & Technology, 2014

The transport of nanoparticles through aqueous systems is a complex process with important environmental policy ramifications. Ferrihydrite nanoparticles commonly form aggregates, with structures that depend upon solution chemistry. The impact of aggregation state on transport and deposition is ...


Cyclodextrins and Surfactants in Aqueous Solution above the Critical Micelle Concentration: Where Are the Cyclodextrins Located?

13-11-2014 | Marina Tsianou; Ankitkumar I. Fajalia, Langmuir, 2014

Cyclodextrins (CDs) are known to bind surfactant molecules below the surfactant critical micelle concentration (CMC); however, interactions of CDs with surfactant micelles (above the CMC) are not well understood. In particular, direct structural evidence of the location of CDs in the different ...


High adsorptive properties of covalent triazine-based frameworks (CTFs) for surfactants from aqueous solution

11-11-2014 | Asamanjoy Bhunia; Subarna Dey; Maria Bous; Chenyang Zhang; Wolfgang von Rybinski; Christoph Janiak, Chemical Communication, 2014

Carbonaceous covalent triazine-based frameworks from 1,4-dicyanobenzene (CTF-1) can adsorb up to about 4 g/g of the surfactants alkyl polyglycolether, C12EO7 and sodium dodecylsulfate, SDS from aqueous solution (c = 8.0 mmol L–1) which is more than 20-times the gravimetric uptake capacity of a ...


Quantification of Ion‐Pairing Effects on the Nucleophilic Reactivities of Benzoyl‐ and Phenyl‐Substituted Carbanions in Dimethylsulfoxide

10-11-2014 | Francisco Corral‐Bautista, Roland Appel, Johanna S. Frickel, Herbert Mayr, Chemistry - A European Journal, 2014

Abstract Second‐order rate constants for the reactions of acceptor‐substituted phenacyl (PhCOCH−Acc) and benzyl anions (PhCH−Acc) with diarylcarbenium ions and quinone methides (reference electrophiles) have been determined in dimethylsulfoxide (DMSO) solution at 20 °C. By studying the ...


Surface Modification of Poly(ether sulfone) Membrane with a Synthesized Negatively Charged Copolymer

07-11-2014 | Wen Zou; Hui Qin; Wenbin Shi; Shudong Sun; Changsheng Zhao, Langmuir, 2014

In this study, we provide a new method to modify poly(ether sulfone) (PES) membrane with good biocompatibility, for which diazotized PES (PES-N2+) membrane is covalently coated by a negatively charged copolymer of sodium sulfonated poly(styrene-alt-maleic anhydride) (NaSPS-MA). First, aminated ...


Purification, crystallization and preliminary crystallographic investigation of FrnE, a disulfide oxidoreductase from Deinococcus radiodurans

05-11-2014 | Lata Panicker, Hari Sharan Misra, Subhash Chandra Bihani, Acta Crystallographica Section F, 2014

In prokaryotes, Dsb proteins catalyze the formation of native disulfide bonds through an oxidative folding pathway and are part of the cell machinery that protects proteins from oxidative stress. Deinococcus radiodurans is an extremophile which shows unparalleled resistance to ionizing radiation ...


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