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Electrolyte ion adsorption and charge blocking effect at the hematite/aqueous solution interface: an electrochemical impedance study using multivariate data analysis

22-Apr-2015 | K. Shimizu; J. Nyström; P. Geladi; B. Lindholm-Sethson; J.-F. Boily, Physical Chemistry Chemical Physics, 2015

A model-free multivariate analysis using singular value decomposition is employed to refine an equivalent electrical circuit model in order to probe the electrochemical properties of the hematite/water interface in dilute NaCl and NH4Cl solutions using electrochemical impedance spectroscopy. The ...


Surface modification of monolithic PolyHIPE Polymers for anionic functionality and their ion exchange behavior

18-Apr-2015 | Necla Barlık, Bülent Keskinler, M. Muhtar Kocakerim, Galip Akay, Journal of Applied Polymer Science, 2015

ABSTRACT Monolithic PolyHIPE Polymer (PHP), being a highly porous, low density, open cellular material was produced by polymerization of a high internal phase emulsion (HIPE) in which the polymerizable continuous phase consisted of monomers, styrene (STY), and divinyl benzene (DVB). The inner ...


Synthesis and Self‐Assembly of o‐Nitrobenzyl‐Based Amphiphilic Hybrid Polymer with Light and pH Dual Response

16-Apr-2015 | Shasha Li, Sha Ji, Zheng Zhou, Guangxin Chen, Qifang Li, Macromolecular Chemistry and Physics, 2015

In this paper, novel light‐responsive polyhedral oligomeric silsesquioxane (POSS) end‐capped poly(o‐nitrobenzyl methacrylate) (POSS–PNBMA) are synthesized by the combination of atom transfer radical polymerization (ATRP) and click chemistry. After subsequent partial photocleavage of PNBMA ...


ChemInform Abstract: Intercalation of Highly Dispersed Metal Nanoclusters into a Layered Metal Oxide for Photocatalytic Overall Water Splitting.

16-Apr-2015 | Takayoshi Oshima, Daling Lu, Osamu Ishitani, Kazuhiko Maeda, ChemInform, 2015

Abstract KCa2Nb3O10 intercalated with Pt nanoclusters with diameters smaller than 1 nm is obtained by addition of an aqueous solution of [Pt(NH3)4]Cl2 to a suspension of KCa2Nb3O10, followed by precipitation with KOH, drying at 343 K overnight, and heating under H2 flow at 473 K.


Theoretical Study on Reaction Mechanisms of Nitrite Reduction by Copper Nitrite Complexes: Toward Understanding and Controlling Possible Mechanisms of Copper Nitrite Reductase

16-Apr-2015 | Shintaro Maekawa; Toru Matsui; Kimihiko Hirao; Yasuteru Shigeta, Journal of Physical Chemistry B, 2015

Using density functional theory, we studied denitrification reaction mechanisms of copper adducts of tris(pyrazolyl)methane and hydrotris(pyrazolyl)borate models of a copper nitrite reductase (Cu-NiR), and herein propose several possible reaction pathways, including some parts that have never ...


Kinetics and equilibria of the chromatographic separation of maltose and trehalose

15-Apr-2015 | Dengjun He, Jiachun Zhou, Quanming Xia, Lihua Jiang, Yongjun Qiu, Liming Zhao, Journal of Separation Science, 2015

Trehalose, a non‐reducing disaccharide, has been extensively applied to food, cosmetics and pharmaceutical goods. The resultant solution of trehalose prepared by enzymatic methods includes high amounts of maltose. However, it is quite difficult to separate maltose and trehalose on an industrial ...


Free‐radical polymerization of urea, acrylic acid, and glycerol in aqueous solutions

15-Apr-2015 | Bruno S. Fernandes, José Carlos Pinto, Elaine C.M. Cabral‐Albuquerque, Rosana L. Fialho, Polymer Engineering and Science, 2015

The main objective of the present study is to produce copolymers of urea, acrylic acid, and glycerol through aqueous solution free‐radical polymerizations and analyze the structural, thermal, rheological, and release properties of the obtained materials. To do this, aqueous solution ...


Thermal versus Microwave Inactivation Kinetics of Lipase and Lipoxygenase from Wheat Germ

14-Apr-2015 | Bin Xu, Li Kun Wang, Wen Juan Miao, Qi Fei Wu, Yan Xia Liu, Yilin Sun, Chao Gao, Journal of Food Process Engineering, 2015

Abstract The inactivation kinetics of enzymes is an important way to reveal the mechanism of enzyme inactivation by microwaves. In this paper, lipase (LA) and lipoxygenase (LOX) were treated by both microwave irradiation and conventional heating. A temperature‐controlled water bath was used ...


Membrane-Based Osmotic Heat Engine with Organic Solvent for Enhanced Power Generation from Low-Grade Heat

14-Apr-2015 | Evyatar Shaulsky; Chanhee Boo; Shihong Lin; Menachem Elimelech, Environmental Science & Technology, 2015

We present a hybrid osmotic heat engine (OHE) system that uses draw solutions with an organic solvent for enhanced thermal separation efficiency. The hybrid OHE system produces sustainable energy by combining pressure-retarded osmosis (PRO) as a power generation stage and membrane distillation ...


Kinetically Inert Bispidol-Based Cu(II) Chelate for Potential Application to 64/67Cu Nuclear Medicine and Diagnosis

13-Apr-2015 | Amandine Roux; Aline M. Nonat; Jérémy Brandel; Véronique Hubscher-Bruder; Loïc J. Charbonnière, Inorganic Chemistry, 2015

A family of 2,4-pyridyl-disubstituted bispidol derivatives bearing methylene carboxylic acid ethyl esters (L1–L3), methylene carboxylic acids (L4 and L5), or methylenethiophene (L6) groups were synthesized. In water, all ligands form rigid 1:1 complexes in the presence of Zn(II) in which the ...


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