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Dispersive liquid–liquid microextraction based on Amine‐Functionalized Fe3O4 nanoparticles for the determination of phenolic acids in vegetable oils by high‐performance liquid chromatography with UV detection

24-Jun-2015 | Zhihong Shi, Lingna Qiu, Dan Zhang, Mengyuan Sun, Hongyi Zhang, Journal of Separation Science, 2015

A novel dispersive liquid–liquid microextraction method based on amine‐functionalized Fe3O4 magnetic nanoparticles was developed for the determination of six phenolic acids in vegetable oils by high‐performance liquid chromatography. Amine‐functionalized Fe3O4 was synthesized by a one‐pot ...


Biomedical Applications of Superparamagnetic Nanoparticles in Molecular Scale

24-Jun-2015 | Rahman, Masoud; A. Saei, Amir; Amiri, Houshang; Mahmoudi, Morteza, Organic Chemistry, 2015

Abstract: Magnetic nanoparticles and especially superparamagnetic iron oxide nanoparticles (SPIONs) have found innumerable applications in bioscience and biotechnology. Accommodation of active molecules and forming homogeneous dispersion in solution, combined with easy capture by external ...


First Evidence of Rh Nano-Hydride Formation at Low Pressure

24-Jun-2015 | Claudia Zlotea; Yassine Oumellal; Mariem Msakni; Julie Bourgon; Stéphane Bastide; Christine Cachet-Vivier; Michel La ..., Nano Letters, 2015

Rh-based nanoparticles supported on a porous carbon host were prepared with tunable average sizes ranging from 1.3 to 3.0 nm. Depending on the vacuum or hydrogen environment during thermal treatment, either Rh metal or hydride is formed at nanoscale, respectively. In contrast to bulk Rh that can ...


Photochemical Design of Stimuli-Responsive Nanoparticles Prepared by Supramolecular Host–Guest Chemistry

24-Jun-2015 | Astrid F. Hirschbiel; Bernhard V. K. J. Schmidt; Peter Krolla-Sidenstein; James P. Blinco; Christopher Barner-Kowollik, Macromolecules, 2015

We introduce the design of a thermoresponsive nanoparticle via sacrificial micelle formation based on supramolecular host–guest chemistry. Reversible addition–fragmentation chain transfer (RAFT) polymerization was employed to synthesize well-defined polymer blocks of poly(N,N-dimethylacrylamide) ...


Sizing Individual Au Nanoparticles in Solution with Sub-Nanometer Resolution

23-Jun-2015 | Sean R. German; Timothy S. Hurd; Henry S. White; Tony L. Mega, ACS Nano, 2015

Resistive-pulse sensing has generated considerable interest as a technique for characterizing nanoparticle suspensions. The size, charge, and shape of individual particles can be estimated from features of the resistive pulse, but the technique suffers from an inherent variability due to the ...


Colloidal Nanoparticles for Intermediate Band Solar Cells

22-Jun-2015 | Márton Vörös; Giulia Galli; Gergely T. Zimanyi, ACS Nano, 2015

The Intermediate Band (IB) solar cell concept is a promising idea to transcend the Shockley–Queisser limit. Using the results of first-principles calculations, we propose that colloidal nanoparticles (CNPs) are a viable and efficient platform for the implementation of the IB solar cell concept. ...


Shape‐Memory Polyurethane Nanocomposites with Single Layer or Bilayer Oleic Acid‐Coated Fe3O4 Nanoparticles

18-Jun-2015 | Hua Zou, Christoph Weder, Yoan C. Simon, Macromolecular Materials and Engineering, 2015

The present study aimed at developing a shape‐memory material, whose shape can be changed “on demand” upon application of an external magnetic field. Shape‐memory nanocomposites were thus prepared from a commercially available thermoplastic polyurethane (PU) with a “switching temperature” of ...


ChemInform Abstract: Low Temperature Synthesis and Characterization of Na—M—(O)—F Phases with M: Ti, V.

18-Jun-2015 | Jessica Nava‐Avendano, Jose A. Ayllon, Carlos Frontera, Judith Oro‐Sole, Marc Estruga, Elies Molins, M. Rosa Palacin, ChemInform, 2015

Abstract Agglomerates of spherical Na5‐δTi3O3‐ δF11+δ (δ ≈0.3) nanoparticles are obtained by repeated microwave heating of an aqueous solution of H2TiF6 and Na(OAc) in a domestic microwave oven (800 W, 20 s).


Matching the organic and inorganic counterparts during nucleation and growth of copper-based nanoparticles – in situ spectroscopic studies

17-Jun-2015 | Malwina Staniuk; Daniel Zindel; Wouter van Beek; Ofer Hirsch; Niklaus Kränzlin; Markus Niederberger; Dorota Koziej, CrystEngComm, 2015

Although syntheses in organic solvents provide access to a wide range of copper-based nanoparticles, the correlation between organic reactions in solution and nucleation and growth of nanoparticles with defined properties is not well understood. Here, we utilize the Multivariate Curve ...


Use of Carboxyl Functional Magnetite Nanoparticles as Potential Sorbents for the Removal of Heavy Metal Ions from Aqueous Solution

16-Jun-2015 | Ji Shi; Hanyang Li; Hongguang Lu; Xiaowei Zhao, Journal of Chemical & Engineering Data, 2015

In this work, carboxyl functionalized magnetite nanoparticles (CMNPs) are developed for the adsorption of Pb(II), Cd(II), and Cu(II). The characterization of CMNPs was performed by Fourier transform infrared spectroscopy, powder X-ray diffraction, and transmission electron microscopy. Studies ...


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