The methodology presented within this work is a result of years interactions between many junior and senior X-ray Photoelectron Spectroscopy (XPS) users operating the CasaXPS spectral processing interpretation program framework. In particular, discussions arising from series workshops have been significant source for developing overall XPS data concept are motivation creating work. These organized by Institut des Matériaux Jean Rouxel (IMN), Nantes gather both experienced novice week...

Recently there has been growing interest in the effects of antioxidants on insulin activity. In present study, we investigated effect metformin free radical activity and sensitivity high fructose-fed rats, a diet that leads to resistance. The animals were divided into four groups (n = 16 per group; experiment duration 6 weeks): control (C) group received standard diet; (CM) was fed (200 mg x kg(-1) day(-1) water); fructose (FT) which composed 56.8% total carbohydrates; (FM) high-fructose...

Spherical metallic nanoparticles have been formed in ${\mathrm{SiO}}_{2}$ layers by 160-keV implantation of Co ions at a fluence ${10}^{17}$ ${\mathrm{cm}}^{\ensuremath{-}2}.$ The implanted samples were next irradiated with $200\ensuremath{-}\mathrm{MeV}{}^{127}\mathrm{I}$ fluences ranging from ${10}^{11}$ to ${10}^{14}$ ${\mathrm{cm}}^{\ensuremath{-}2}$ room temperature. Modifications nanoparticle size and shape observed transmission-electron microscopy characterized magnetic measurements...

Nanoparticles of TiO2 crystallizing as anatase and TiO2(B) phases with different ratios were synthesized by a three step treatment including an initial reflux process in highly alkaline medium. For the first time, ratio each variety has been quantified analysing galvanostatic curves during lithium electrochemical insertion. The weight percentage reaches 95% (110 m2 g−1 specific surface area). In order to get quantitative information based on deduced from electrochemistry, same samples have...

Nanosized TiO(2)(B) has been investigated as a possible candidate to replace Li(4)Ti(5)O(12) or graphite the negative electrode for Li-ion battery. Nanoribbon precursors, classically synthesized in autogenous conditions at temperatures higher than 170 °C alkaline medium, have obtained, under reflux (T ∼ 120 °C, P = 1 bar). After ionic exchange, these nanoribbons exhibit surface area of 140 m(2) g(-1), larger those obtained by solid state chemistry. These nanoparticles transform after...

To get updated references on the structural, electronic, and vibration properties of metastable TiO2(B) compound, infrared Raman spectra are computed within density functional theory framework all active modes assigned. Phonons their possible coupling with macroscopic electric fields resulting from long-range interactions instantaneous local dipoles (due to nuclear vibrations) in polar solids taken into account through supercell calculations longitudinal optical-transversal optical splitting...

Titanium dioxide (TiO2) is a transition metal oxide widely used as white pigment in various applications, including food. Due to the classification of TiO2 nanoparticles by International Agency for Research on Cancer potentially harmful humans inhalation, presence food products needed be confirmed set independent studies. Seven samples food-grade (E171) were extensively characterised their size distribution, crystallinity and surface properties currently recommended methods. All investigated...

We recently synthesized new hybrid organic–inorganic sols and gel obtained by the slow hydrolysis of N,N-dimethylformamide (DMF) TiOCl2 acidic solution. The comprehension synthesis mechanism these materials, made up Ti–O framework surrounded organic molecules, is important to understand their original photochemical properties. use Raman spectroscopy provides information on role DMF for complexation Ti4+ its subsequent in dimethylammonium chloride (DMACl) methanoate species during...

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectrophotometric Determination of Rare EarthsJ. S. Fritz, M. J. Richard, and W. LaneCite this: Anal. Chem. 1958, 30, 11, 1776–1779Publication Date (Print):November 1, 1958Publication History Published online1 May 2002Published inissue 1 November 1958https://pubs.acs.org/doi/10.1021/ac60143a016https://doi.org/10.1021/ac60143a016research-articleACS PublicationsRequest reuse permissionsArticle Views360Altmetric-Citations44LEARN ABOUT THESE...

A remarkable and unprecedented increase in catalyst selectivity dendrimer catalysis is observed for the Pyrphos-Pd catalysed allylic amination of 1,3-diphenyl-1-acetoxypropene as a function generation (with up to 64 metal sites). This steady ee-values less pronounced poly(propyleneimine)-derived catalysts than corresponding palladium-PAMAM which an from 9% ee mononuclear reference system 69% Pd64-dendrimer was found.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron paramagnetic resonance and infrared studies of the genesis reactivity toward carbon monoxide nickel(1+) ions in a NiCa-X zeoliteM. Kermarec, D. Olivier, M. Richard, Che, F. Bozon-VerdurazCite this: J. Phys. Chem. 1982, 86, 15, 2818–2827Publication Date (Print):July 1, 1982Publication History Published online1 May 2002Published inissue 1 July...

Abstract The synthesis of Mn‐containing hydroxyapatite (HA) samples was carried out by precipitation from an aqueous solution with and without carbonate at pH 5.8−6.0. Chemical analyses have shown that Mn uptake (about 70%) is proportional to the amount initially added Mn. molar Ca/P ratios (1.53−1.63) indicate formation nonstoichiometric HA, higher values being obtained for carbonated samples. Powder X‐ray diffraction (XRD) IR spectroscopy well‐defined patterns structural data...

Suspensions of carbon blacks and spherical particles are studied experimentally numerically to understand the role particle shape on tendency percolation. Two commercial one lab-synthesized used. The percolation thresholds in suspensions determined by two complementary methods: impedance spectroscopy rheology. Brownian dynamics simulations performed explain experimental results taking into account fractal aggregates blacks. good agreement with allow behavior suspensions.

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTitration of Sulfate Following Sepration with AluminaJ. S. Fritz, Yamamura, and M. J. RichardCite this: Anal. Chem. 1957, 29, 1, 158–161Publication Date (Print):January 1957Publication History Published online1 May 2002Published inissue 1 January 1957https://pubs.acs.org/doi/10.1021/ac60121a049https://doi.org/10.1021/ac60121a049research-articleACS PublicationsRequest reuse permissionsArticle Views101Altmetric-Citations23LEARN ABOUT THESE...

In the present study, MoO3:MoS2 hybrid thin layers have been synthesized through partial oxidation of MoS2. We demonstrated that reaction requires darkness conditions to decrease rate, thus obtaining hybrid, MoO3:MoS2. A simple liquid-phase exfoliation (LPE) is carried out achieve homogenous MoS2 nanoflakes and high reproducibility results after oxidation. XPS analyses reveal presence MoO3, MoS2, MoOxSy in layer. These are also confirmed by X-ray diffraction high-resolution TEM. Optical...

High-quality Co2P nanoparticles have been obtained from diphosphine-substituted molecular cobalt clusters anchored into an inorganic matrix. The synthesis was followed stepwise using a wide panel of analytic techniques. required functionalization ordered mesoporous silica matrix the type SBA-15 achieved by covalent attachment alkoxysilyl-substituted short-bite diphosphine ligand (Ph2P)2N(CH2)3Si(OMe)3. Anchoring cluster [Co4(CO)10(μ-dppa)] (dppa = (Ph2P)2NH) led to organometallic hybrid...

We present the synthesis, characterization by DT-TGA and IR, single crystal X-ray nuclear structure at 300 K, magnetic from neutron powder diffraction on a deuterated sample 1.4 properties as function of temperature field Ni(3)(OH)(2)(SO(4))(2)(H(2)O)(2). The is formed chains, parallel to c-axis, edge-sharing Ni(1)O(6) octahedra, connected corners Ni(2)O(6) octahedra form corrugated sheets along bc-plane. are one another sulfate groups 3D network. measured ac dc magnetization, isothermal...