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Cross-linked polyvinyl polymers versus polyureas as designed supports for catalytically active M0 nanoclusters : Part III. Nanometer scale structure of the cross-linked polyurea support EnCat 30 and of the PdII/EnCat 30 and Pd0/EnCat 30NP catalysts

Paolo Centomo、Marco Zecca、Alfonso Zoleo 等 7 位作者2009-01-01Physical Chemistry Chemical Physics

The cross-linked polyurea support EnCat 30, its related macromolecular complex Pd(II)/EnCat 30 and its related Pd(0)/EnCat 30NP nanocomposite are thoroughly investigated with SEM, TEM, ISEC and ESR in the solid state (SEM and TEM) and swollen state in THF (ISEC and ESR). Pd(II)/EnCat 30 and its related Pd(0)/EnCat 30N…

Metal complexes synthesis and propertiesConducting polymers and applicationsLuminescence and Fluorescent Materials

Magnetotransport of La0.5Ba0.5MnO3

M. Pękała、Vadym Drozd、Jean-François Fagnard 等 5 位作者2009-01-01Journal of Applied Physics

Physical properties of polycrystalline La0.5Ba0.5MnO3 are reported from low temperature (10 K) up to above room temperature. An aim has been to obtain microscopic parameters and to search for the characteristic lengths in terms of which one can discuss the interplay between magnetic, electric, and phonon excitations.…

Magnetic and transport properties of perovskites and related materialsRare-earth and actinide compoundsAdvanced Condensed Matter Physics

Characterizing Microporous PCL Matrices for Application of Tissue Engineering

Chih‐Chang Yeh、Yunting Li、Pei Hsiu Chiang 等 6 位作者2009-01-01Queensland's institutional digital repository (The University of Queensland)

Polycaprolactone (PCL) is a semicrystalline polymer and has been fabricated into various forms such as membranes, films, matrices, fibers, micro/nano particles, capsules and reservoir devices for drug delivery and tissue engineering due to its good biocompatibility. In this study, microporous PCL matrices (MPM) with 1…

Bone Tissue Engineering MaterialsElectrospun Nanofibers in Biomedical ApplicationsSilk-based biomaterials and applications

MULLITE GLASS CERAMICS PRODUCTION FROM COAL ASH AND ALUMINA BY HIGH TEMPERATURE PLASMA

N. Suriyanarayanan、Enrico Bernardo2009-01-01Padua Research Archive (University of Padova)

The waste and highly hazardous coal ash from the power plants is proved to be a potential source for the production of low cost mullite glass ceramics when mixed with alumina at very high temperatures produced by plasma. In this present work, the coal ash and alumina are mixed at different weight \npercentages and tre…

Advanced ceramic materials synthesisRecycling and utilization of industrial and municipal waste in materials productionAdvanced materials and composites

HCl as a Key Parameter in Size-Tunable Synthesis of SBA-15 Silica with Rodlike Morphology

Segoo Kang、Young Bae Chae、Jong‐Sung Yu2009-01-01Journal of Nanoscience and Nanotechnology

Highly ordered mesoporous SBA-15 silica particles with rodlike morphologies were synthetically controlled for the first time by adjusting hydrochloric acid concentration in the range of 0.1-5.0 M in the presence of block copolymer template under static condition but with no addition of inorganic salts. This work illus…

Zeolite Catalysis and SynthesisMesoporous Materials and CatalysisPolyoxometalates: Synthesis and Applications

Nitrogen oxide reaction with six-atom silver clusters supported on LTA zeolite

Amgalanbaatar Baldansuren、Rüdiger‐A. Eichel、Emil Roduner2009-01-01Physical Chemistry Chemical Physics

Silver containing catalysts were prepared by aqueous ion exchange of Ag(+) against Na(+) in an LTA zeolite. A well-defined paramagnetic cluster consisting of six equivalent silver nuclei was obtained after oxidation and hydrogen reduction. Continuous wave EPR demonstrates that the reduced Ag(6)(+) clusters are isolate…

Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceMagnetism in coordination complexes

Response of NiTi SMA wire electrically heated.

C. Zanotti、P. Giuliani、Ausonio Tuissi 等 5 位作者2009-01-01ESOMAT 2009 - 8th European Symposium on Martensitic Transformations

In the present work an experimental-numerical approach is used to study the thermo-mechanical behaviour of NiTi wire for defining what parameters are the most important in actuator designing. Tests were carried out heating, by an electrical current, a wire having a diameter of 150 m, under constant stresses of 200 MPa…

Advanced Thermoelectric Materials and DevicesShape Memory Alloy TransformationsAdhesion, Friction, and Surface Interactions

Spheroidal nanoparticles as nanoantennas for fluorescence enhancement

Ahmad Mohammadi、F. Kaminski、Vahid Sandoghdar 等 4 位作者2009-01-01International Journal of Nanotechnology

Nanoantennas made of spheroidal metal nanoparticles are studied as a function of several parameters, namely aspect ratio, volume, background index and metal. Single nanospheroids are analysed using the polarisability theory with radiative and depolarisation corrections, while double spheroids are investigated using th…

Gold and Silver Nanoparticles Synthesis and ApplicationsPlasmonic and Surface Plasmon ResearchNear-Field Optical Microscopy

A route to a Keggin-Type α-[(XIIIO4)Mo12O35(OH)]4− anion through an Anderson-type [XIII(OH)6Mo6O18]3− anion: X = Ga

Sadayuki Himeno、Satomi Murata、Kazuo Eda2009-01-01Dalton Transactions

From an aqueous Mo(VI)-Ga(III)-HCl system, a colourless complex was isolated as a K(+) salt, which consists of a hexaprotonated Anderson-type [Ga(OH)(6)Mo(6)O(18)](3-) anion. A yellow complex became kinetically stable by the presence of CH(3)CN at concentrations of 30-40% (v/v). The X-ray structural analysis revealed…

Metal-Organic Frameworks: Synthesis and ApplicationsPolyoxometalates: Synthesis and ApplicationsChemical Synthesis and Reactions

On the synthesis and properties of bulk ternary Cr 2 AlC ceramics

Weibing Zhou、Bingchu Mei、Jiawen Zhu2009-01-01OpenAlex

Dense bulk Cr2AlC was synthesized by hot-pressing of Cr, Cr3C2 and Al powders as starting materials. The phase composition was determined by X-ray diffraction (XRD), the microstructures of the samples were observed with a scanning electron microscope (SEM) and thermal, electrical as well as the mechanical properties a…

Intermetallics and Advanced Alloy PropertiesMXene and MAX Phase MaterialsInorganic Chemistry and Materials

Nanoparticle assembly on nanoplates

Jinhwa Heo、Young Wook Lee、Minjung Kim 等 5 位作者2009-01-01Chemical Communications

By using dithiol linkage or biological interaction, Au nanoparticles are readily assembled on the single-crystalline Au nanoplates with well-defined geometries.

Gold and Silver Nanoparticles Synthesis and ApplicationsQuantum Dots Synthesis And PropertiesNanocluster Synthesis and Applications

Concentration Behavior of Non-Metallic Impurities in Cu Rods Refined by Argon and Hydrogen Plasma-Arc Zone Melting

G. Lalev、Jae‐Won Lim、N. R. Munirathnam 等 7 位作者2009-01-01MATERIALS TRANSACTIONS

Removal of non-metallic impurities like O, N, C and S in 4N Cu rods by argon plasma-arc zone melting and hydrogen plasma-arc zone melting was investigated. The experimental results were discussed on the basis of thermodynamic estimation. Substantial removal of these impurities along the length of the Cu rods by argon…

Fusion materials and technologies

Isomeric periodic mesoporous organosilicas with controllable properties

Carl Vercaemst、Matthias Ide、Heiner Friedrich 等 6 位作者2009-01-01Journal of Materials Chemistry

The synthesis procedure for isomeric periodic mesoporous organosilicas with E-configured ethenylene bridges was investigated using the homemade pure E-isomer of 1,2-bis(triethoxysilyl)ethene. The pH, aging temperature and the presence of cosolvents played a key role in obtaining well-ordered mesoporous materials with…

Zeolite Catalysis and SynthesisMesoporous Materials and CatalysisPolyoxometalates: Synthesis and Applications

Phase behaviour in binary mixtures of ultrasoft repulsive particles

S. D. Overduin、Christos N. Likos2009-01-01Europhysics Letters (EPL)

We investigate the phase behaviour of binary mixtures consisting of two ultrasoft species labeled 1 and 2, using the liquid-state theory and the classical density functional theory. The interaction potentials of the two species belong to different classes of ultrasoft potentials that display a dramatically different p…

Material Dynamics and PropertiesTheoretical and Computational Physicsnanoparticles nucleation surface interactions

Electrical and thermal properties of 10 mol% Gd3+ doped ceria electrolytes synthesized through citrate combustion technique

Viswanathan Mangalaraja、S. Ananthakumar、Paulraj Manidurai 等 7 位作者2009-01-01Processing and Application of Ceramics

Nanocrystalline ceria electrolyte doped with 10 mol% gadolinia [Ce0.9Gd0.1O1.95] was synthesized by citric acid combustion technique involving mixtures of cerium nitrate oxidizer (O) and citric acid fuel (F) taken in the ratio of O/F=1. The as combusted precursors produced crystalline ceria particles upon calcination…

Catalytic Processes in Materials ScienceAdvancements in Solid Oxide Fuel CellsElectronic and Structural Properties of Oxides

Zintl phase as dopant source in the flux synthesis of Ba1−xKxFe2As2 type superconductors

Josiah Mathieu、Susan E. Latturner2009-01-01Chemical Communications

Use of the Zintl phase KSn as a source of potassium dopant in tin flux syntheses of Ba(1-x)K(x)Fe(2)As(2) allows for incorporation of large amounts of potassium with much less attack on reaction vessels compared to the use of elemental potassium as a reactant; it also enables further study of tin incorporation into th…

Corporate Taxation and AvoidanceIron-based superconductors researchIntellectual Capital and Performance Analysis

Suppressed conductance in a metallic graphene nanojunction

Haidong Li、Lin Wang、Yisong ZHENG2009-01-01Journal of Applied Physics

The linear conductance spectrum of a metallic graphene junction formed by interconnecting two gapless graphene nanoribbons is calculated. A strong conductance suppression appears in the vicinity of the Dirac point. We found that such a conductance suppression arises from the antiresonance effect associated with an edg…

Carbon Nanotubes in CompositesGraphene research and applicationsQuantum and electron transport phenomena

Clear evidence of electron delocalization: synthesis, structure, magnetism, EPR and DFT calculation of the asymmetric hexanickel string complex containing a single mixed-valence (Ni2)3+ unit

Isiah Po‐Chun Liu、Chi‐Fen Chen、Shao‐An Hua 等 7 位作者2009-01-01Dalton Transactions

This paper describes the physical properties of the (Ni(2))(3+) mixed-valence unit that is an excellent conductivity-enhanced tool for metal string complexes.

Magnetism in coordination complexesMolecular Junctions and NanostructuresOrganic and Molecular Conductors Research

Mechanically functional amyloid fibrils in the adhesive of a marine invertebrate as revealed by Raman spectroscopy and atomic force microscopy

Anika S. Mostaert、Rowena Crockett、G. C. Kearn 等 7 位作者2009-01-01Archivum histologicum japonicum

Amyloid fibrils are primarily known in a pathogenic context for their association with a wide range of debilitating human diseases. Here we show a marine invertebrate (Entobdella soleae) utilizes functional amyloid fibrils comparable to those of a unicellular prokaryote (Escherichia coli). Thioflavin-T binding and Ram…

Polymer Surface Interaction StudiesForce Microscopy Techniques and ApplicationsMarine Biology and Environmental Chemistry

One-step synthesis of functional chiral porous silica nanorods using an achiral surfactant

Hongmin Chen、Junhui He2009-01-01Dalton Transactions

Functional chiral porous silica nanorods have been synthesized by a one-step process. In this process, self-assembly of achiral cetyltrimethylammonium bromide (CTAB) and co-condensation of tetraethoxysilane (TEOS) and 3-mercaptopropyltrimethoxysilane (MPTS) took place simultaneously in basic solution under static cond…

Adsorption and biosorption for pollutant removalMesoporous Materials and CatalysisClay minerals and soil interactions