Materials Literature
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The processing of polymers for blood contacting devices can have a major influence on surface properties. In this study, we fabricated poly(ether imide) (PEI) membranes and films to investigate the effects of the processing on physicochemical surface properties by atomic force microscopy (AFM), scanning electron micro…
-coated nanorods with a shell thickness of 6.5 nm were prepared by coating on anatase nanowires. These coated nanorods demonstrated a superior rate capability and capacity at higher C rates with respect to the nanowires. The volumetric capacity of the core-shell nanorods were 426 and at 0.5 and 20C rates, respectively…
OBJECTIVE To study the cytotoxicity of titanium dioxide nanoparticles (nano-TiO2)in neuroglia cells. METHODS ① In vitro, rat astrocytes were exposed to nano-TiO2 of 3 different diameters (10, 20 and 200 nm) at 5 different concentrations (6.25, 12.5, 25, 50 and 100 mg·L-1). Sulforhodamine B staining assay was carried o…
Cotton linters pulp was furnished as raw material for production of CMC. Cotton linters pulp was carboxymethylated at different temperatures and then cross-linked with epichlorohydrin. The water solubility for cross-linked CMC decreased gradually with increasing the reaction temperature. The influence of the CMC compo…
Effects of polyethylene-g-maleic anhydride (PE-g-MA) as a compatibilizer on tensile properties and morphology of low density polyethylene/thermoplastic sago starch (TPSS)-kenaf fibre composites were studied. TPSS was prepared by mixing the starch (65 wt%) and glycerol (35 wt%) and storing it overnight at room temperat…
A new polythiophene derivative was synthesized by electrochemical oxidative polymerization of 2,5-di(thiophen-2-yl)-1-(4-(thiophen-3-yl)phenyl)-1H-pyrrole (TTPP). The structure of the monomer was evaluated by 1H-NMR and FT-IR. The polymer (P(TTPP)) and its co-polymer with 3,4-ethylenedioxythiophene (P(TTPP-co-EDOT)) w…
The ethanol extract of leaf and flower of Spathodea campanulata was investigated for antimicrobial activity at 10 mg/ml concentrations by using Kirby-Bauer disc diffusion method against gram positive and gram negative organisms like Escherichia coli, Klebsiella pneumonia, Proteus vulgaris, Pseudomonas sps, Salmonella…
Rod-like ZnO micro-nanostructures have been synthesized by a solvothermal-assisted heat treatment method. The micro-nanostructures consist of polycrystalline nanoparticles with a hexagonal wurtzite structure. The diameter and length of the nanorods are about 90–150 nm and 0.6–3 μm, respectively. Nitrogen sorption isot…
Superparamagnetic mesoporous Mg-Fe bi-metal oxides with varied Mg-Fe atomic ratios have been successfully synthesized as solid base catalysts. The M2F-400 catalyst with Mg/Fe atomic ratio = 2 showed extraordinarily high activities for Knoevenagel reactions even at room temperature. It could be magnetically separated,…
The dynamic behavior of surface accommodated chlorine atoms on RuO(2)(110) was studied by a variety of experimental methods including high resolution core level shift, thermal desorption-, and in situ infrared spectroscopy as well as in situ surface X-ray diffraction in combination with state-of-the-art density functi…
Hollow magnetic graphitic carbon microspheres (HMGSs) with/without a TiO(2) nanoparticle layer on their surfaces are designed and synthesized by combining the bubble-template method, assembly of beta-cyclodextrin and Fe(3)O(4) stabilized by oleic acid and ammonia, and consequent graphitization reaction. HMGSs have pot…
Hydrolysis of glucono-δ-lactone (GδL) lowers the pH homogeneously throughout an aqueous solution. We exploit this non-invasive pH-trigger to prepare significant volumes of kinetically trapped, functional and responsive emulsion droplet assemblies—engineered emulsions—from highly stable polymer-functionalized emulsion…
When coupled modes are excited in a multilayered structure, the profile of the reflected beam presents exotic characteristics like unexpectedly large lateral shifts or beam enlargment. These results are surprising because they are not accounted for by classical approaches (Artmann’s formula or Tamir’s description of t…
We present a novel additive process, which allows the spatially controlled integration of nanoparticles (NPs) inside silicon surfaces. The NPs are placed between a conductive stamp and a silicon surface; by applying a bias voltage a SiO(2) layer grows underneath the stamp protrusions, thus embedding the particles. We…
Incorporating the BOLS correlation algorithm [Y. Sun, J. Phys. Chem. C, 2009, 113, 14696] into high-resolution XPS measurements [J. N. Andersen, et al., Phys. Rev. B: Condens. Matter, 1994, 50, 17525; A. Baraldi, et al., New J. Phys., 2007, 9, 143] has produced an effective way of determining the 3d(5/2) energy levels…
materials with varying from 0 to 20 (wt %) were prepared by mechanical alloying. For , the as-milled was made of an α-phase, whereas was formed at . Upon consolidation, a small amount of κ Ni/Fe-rich Al phase with a B2 structure is formed for and 10, whereas no new phase is formed in the other compounds. Aluminum elec…
In this work several crystal structure prediction problems which have been studied by first-principles evolutionary algorithms recently are revisited. We increased the system size to see how the search efficiency changes with respect to problem size. We find that the relative performance and underlying mechanism of ge…
The electronic structure of cobalt phthalocyanine (CoPc) changes upon encapsulation inside multi-walled carbon nanotubes (CoPc@MWNT), as detected in this research using Co-K-edge X-ray absorption near-edge structure spectroscopy (XANES) and Co-Kalpha(1) resonant inelastic X-ray scattering (RIXS). The CoPc molecules ar…
We present a combined experimental and theoretical investigation of the valence electronic structure of porphyrin-derived molecules. The valence photoemission spectra of the free-base tetraphenylporphyrin and of the octaethylporphyrin molecule were measured using synchrotron radiation and compared with theoretical spe…
Application of LaGaO3 based electrolyte for steam electrolysis was studied for the useful utilization of unused heat energy from steelmaking process. It was found that the H2 formation rate almost obeys the Faraday's law suggesting unity of oxide ion transport number in LaGaO3 perovskite under an electrolysis conditio…