Showing papers in "Materials Research Bulletin in 2009"

TL;DR: In this article, the use of a rheological phase reaction method for preparing MoS2 nanoflakes was reported, and the characterization by powder X-ray diffraction indicated that MoS 2 had been formed.

TL;DR: In this article, a solution combustion synthesis method and impregnation technique were used to synthesize CuO/BiVO 4 composite photocatalysts for degradation of methylene blue under visible-light.

TL;DR: In this paper, the electrochemical capacitance of the as-prepared NiO was studied in 2M KOH electrolyte solution, due to higher surface area of NiO nanoflakes, which facilitates transport of electrolyte ions during rapid charge/discharge process.

TL;DR: In this paper, the structure, magnetic and dielectric properties of the double perovskite oxides, R2NiMnO6 (R = Pr, Nd, Sm, Gd, Tb, Dy, Ho and Y), were investigated.

TL;DR: In this paper, the authors investigated different visible-light irradiation's effect on the formation of silver nanoparticles from silver nitrate using the culture supernatant of Klebsiella pneumonia.

TL;DR: In this paper, the optical properties of ITO and FTO were studied by transmittance and reflectance measurements and the best electrical resistivity values were derived from optical measurements.

TL;DR: In this paper, a single-crystal X-ray diffraction study confirmed the monoclinic Li{sub 2}SnO{sub 3}-type structure, space group C2/c and the lattice parameters of a = 5.0623(5) A, b = 8.7876(9) A and c = 9.7533(15) A, {beta} = 100.212(11) deg., and V = 427.

TL;DR: In this article, the influence of the synthesis process on composition, thermal behaviour and sinterability of the resulting nanopowders is studied, and a systematic investigation on Si-substituted hydroxyapatite (Si 1.40 wt%) nanopowsders produced following two different conventional wet methodologies is reported.

TL;DR: In this article, the structural, morphological, electrical and sensing properties of nanostructured ZnO thin films were studied for different concentrations of Al-dopant and were analyzed as a function of rapid photothermal processing temperatures.

TL;DR: In this paper, the structure of an ultrasonically cast nanocomposite of Al with 2 wt.% nano-sized AlO{sub 2 O{sub 3} (average size {approx}10 nm) dispersoids was investigated by nanoindentation and tensile tests.

TL;DR: In this article, a series of ZnIn 2 S 4 photocatalysts were synthesized via a surfactant-assisted hydrothermal method, and the products were characterized with X-ray diffraction (XRD), UV-vis-near-IR diffuse reflectance spectra (UV-vis), photoluminescence spectra, and field emission scanning electron microscope (FESEM).

TL;DR: In this paper, a large-scale, well-aligned single crystalline TiO-sub 2 nanorod arrays were prepared on the pre-treated glass substrate by a hydrothermal approach.

TL;DR: In this paper, nitrogen-doped TiO2 nanotubes with enhanced photocatalytic activity were synthesized using titanate Nanotubes as raw material by a facile wet chemistry method.

TL;DR: In this article, α-Fe2O3 ceramic nanofibers were prepared by electrospinning polyvinyl alcohol)/Fe (NO3)3·9H2O composite nanofiber and followed by calcination.

TL;DR: In this article, three different methods for preparing BiFeO3 polycrystals are compared: hydrothermal synthesis, microwave heating in the solid state and the combination of both, that is a Hydrothermal method using microwave heating.

TL;DR: In this paper, various types of zeolites with different degrees of purity were prepared by changing Si/Al ratio of the reaction mixture from 1.6 to 3.0 and exact boundaries of this ratio for synthesis of each zeolite type were determined.

TL;DR: In this paper, the authors focused on the valence state of iron and the oxygen vacancies of the perovskites investigated by X-ray absorption spectroscopy and showed that the substitution of lanthanum by strontium leads to a corresponding increase of the iron valence states and thus to the formation of the Jahn-Teller Fe{sup 4+} ion.

TL;DR: In this paper, the photocatalytic activity of polyvinyl pyrrolidone and titanium isopropoxide composite fibers was investigated using ultraviolet-visible absorbance by following the photooxidative decomposition of methylene blue in comparison to the reference TiO2 powder Degussa P25.

TL;DR: In this paper, a facile solvothermal method using different divalent manganese source in the solvent of N,N-dimethylformamide (DMF) with/without the introduction of poly(vinylpyrrolidone) (PVP) was used as a co-reducing reagent in the controlled formation of MnCO3 crystal.

TL;DR: A simple pH-controlled drug release system was successfully prepared by coating pH-sensitive polymer hydroxypropyl methylcellulose phthalate (HPMCP) on drug-loaded mesoporous SBA-15 tablet.

TL;DR: In this article, the influence of different polyols (ethylene glycol, diethylene glycol and tetraethylenes glycol) on the size of the final particles (length and diameter) is presented for the first time.

TL;DR: In this paper, the structure, composition and morphology of hexagonal tungsten oxide (h-WO{sub 3} were studied by XRD, XPS, Raman, {sup 1}H MAS (magic angle spinning) NMR, scanning electron microscopy (SEM), and BET-N{sub 2} specific surface area measurement, while its thermal stability was investigated by in situ XRD.

TL;DR: In this paper, the effect of doping β-tricalcium phosphate with monovalent metal ions (lithium, sodium, and potassium ions) on its thermal stability was evaluated using the formation ratio of α -trical calcium phosphate and the rate constant for β-α transformation.

TL;DR: In this paper, the size of the CuO spheres can be selectively controlled to range from several hundred nanometers to a few micrometers simply by adjusting the concentration of the reactants.

TL;DR: In this article, rare earth orthophosphates such as monazite and xenotime RePO4 (RePO4) were prepared by a conventional solid-state reaction method and the crystal structure and microstructure of the sintered ceramics were investigated by X-ray diffraction and field emission scanning electron microscopy (FE-SEM) respectively.

TL;DR: In this article, the effect of varying the hydrothermal time to synthesize MnO 2 nanostructures and the forming mechanism of α-MnO2 nanorods were investigated by using XRD, SEM and TEM.

TL;DR: In this article, the synthesis of bismuth tungstate (Bi{sub 2}WO{sub 6}) multilayered disk which was constructed by oriented square nanoplates was easily realized via a simple surfactant-free hydrothermal method.

TL;DR: In this article, Ni-W-P-SiC nanocomposite coatings are electrodeposited from the plating solution containing suspension of nano-sized spherical and rod-shaped SiC particles.

TL;DR: Aligned ZnO nanorods and nanotubes were grown on the silicon substrates by thermal evaporation of high pure zinc powders without any other metal catalyst as mentioned in this paper.

TL;DR: In this article, samples of Sm and Mg co-doped ceria electrolytes were sintered from powders obtained by solid-state reaction method and the structures and electrical properties were characterized by X-ray diffraction (XRD) and AC impedance spectroscopy (IS).