Showing papers in "Journal of Physics and Chemistry of Solids in 2014"

TL;DR: In this article, a novel g-C3N4/ZnO composite photocatalyst was synthesized from an oxygen-containing precursor by direct thermal decomposition urea in air without any other templates assistance.

TL;DR: In this paper, a model was proposed whereby the local electric field at Cr3+ created by the two neighboring antisite defects triggers the electron-hole separation and trapping upon excitation of Cr3+, which is equivalent to a photoinduced electron transfer from a donor to an acceptor (here G a Z n 0 °) observed in some molecular systems.

TL;DR: In this article, a facile synthesis of ZnO/Fe2O3 heterostructures based on the hydrolysis of FeCl3 was reported, where 2.9 nm-sized Fe2O-3 nanoparticles were assembled with ZnOs to form the heterostructure, which exhibited enhanced photocatalytic capabilities.

TL;DR: In this article, the effects of Dy substitution on structural distortion, magnetic and optical properties of BiFeO3 were examined by X-ray diffraction, Raman and UV-Visible spectroscopy.

TL;DR: In this paper, the dimensionless governing equations pertinent to the free vibration of a single-walled carbon nanotube due to a general magnetic field were derived using nonlocal Rayleigh beam theory and Maxwell's equations.

TL;DR: In this paper, the electrical properties and emission mechanisms of Zn-doped β-Ga 2 O 3 film grown by pulsed laser deposition through Hall effect and cathodoluminescence were studied.

TL;DR: In this paper, a one-pot hydrothermal method using thiourea as the sulfur source and reducing agent was used to synthesize a CuS/graphene composite for anode materials for lithium ion batteries.

TL;DR: In this paper, the dielectric loss tangent and electric modulus spectra have been analyzed for relaxation processes corresponding to the side groups rotation and the segmental motion of a poly(methyl methacrylate) (PMMA) chain, which confirm their fluctuating behaviour with sample preparation methods and also with change of MMT concentration.

TL;DR: In this paper, a simple synthesis of MFe 2 O 4 (where M = Zn, Mn and Co) nanostructures by a thermal treatment method, followed by calcination at various temperatures from 723 to 873 K polyvinyl pyrrolidon (PVP) was used as a capping agent to stabilize the particles and prevent them from agglomeration.

TL;DR: In this paper, the structure and morphology of the graphene foam/silver nanoparticles (GF/Ag) were investigated as electrodes for supercapacitors and the GF/Ag exhibited a significantly higher capacitive performance, including a specific capacitance value of (~110 Fg −1 ) and excellent cyclability in a three-electrode electrochemical cell.

TL;DR: In this paper, the influence of deposition time on structural, morphological and optical properties of nanocrystalline thin films of TiO2 on glass substrates was systematically investigated.

TL;DR: In this article, the x-ray diffraction pattern was consistent with the hexagonal phase of Ca 5 (PO 4 ) 3 OH referenced in JCPDS card number 73-0293, which indicated that Ca 2+ occupied two different lattice sites, referred to as Ca1 and Ca2.

TL;DR: In this paper, the dependence of atomic structure of Palladium nanoparticles on supports Al 2 O 3 and SiO 2 upon their size, changed from 1.3 to 10.5 µm, was studied by Pd K-edge EXAFS.

TL;DR: In this article, Raman et al. showed that the (La,Ce) co-doped sample possesses dense microstructure made of smaller particles, and the Raman study accounts for the weakening of the strong hybridization between Bi-O by the substitution of La and Ce ions.

TL;DR: In this paper, several alpha-boron type compounds may be useful as high-temperature semiconductors with decent carrier motilities, high electrical resistivity, good optical transparency, good stability under high radiation bombardment, and possess high neutron capture cross-sections.

TL;DR: In this paper, a combination of short-time ball milling and heating treatment was used to improve the thermoelectric properties of bi-doped magnesium silicide compounds.

TL;DR: In this article, graphitic carbon nitride (C3N4) and bismuth vanadate (BiVO4) composite photocatalysts were successfully synthesized by a facile hydrothermal method.

TL;DR: In this paper, a comprehensive study on size-dependent structural parameters of ZnO nanostructures (NSs) having a wide range of aspect ratios (AR: length/diameter).

TL;DR: In this paper, a hybrid polypyrrole (PPy)/α-Fe 2 O 3 nanocomposite films were fabricated by spin coating on a glass substrate and X-Ray diffraction analysis revealed the crystalline structure of α-Fe2O 3 nanostructures and the nanocom composites.

TL;DR: In this article, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), Fourier transform infrared (FT-IR) spectroscopy, and alternating current (AC) impedance spectroscopic techniques were used to characterize free-standing polymer electrolyte membranes based on poly(vinyl) pyrrolidone (PVP)/salt(LiBF 4 ) having different amounts of ionic liquid (IL) [EMIM][BF 4 ] were prepared and characterized by TGA, DTGA, and DSC.

TL;DR: In this paper, a coumarin chalcone 3-((2E)-3-(2-hydroxyphenyl) prop-2-enoyl)-4-hydroxy-2(H)-chromen-2.1 was synthesized using the Claisen Schmidt reaction by the condensation of 3-acetyl-4hydroxycoumarin and 2hydroxybenzaldehyde using a mild organic base.

TL;DR: In this article, the adsorption of OCN − (cyanato anion) on boron nitride (B 12 N 12 and B 16 N 16 ) nano-cages in terms of energetic, geometric, and electronic properties are studied using density functional theory calculations.

TL;DR: In this paper, a soft mechanochemical route from two starting combinations of powders: (1) Zn(OH)2/α-Fe2O3 and (2)Zn(O2O4/Fe(O3)3 mixed in a planetary ball mill was used for spinel phase formation.

TL;DR: In this paper, a two-step seeding and solution hydrothermal growth process was used for the growth of ZnO nanorod arrays, and the alignment control of ZNAs was systematically investigated.

TL;DR: In this article, the structural, cation distribution, electrical and magnetic studies of CoAlxFe2−xO4 (x = 0.0, 0.2,0.4, 0.,0.6, 0,0,0.,1) ferrites are presented.

TL;DR: In this paper, the CdS/CIGS interfaces were investigated by Transmission Electron Microscopy (TEM) and X-ray Photoelectron Spectroscopy (XPS).

TL;DR: In this paper, the Nyquist plot (i.e., imaginary vs real component of complex impedance) of the material exhibits the existence and magnitude of grain interior and grain boundary contributions in the complex electrical parameters of the compound depending on frequency, input energy and temperature.

TL;DR: A red-emitting phosphor NaSrB 5 O 9 :Eu 3+ was synthesized by employing a solid-state reaction (SSR) method as discussed by the authors.

TL;DR: In this paper, the photocatalytic activities of BiVO 4 /MWCNT nanocomposites were investigated by degrading methylene blue (MB) under visible-light irradiation.

TL;DR: Tetragonal CaMoO4 with various novel three-dimensional (3D) hierarchical architectures were successfully synthesized via a facile, efficient sonochemistry process in the absence of any surfactant or template as discussed by the authors.