Magnetic and electric properties are investigated for the nanosized YMnO3 samples with different grain sizes (25 nm to 200 nm) synthesized by a modified Pechini method. It shows that magnetic and electric properties are strongly dependent on the grain size. The magnetic characterization indicates that with increasing grain size, the antiferromagnetic (AFM) transition temperature increases from ...

Ceria-titania solutions with compositions of Ce0.9Ti0.1O2 and Ce0.8Ti0.2O2 were prepared by the citric-acid (Pechini) method and characterized using x-ray diffraction (XRD) for structure, coulometric titration for redox thermodynamics, and water-gas-shift (WGS) reaction rates. Following calcination at 973 K, XRD suggests that the mixed oxides exist as single-phase, fluorite structures, although...

Cerium–manganese mixed oxides with compositions of Ce0.5Mn0.5O1.75 and Ce0.8Mn0.2O1.9 were prepared by the citric-acid (Pechini) method and their catalytic properties were compared to CeO2 and Mn2O3. The mixed oxides exhibited higher specific rates than either CeO2 or Mn2O3 for oxidation of both methane and nbutane. While XRD measurements of the mixed oxides suggested that the materials had pri...

The synthesis of ZnO-MgO nanocomposite via modified Pechini method was performed. crystalline structure and the morphology nanocrystals were studied by X-ray diffraction analysis scanning electron microscopy. study on kinetics diazo dye adsorption its photocatalytic decomposition surface It shown that rate process in aqueous solution is described a kinetic equation first order. application allo...

Perovskite samples of the LaMn1−xFexO3 (x = 0–1) series were prepared by Pechini method; their physicochemical properties studied using XRD, HRTEM, XPS, and BET, catalytic activity was estimated in nitrous oxide decomposition methane CO oxidation reactions. In reactions, all intermediate (0 < x 1) exhibited a lower normalized to unit surface area as compared extreme terms, whereas more activ...

This study aims to shed light on processing pathways towards functional silicate ceramics, which show some promise in various emerging applications, including dielectrics and bioactive implant materials. Polycrystalline ceramics of Neso, Soro Inosilicate families were synthesised by three different techniques: (i) a co-precipitation method, (ii) modified sol-gel method (iii) standard solid-stat...