Glass-Ceramic Materials with Luminescent Properties in the System ZnO-BO-NbO-EuO.

In this paper, the crystallization behavior of 50ZnO:47BO:3NbO:0.5EuO (G-0 h) glass has been investigated in detail by DSC, XRD and TEM analysis. The luminescent properties of the resulting glass-ceramics were also investigated.

The Influence of High-Energy Milling on the Phase Formation, Structural, and Photoluminescent Properties of CaWO Nanoparticles.

CaWO nanoparticles were obtained by facile mechanochemical synthesis at room temperature, applying two different milling speeds. Additionally, a solid-state reaction was employed to assess the phase composition, structural, and optical characteristics of CaWO. The samples were analyzed by X-ray diffraction (XRD), transition electron microscopy (TEM), and Raman, infrared (IR), ultraviolet-visible (UV-Vis) reflectance, and photoluminescence (PL) spectroscopies.

Structure Engineering of Ni/SiO Vegetable Oil Hydrogenation Catalyst via CeO.

Inspired by our finding that metallic Ni particles could be uniformly distributed on a reduced CeO surface and stabilized on Ce sites, we suppose a possible improvement in the activity and selectivity of the MgNi/SiO vegetable oil hydrogenation catalyst by increasing the surface metal Ni availability via modification by ceria. The proposed approach involved the addition of a CeO modifier to the SiO carrier and as a catalyst component. Evaluation of the structure, reducibility, and surface and electronic states of the CeO-doped MgNi/SiO catalyst was performed by means of the Powder X-ray diffraction (PXRD), Scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS), and X-ray photoelectron spectroscopy (XPS) combined with High-resolution transmission electron microscopy (HRTEM), Temperature-programmed reduction with hydrogen (H2-TPR), and H-chemisortion techniques.

A Novel Approach to Obtaining Metal Oxide HAR Nanostructures by Electrospinning and ALD.

In this work, a novel approach is suggested to grow bilayer fibers by combining electrospinning and atomic layer deposition (ALD). Polyvinyl alcohol (PVA) fibers are obtained by electrospinning and subsequently covered with thin AlO deposited at a low temperature by ALD. To burn the PVA core, the fibrous structures are subjected to high-temperature annealing.

Hydrogen Storage Properties of Ball Milled MgH with Additives- Ni, V and Activated Carbons Obtained from Different By-Products.

The hydrogen sorption of materials based on 80 wt.% MgH with the addition of 15 wt.% Ni or V and 5 wt.

Strong Magneto-Optical Kerr Effects in Ni-Doped ZnO Nanolaminate Structures Obtained by Atomic Layer Deposition.

The magneto-optical (MO) Kerr effects for ZnO and ZnO:Ni-doped nanolaminate structures prepared using atomic layer deposition (ALD) have been investigated. The chemical composition and corresponding structural and morphological properties were studied using XRD and XPS and compared for both nanostructures. The 2D array gradient maps of microscale variations of the Kerr angle polarization rotation were acquired by means of MO Kerr microscopy.

Environmentally Benign pSOFC for Emissions-Free Energy: Assessment of Nickel Network Resistance in Anodic Ni/BCY15 Nanocatalyst.

Yttrium-doped barium cerate (BCY15) was used as ceramic matrix to obtain Ni/BCY15 anode cermet for application in proton-conducting solid oxide fuel cells (pSOFC). Ni/BCY15 cermets were prepared in two different types of medium, namely deionized water (W) and anhydrous ethylene glycol (EG) using wet chemical synthesis by hydrazine. An in-depth analysis of anodic nickel catalyst was made aiming to elucidate the effect of anode tablets' preparation by high temperature treatment on the resistance of metallic Ni in Ni/BCY15-W and Ni/BCY15-EG anode catalysts.

Magneto-Optical and Muliferroic Properties of Transition-Metal (Fe, Co, or Ni)-Doped ZnO Layers Deposited by ALD.

ZnO doped with transition metals (Co, Fe, or Ni) that have non-compensated electron spins attracts particular interest as it can induce various magnetic phenomena and behaviors. The advanced atomic layer deposition (ALD) technique makes it possible to obtain very thin layers of doped ZnO with controllable thicknesses and compositions that are compatible with the main microelectronic technologies, which further boosts the interest. The present study provides an extended analysis of the magneto-optical MO Kerr effect and the dielectric properties of (Co, Fe, or Ni)-doped ZnO films prepared by ALD.

On the structures and luminescence properties of Eu -doped Li CaGeO , Ca GeO , and Ca Ge O compounds.

Powder samples of Li CaGeO , Ca GeO , and Ca Ge O doped by 0.5, 1, 2, 3, 4 and 5 at% Eu relative to the Ca , were prepared using a conventional solid-state synthesis technique. X-ray diffraction (XRD) analyses confirmed obtaining the pure phases at all dopant concentrations.