Eduardo De Oliveira Gomes

Universitat Jaume I | UJI · Department of Physical and Analytical Chemistry

All-solid-state lithium batteries (ASSLBs) have sparked interest due to their far superior energy density compared to current commercial material, but the heightened reactivity of the negative Li electrode can compromise...

Raman vibrational modes, temperature wavenumber coefficients, and isobaric‐mode Grüneisen parameters of the monoclinic alamosite (PbSiO 3 ) have been pioneeringly characterized by combining density functional theory calculation and in situ unpolarized Raman measurements. No structural phase transition was observed, corroborating the thermal stabili...

The chemical pressure approach offers a new paradigm for property control in functional materials. In this work, we disclose a correlation between the β → α pressure-induced phase transition in SnMoO4 and the substitution process of Mo6+ by W6+ in SnMo1-xWxO4 solid solutions (x = 0-1). Special attention is paid to discriminating the role of the lon...

Zn1-xNixO and Zn1-xFexO structures were synthesized by the microwave-assisted hydrothermal method. The best photocatalytic degradation of rhodamine B (RhB) and 4-nitrophenol (4-NP) were achieved by the Zn0.96Ni0.04O and Zn0.99Fe0.01O. The specificity of each dopant showed significance in the positions of the impurity energy levels, which ended up i...

Barium silicates may be found in contact aureoles and are used in several important technologies (e.g. LEDs). The BaO-SiO2 system stabilizes 13 crystalline phases with different silicate tetrahedral and connectivity profiles. Aside from phases composed of a single structural unit (isolated or homo-connected tetrahedra) one encounters the relatively...

In this work, the impact of the doping process on the photoluminescence emission of CaWO4 as a function of the concentration of Eu³⁺ cation (0.01 mol%, 0.02 mol%, 0.04 mol%, 0.06 mol%, 0.08 mol%, and 0.10 mol%) is discussed in detail. Ca1−xWO4:xEu³⁺ samples were successfully synthesized by a simple co-precipitation method followed by microwave irra...

Zirconia (ZrO2) has been intensively studied as an important ceramic material, and numerous technological applications have been found. The present work deals with synthesizing and characterizing the phase transition (cubic vs tetragonal) and photoluminescence emissions of ZrO2:xTb³⁺ (x=1, 2, 4 and 8 mol%). The samples formed by the complex polymer...

We report here the analysis of vibrational properties of the sanbornite (low-BaSi2O5) and Ba5Si8O21 using theoretical and experimental approaches, as well as results of high temperature experiments up to 1100–1150 degC. The crystal parameters derived from Rietveld refinement and calculations show excellent agreement, within 4%, while the absolute m...

In this work PbMoO4 and Pb1-2xCaxSrxMoO4 (x= 0.1, 0.2, 0.3, 0.4 and 0.5) solid solutions have been successfully prepared, for the first time, by a simple co-precipitation method and the as-synthesized samples were subjected to a water-based reflux treatment. Structural characterization of these samples was performed using X-ray diffraction with Rie...

In2O3 and La3+-doped In2O3 nanostructures were synthesized through a facile and fast chemical route based on the microwave-assisted hydrothermal method combined with rapid thermal treatment in a microwave oven. The presence of the La3+ doping process modifies the size and morphology of the In2O3 nanostructures and also stabilizes the rhombohedral (...

The density functional theory has become increasingly common as a methodology to explain the properties of crystalline materials because of the improvement in computational infrastructure and software development to perform such computational simulations. Although several studies have shown that the characteristics of certain classes of materials c...