A5029467200- Magnetic Properties and Synthesis of Ferrites
- Catalysis for Biomass Conversion
- Supercapacitor Materials and Fabrication
- Catalysis and Hydrodesulfurization Studies
- Iron oxide chemistry and applications
- Zeolite Catalysis and Synthesis
- ZnO doping and properties
- Multiferroics and related materials
- Microwave Dielectric Ceramics Synthesis
- Photorefractive and Nonlinear Optics
- Luminescence Properties of Advanced Materials
- Transition Metal Oxide Nanomaterials
- Advanced Condensed Matter Physics
- Magnetic and transport properties of perovskites and related materials
- Mesoporous Materials and Catalysis
- Copper-based nanomaterials and applications
Universidade Federal Fluminense
2020-2024
Centro Brasileiro de Pesquisas Físicas
2024
Universidade do Estado do Rio de Janeiro
2017
Abstract Structural and electrochemical properties of bismuth ferrite nanostructures produced by pulsed laser deposition with various morphologies are reported. The also explored as electrode materials for high-performance supercapacitors. Scanning electron microscopy images revealed that were varying the background pressure (10 −6 , 0.01, 0.10, 0.25, 0.50, 1.0, 2.0 4.0 Torr) in chamber submitting them to a thermal treatment after at 500 ◦ C. as-deposited range from very compact thin-film...
Furfural is a platform molecule that can be catalytically converted using cascade series of reactions into levulinic esters, essential compounds used as fuel additives. Bifunctional catalysts containing Lewis and Brønsted acid sites such zeolites are commonly for these conversions. However, microporous often present diffusional restriction due to the size similarity furfural other molecules zeolites’ micropores. Thus, incorporating mesopores in materials through post-synthetic protocols...
Ultra-low-density BiFeO3 nanoparticles have been prepared by pulsed laser deposition and their structure magnetic properties studied. Annealing increases crystallinity the size of particles leading to an alteration properties, observed from studies evaluated using high-resolution transmission electron microscopy , selected area diffraction x-ray patterns analysis. Transmission results show that as-deposited annealed up 400 °C exhibit a orthorhombic distorted perovskite without secondary...