A5003844490- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Photochemistry and Electron Transfer Studies
- Polymer composites and self-healing
- Electron and X-Ray Spectroscopy Techniques
- Corrosion Behavior and Inhibition
- Spectroscopy and Quantum Chemical Studies
- Electrocatalysts for Energy Conversion
- Lignin and Wood Chemistry
- Copper-based nanomaterials and applications
- Spectroscopy and Chemometric Analyses
- Layered Double Hydroxides Synthesis and Applications
- Fuel Cells and Related Materials
- Thermal Expansion and Ionic Conductivity
- Concrete Corrosion and Durability
- Electrochemical sensors and biosensors
- Magnesium Oxide Properties and Applications
- Supercapacitor Materials and Fabrication
- Dye analysis and toxicity
- Organic Light-Emitting Diodes Research
- Porphyrin and Phthalocyanine Chemistry
- Gas Sensing Nanomaterials and Sensors
- Organic Electronics and Photovoltaics
- Advanced Sensor and Energy Harvesting Materials
- Analytical Chemistry and Sensors
Universidade Tecnológica Federal do Paraná
2011-2024
Universidade Federal do Paraná
2020-2021
Universidade Federal de São Carlos
1991-1992
Universidade de São Paulo
1991
We describe a study of the oxide films grown on platinum (Pt) electrode by anodization at 2.1 V in solution. These were studied before single λ ellipsometry (1) and cyclic voltammetry (2). Our present employed spectroscopic ellipsometer, thus allowed us to measure situ spectrum anodic film wavelength range 300 800 nm, various stages growth. show that both thickness optical can be solved each stage growth assuming highly absorbing thin (≅30 Å) adjacent metal surface, and, top it, second film,...
This study aims to use electrodes modified with bismuth films for the determination of zinc and cadmium. The film was electrodeposited ex situ on a composite carbon electrode polyurethane 2% metallic (2BiE) bar (CBE). were characterized by scanning electron microscopy energy dispersive spectroscopy. Through differential pulse anodic stripping voltammetry, 2BiE CBE containing showed limit detection (LOD) 5.56 × 10-5 3.07 g.L-1 cadmium 1.24 10-4 1.53 zinc, respectively. presence increased...
Organic dyes have been studied for applications in large-area, flexible, cheap, and efficient organic electronic devices. Among them, diketopyrrolopyrrole (DPP) has gained attention thanks to its planar structure, photochemical thermal stability, easy processability. Also, the electron-withdrawing nature of DPP makes application attractive synthesis donor–acceptor (D–A) copolymers, with appealing features such as tunable energy levels photophysical electrochemical properties. Inspired by...
The objective of the current research is to evaluate and compare corrosion protection efficiency microcapsules containing tung oil copaiba using stereoscopic images, electrochemical tests, open circuit potential (OCP), polarization curves (Tafel analysis). Carbon steel plates were painted with three different coating systems: (a) a system an automotive primer which served as control, (b) 3% oil, (c) oil. A crosscut was performed scalpel on surfaces promote release oils, after drying, cells...
Layered double hydroxides (LDH) are lamellar structures with positively charged laminates and charge-compensating interlayer anions. The ion-exchange capacity of LDHs makes them as promising hosts for corrosion inhibitor anions stimulus-responsive release self-healing anticorrosion. In the current work, loaded two different inhibitors (nitrogen oxides benzotriazole) were evaluated their autonomic protection against on carbon steel. Studies nitrogen oxide-loaded LDH (NOx-LDH) showed that...
The use of powdered from orange peel (Citrus sinensis) as low cost adsorbent for the removal dye Direct Blue 86, routinely used in textile industry, was objective this work.A porous structure compatible with adsorption molecules dimensions up to 15 micrometers verified characterization powder (OPP).The OPP answered ABNT NBR 2133 norm showing lower humidity content 8%.The ash indicated few impurities material, a value (2.79 ± 0.06)%.The methodology experiments did not allow quantification...
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