Ana C. Tavares

ORCID: 0000-0003-4657-781X
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About
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Research Areas
  • Electrocatalysts for Energy Conversion
  • Fuel Cells and Related Materials
  • Electrochemical Analysis and Applications
  • Advanced battery technologies research
  • Advancements in Solid Oxide Fuel Cells
  • Conducting polymers and applications
  • Advanced Battery Materials and Technologies
  • CO2 Reduction Techniques and Catalysts
  • Catalytic Processes in Materials Science
  • Advanced biosensing and bioanalysis techniques
  • Supercapacitor Materials and Fabrication
  • Electrochemical sensors and biosensors
  • Graphene research and applications
  • Analytical Chemistry and Sensors
  • Gas Sensing Nanomaterials and Sensors
  • Ionic liquids properties and applications
  • Transition Metal Oxide Nanomaterials
  • Organic Electronics and Photovoltaics
  • Membrane-based Ion Separation Techniques
  • Advanced Photocatalysis Techniques
  • Catalysis and Oxidation Reactions
  • Electron and X-Ray Spectroscopy Techniques
  • Advanced Thermoelectric Materials and Devices
  • Semiconductor materials and devices
  • Advancements in Battery Materials

Institut National de la Recherche Scientifique
2016-2025

Centre National pour la Recherche Scientifique et Technique (CNRST)
2007-2023

University of Coimbra
2022

Varian Medical Systems (Switzerland)
2016-2020

Universidade Federal do Paraná
2014-2018

Institute for Advanced Energy Technologies
2015

Hospital Prof. Dr. Fernando Fonseca
2013

Pirelli (Italy)
2002-2008

University of Milan
2000-2006

GTx (United States)
2001

This work describes the selection and identification of DNA aptamers that bind with high affinity specificity to okadaic acid (OA), a lipophilic marine biotoxin accumulates in shellfish. The selected using systematic evolution ligands by exponential enrichment (SELEX) exhibited dissociation constants nanomolar range. aptamer highest was then used for fabrication label-free electrochemical biosensor detection. first immobilized on gold electrode self-assembly approach through Au-S...

10.1021/ac402220k article EN Analytical Chemistry 2013-10-29

Abstract Hexagonal boron nitride (hBN) is a layered material with high thermal and chemical stability ideal for ultrathin corrosion resistant coatings. Here, we report the resistance of Cu hBN grown by vapor deposition (CVD). Cyclic voltammetry measurements reveal that layers inhibit oxygen reduction. We find CVD reduces rate one order magnitude compared to bare Cu, suggesting this layer can be employed as an atomically thin corrosion-inhibition coating.

10.1038/srep42139 article EN cc-by Scientific Reports 2017-02-13

Abstract Hydrogen peroxide (H 2 O ) is an oxidizing agent commonly used for various applications and available in aqueous solution a wide range of concentrations. This work describes the H electrogeneration process alkaline medium (KOH 1.0 mol L −1 ), using unmodified gas diffusion electrode (GDE) manufactured with Printex 6L carbon. The experiments were performed single‐compartment electrochemical cell equipped GDE as working electrode, which was fed N or at pressure 0.2 bar. Electrolysis...

10.1002/celc.201402426 article EN ChemElectroChem 2015-02-06

Abstract Oxygen reduction reaction (ORR) is an important electrochemical process for renewable energy conversion and storage applications such as fuel cells metal‐air batteries. ORR sluggish in kinetics requires a large amount of platinum group metal (PGM)‐based catalysts to facilitate its slow rate. Application precious metals raises the cost decreases competitivity these devices market. To address this challenge, PGM‐free have been intensively investigated alternative replace PGM‐based...

10.1002/cey2.73 article EN cc-by Carbon Energy 2020-08-18

Mixed SnO2−RuO2 oxides were prepared by high-energy mechanical alloying of various proportions pure SnO2 and RuO2 powders. The physicochemical characterization the resulting materials was conducted X-ray diffraction (XRD), scanning electron microscopy (SEM), photoelectron spectroscopy (XPS), electrochemical surface analysis. It is shown through XRD analysis that a single-phase (tetragonal) (Sn−Ru)O2 solid solution formed over whole composition range, in which Sn4+ Ru4+ ions share same...

10.1021/cm048129l article EN Chemistry of Materials 2005-02-19

Stable PtAu alloy colloids with a wide range of compositions were prepared using pulsed laser ablation on single metal-mixture targets in water. The concentration Pt the alloys can be tuned by varying Pt/Au ratio targets, which are made compression molding mixture and Au powders at different ratios. Such fabricated nanoparticles (NPs) show face-centered cubic structure, their composition basically follows that corresponding targets. effect aqueous solution pH ablating fluence formation...

10.1021/jp302485g article EN The Journal of Physical Chemistry C 2012-05-25

Stimuli-responsive drug delivery systems can release therapeutic agents when actuated by an appropriate stimulus, whether endogenous or exogenous. Interestingly, exogenous stimuli are completely dissociated from the patient's physiology and be precisely controlled externally in magnitude, space, time. They therefore constitute more reproducible means of controlling therapeutics appropriately responsive systems. One stimulus which has long attracted attention is application electric...

10.1039/c6tb00049e article EN Journal of Materials Chemistry B 2016-01-01

Diamond-like Fe<sub>3</sub>O<sub>4</sub> nanoparticle/graphene composites prepared by a facile and simple co-precipitation method exhibit outstanding electrochemical properties for LIBs/SIBs.

10.1039/c5ra25835a article EN RSC Advances 2016-01-01

Grafting of polyarylene layers on the surface Pb electrodes improves their selectivity for CO<sub>2</sub> reduction to formate.

10.1039/c8ta09637f article EN Journal of Materials Chemistry A 2019-01-01

Honeycomb porous Pb films with a dendrite-like secondary structure growing along the [100]-axis were prepared by Dynamic Hydrogen Bubble Templating (DHBT) and used for electroreduction of CO<sub>2</sub>.

10.1039/c7ta06528k article EN Journal of Materials Chemistry A 2017-01-01

Thiolated self-assembled reduced graphene oxide films were decorated with gold nanoparticles for development of a label-free p53-antibody immunosensor.

10.1039/c6an00044d article EN The Analyst 2016-01-01
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