A5019680063- Conducting polymers and applications
- Analytical Chemistry and Sensors
- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Transition Metal Oxide Nanomaterials
- Electrocatalysts for Energy Conversion
- Gas Sensing Nanomaterials and Sensors
- Advanced Sensor and Energy Harvesting Materials
- Gold and Silver Nanoparticles Synthesis and Applications
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Supercapacitor Materials and Fabrication
- Advanced biosensing and bioanalysis techniques
- Catalytic Processes in Materials Science
- Science and Science Education
- Copper-based nanomaterials and applications
- Molecular Junctions and Nanostructures
- Fuel Cells and Related Materials
- Pigment Synthesis and Properties
- Advanced Nanomaterials in Catalysis
- Nanomaterials for catalytic reactions
- CO2 Reduction Techniques and Catalysts
- Advanced Chemical Sensor Technologies
- Electrophoretic Deposition in Materials Science
- Environmental Sustainability and Education
Universidade de São Paulo
2015-2024
Henry Royce Institute
2022
University of Manchester
2022
Instituto Butantan
2013-2022
Hospital Universitário da Universidade de São Paulo
2022
Universidade Cidade de São Paulo
2016
Laboratório Nacional de Ciência e Tecnologia do Bioetanol
2009-2010
Instituto de Psicologia Comportamental de São Carlos
2000
Pontifícia Universidade Católica de Campinas
1999
Universidade Federal de São Paulo
1997
Recently reported ruthenium (Ru)-based catalysts for the oxygen evolution reaction (OER) falling in Ru metal and compound subclasses are summarized with special emphasis being given to a discussion of activity/stability-enhancing strategies.
The reactions taking place during voltametric cycling of manganese oxides can be determined using in situ Raman spectroscopy. main difficulty for the oxide identification is to obtain relevant reference spectra because many possible compounds and, some these compounds, their instability laser beam. As a consequence, several modifications different tetra‐, tri‐ and divalent oxyhydroxides were carefully studied. electrochromic behavior three types oxides, two prepared by thermal oxidations...
Resonance Raman, ESR, and UV−vis−NIR techniques were used to characterize the secondary doping process in polyaniline (PANI). Experimental results obtained with first two showed transformation of diamagnetic quinoid segments into radical semiquinone units while experiments increase free carriers concentration due extended conformation. Thermal effects on primarily secondarily doped also studied by TGA, techniques. The appearance new Raman bands temperature was assigned formation...
Optimization of the efficiencies both macroscale mass transport and microscale electron transfer is highly desired for achieving high-performance electrocatalysts but still remains a great challenge. Herein, facile topological conversion method developed to synthesize novel O-incorporated CoP derivative (denoted as Co–P–O) with directed effects, which benefits from its hierarchical porous structure internal atomic n-p homojunction, respectively. As result, Co–P–O achieves optimal hydrogen...
Prussian blue (PB) particles with the size of ca. 5 nm were synthesized and immobilized in a multilayer structure, as strategy for potential development an amperometric transducer oxidase-enzyme-based biosensors. Multilayer films composed PB poly(allylamine hydrochloride) (PAH) prepared via layer-by-layer (LbL) sequential deposition. The process was carefully monitored by UV-vis spectroscopy cyclic voltammetry. increase redox current peaks during deposition demonstrated that charge...
State of the art electrocatalysts for hydrogen evolution reaction (HER) are based on metal nanoparticles (NPs). It has been shown that localized surface plasmon resonance (LSPR) excitation in plasmonic NPs can be harvested to accelerate a variety molecular transformations. This enables utilization visible light as an energy input enhance HER performances. However, most metals active toward do not support LSPR or near-IR ranges. We describe herein synthesis gold–rhodium core–shell nanoflowers...
Nanoparticles of a Prussian blue (PB) analogue, copper hexacyanoferrate, were synthesized by using ultrasonic radiation and characterized spectroscopic electrochemical techniques. The nanoparticles (ca. 10 nm diameter) immobilized onto transparent indium tin oxide electrodes electrostatic layer-by-layer deposition. These modified showed interesting electrochromic properties, changing the coloration during redox process from brown to orange when oxidized. nanostructured electrode presented...
By a combination of theoretical and experimental design, we unraveled the effect {111} {100} surface facets on electrocatalytic sensing activities stabilities metal oxides by employing Cu2O crystals as model substrate glucose analyte. We started theoretically investigating potential energy curves for interaction with facets. found that was significantly higher than Then, experimentally observed their performance displayed shape-dependent behavior. While catalytic followed order cubes >...
Electroactive biomaterials are a new generation of "smart" based on intrinsically conducting polymers (ICP). Among them, poly(3,4-ethylenedioxythiophene) (PEDOT), polypyrrole (PPy) and polyaniline (PANI) well known that present excellent electrical optical properties emerging as main candidates for potential biomedical applications. Additionally, the biodegradability is very useful desirable. In this context, biodegradable polyesters, such poly(D,L-lactic acid) (PDLLA), polycaprolactone...