A5027119034- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Electrocatalysts for Energy Conversion
- Gas Sensing Nanomaterials and Sensors
- Catalysis and Hydrodesulfurization Studies
- Electrochemical sensors and biosensors
- Molecular Sensors and Ion Detection
- nanoparticles nucleation surface interactions
- Thermal Expansion and Ionic Conductivity
- Hydrogen Storage and Materials
- Nanoporous metals and alloys
- Nanocluster Synthesis and Applications
- TiO2 Photocatalysis and Solar Cells
- Luminescence Properties of Advanced Materials
- ZnO doping and properties
- Advanced Polymer Synthesis and Characterization
- Pickering emulsions and particle stabilization
- Machine Learning in Materials Science
- Surfactants and Colloidal Systems
- Thermal and Kinetic Analysis
- Catalysts for Methane Reforming
- Transition Metal Oxide Nanomaterials
Instituto de Física La Plata
2018-2025
Universidade Federal do Rio Grande do Sul
2017-2025
Brazilian National Association of Graduate Programs in Communication
2018-2020
The presence of mesopores matters when choosing the optimal surface oxygen vacancy population for improved photocatalysis cerium oxide nanoparticles.
Hydrogen holds great promise as a cleaner alternative to fossil fuels, but its efficient and affordable storage remains significant challenge. Bimetallic systems, such Pd Ni, present promising option for storing hydrogen. In this study, using the combination of different cutting-edge X-ray electron techniques, we observed transformations Pd-Ni nanoparticles, which initially consist NiO-rich shell surrounding Pd-rich core undergo major transformation when they interact with During hydrogen...
In this work, the reduction properties of ceria (CeO2) used as support metallic nanoparticles (Au, Pd, Au0.9Pd0.1, and Au0.8Pt0.2) were elucidated. The catalysts exposed to a treatment in H2 atmosphere at 500 °C. situ X-ray absorption spectroscopy (in XAS) time-resolved XAS measurements Ce L3 edge probe local atomic order around atoms oxidation state. way, it was observed that supported improve process support. Moreover, is dependent on composition nanoparticle supported. By means Au Pt L2,3...
Dyes are routinely used in the textile and pharmaceutical industries, causing serious environmental issues by decreasing water quality. Photocatalysts for dye degradation, different acting mechanisms may occur during photodegradation process. In this study, Ni nanoparticles were heated to selected temperatures up 500 °C under an ambient atmosphere subsequently supported on SrTiO3. The samples characterized X-ray diffraction, small-angle scattering, transmission electron microscopy,...
Pt–CeO 2 interfaces with superhydrophobic and highly reducible CeO are designed improved properties for the RWGS reaction.
Abstract Metallic nanofoams offer enhanced surface area and reduced density compared to their bulk counterparts while keeping intrinsic metallic properties. This combination makes ideal for many applications, such as catalysis battery. However, the synthesis of is still challenging. work introduces a non-complex method Pd employing polar lipid structured sponge phase in water. The nanostructures were characterized using Scanning Electron Microscopy (SEM), Transmission (TEM), x-ray...
Inorganic nanoparticles that mimic the activity of enzymes are promising systems for biomedical applications. However, they cannot distinguish between healthy and damaged tissues, which could cause undesired effects. Natural avoid this drawback via activation triggered by specific biochemical events in body. Inspired strategy, we proposed an artificial cerium-based proenzyme system be activated to a superoxide dismutase-like form using H2O2 as trigger. To achieve goal, innovative easy...
Nowadays, CeO2–x (0 < x 0.5) nanoparticles are used for a wide range of applications, most them using high temperatures. Since the phase diagram differs from that corresponding bulk material and plays pivotal role in many transition exposed to CO atmosphere at 900 °C was probed by situ XRD measurements. The results show presence fluorite Cu2Se-like phases this temperature. During cooling process room temperature He atmosphere, turns metastable transforms back phase. occurs 1D, with...
Abstract The interaction between metal and oxides at the nanoscale is of uttermost importance in several fields, thus its enhancement highly desirable. In catalysis, performance nanoparticles dependent on a wide range properties, including shape that commonly considered stable during catalytic reaction. this study, reducible CeO 2‐ x are synthesized aiming to provide Cu/CeO nanoparticles, which classically active catalysts for CO oxidation It observed Cu changes reduction treatment (prior...
NiO nanofoams show improved results for hydrogen storage applications.
The development of thermally stable nanoparticles is utmost importance for applications like catalysis. In particular, Cu supported on metal oxides are easily deactivated under thermal treatments at low temperatures by sintering the nanoparticles. formation typically obtained with secondary drawbacks. this study, an alternative method avoiding proposed. based impregnation dithiol molecules oxide support before supporting able to avoid nanoparticle diffusion, thus decreasing coalescence rate....
The Ce 3d XPS data were analyzed with different sets of constraints and no significant change was observed both in the trend absolute values Ce( iii ) fraction reported.
Metal–Support Interactions The enhancement of the metal/metal oxide interaction is beneficial for a wide range applications at nanoscale. Besides, in catalytic applications, shape metallic nanoparticles plays pivotal role performance. In article number 2106583, Fabiano Bernardi and co-workers show existence 3D to 2D transformation Cu supported on CeO2 when exposed CO atmosphere 400 °C. changes improves interaction.