A5050982343- Advanced Photocatalysis Techniques
- TiO2 Photocatalysis and Solar Cells
- Catalytic Processes in Materials Science
- Electrocatalysts for Energy Conversion
- Copper-based nanomaterials and applications
- Conducting polymers and applications
- Ionic liquids properties and applications
- Ammonia Synthesis and Nitrogen Reduction
- Electronic and Structural Properties of Oxides
- CO2 Reduction Techniques and Catalysts
- Electrochemical Analysis and Applications
- Quantum Dots Synthesis And Properties
- Transition Metal Oxide Nanomaterials
- Nanomaterials for catalytic reactions
- Chalcogenide Semiconductor Thin Films
- Advanced Nanomaterials in Catalysis
- Electrochemical sensors and biosensors
- Microplastics and Plastic Pollution
- Advanced battery technologies research
- Gas Sensing Nanomaterials and Sensors
- Machine Learning in Materials Science
- Caching and Content Delivery
- Electron and X-Ray Spectroscopy Techniques
- 2D Materials and Applications
- Lubricants and Their Additives
University of Nottingham
2021-2025
Park University
2025
Universidade Federal do Rio Grande do Sul
2014-2023
Centro de Tecnologias Estratégicas do Nordeste
2022-2023
Brazilian National Association of Graduate Programs in Communication
2016
Synergistic magic: copper single atom and nanocrystalline carbon nitride for selective CO 2 to methanol conversion.
Hydrogen (H2) has emerged as a sustainable energy carrier capable of replacing/complementing the global carbon-based matrix. Although studies in this area have often focused on fundamental understanding catalytic processes and demonstration their activities towards different strategies, much effort is still needed to develop high-performance technologies advanced materials accomplish widespread utilization. The main goal review discuss recent contributions H2 production field by employing...
Atomic-scale changes can significantly impact heterogeneous catalysis, yet their atomic mechanisms are challenging to establish using conventional analysis methods.
The incorporation of Ag nanoparticles onto BiVO4 (a known H2O oxidising photocatalyst) through magnetron sputtering to form a composite was studied. ICP-OES results showed that the loading on below 1% in all cases. UV-Vis DRS and CO2-TPD analyses demonstrated upon BiVO4, an increase extent visible light absorption CO2 adsorption seen. TEM imaging presence particles surface larger particles, while XRD analysis provided evidence for some doping into lattices. effect formation activity...
The efforts to increase the active surface area of catalysts led reduction metal particle size, down single atoms.
Magnetron sputtering offers a single-step, flexible, and environmentally friendly fabrication route to catalyst production, avoiding the requirement for complex syntheses or toxic chemicals normally required more traditional wet chemical techniques. Using this facile method, nanocluster platinum-on-carbon black is fabricated, rigorously characterized physically electrochemically, compared well-understood commercial (TKK). Scanning transmission electron microscopy (STEM) imaging reveals mean...
Perovskite‐based solar cells (PSCs) are some of the most promising devices for capturing photovoltaic energy. Efficiency has increased from single digits to a certified 25.7%, an unprecedented improvement any cell technology. Incorporating carbon materials into perovskite promises be revolutionary in field by increasing stability, decreasing manufacturing costs, and making them attractive commercialization. Here, overview advances carbon‐based (C–PSCs) that incorporate different as back...
The production of atomically dispersed metal catalysts remains a significant challenge in the field heterogeneous catalysis due to coexistence with continuously packed sites such as nanoclusters and nanoparticles. This work presents comprehensive guidance on how increase degree atomization through selection appropriate experimental conditions supports. It is based rigorous macro-kinetic theory that captures relevant competing processes nucleation formation single atoms stabilized by point...
Herein, we have developed a new biopolymer gel electrolyte based on xanthan, material widely used in the food and pharmaceutical industry. The incorporation of ionic liquids 1-butyl-2,3-dimethylimidazolium iodide (BMMI.I) 1-ethyl-2,3-dimethylimidazolium (EMMI.I) has significantly enhanced conductivity by 136% 181%, respectively. These possess substantial permanent dipole moment, which can induce alignment other dipoles around them, through conformational changes. interplay between liquid...
Abstract A key strategy for minimizing our reliance on precious metals is to increase the fraction of surface atoms and improve metal-support interface. In this work, we employ a solvent/ligand/counterion-free method deposit copper in atomic form directly onto nanotextured graphitized carbon nanofibers (GNFs). Our results demonstrate that under these conditions, coalesce into nanoparticles securely anchored graphitic step edges, limiting their growth 2–5 nm. The resultant hybrid Cu/GNF...
TiO 2 /SiO nanoparticles with 3, 5, and 10 molar percent of silica, were synthesized by hydrothermal method characterized SEM, TEM, N adsorption-desorption isotherms, X-ray diffraction, Raman UV-Vis spectroscopy. While pristine thermally treated at 500°C presents a surface area 36 m g -1 (±10 ), containing silica present areas 93, 124, 150 respectively. SiO is found to form very small amorphous domains well dispersed in the matrix. diffraction spectroscopy data show that anatase-to-rutile...
In this work we show that phase formation and oxygen substitution can be controlled by the source of nitrogen used during synthesis TiO<sub>2</sub> nanoparticles.
Atomically-dispersed metal catalysts (ADMCs) on surfaces have demonstrated high activity and selectivity in many catalytic reactions.
The optoelectronic properties of quantum dots are strongly controlled by the chemical nature their surface-passivating ligands. In this work, we present synthesis, characterization, and surface modification CdSe (QDs) application in solar cells. QDs were capped oleic acid (OA), 3-mercaptopropionic (MPA), 4-mercaptobenzoic (MBA). characterized transmission electron microscopy (TEM), UV-Vis absorption emission spectrophotometry, thermogravimetric analyses, 1 H 13 C NMR. From TEM analysis, it...
In this work, we show the effect of thermal treatment temperature on photoelectrochemical (PEC) activity CdSe/TiO2 nanocomposites. TiO2 nanotubes (NTs) were synthesized by anodization and nanocomposites obtained depositing CdSe clusters via magnetron sputtering. A two-step was performed: heating NTs at different temperatures prior to deposition further The characterized Rutherford backscattering spectroscopy (RBS), scanning electron microscopy (SEM), transmission (STEM), high-resolution...
Fluorinated ionic liquids are used to finely control the exposure of {112} facets on TiO 2 surface enabling an exquisite temperature anatase-to-rutile phase transition.
In this work, cyclometalated iridium(III) complexes were synthesized, presenting a general formula [Ir(ppy)2(N N)]PF6, where ppy=2-phenylpyridine or 2-(2,4-difluorophenyl)pyridine and N N=4,4′-bis(diethylphosphonate)-2,2′-bipyridine 4,4′-bis(carboxy)-2,2′-bipyridine. The characterized by 1H-NMR, 13C-NMR 31P-NMR UV-Vis spectroscopy. assembled Dye Sensitized Solar Cells current versus potential curves photon-to-current conversion efficiency measurements. present intense absorption bands in the...
<title>Abstract</title> Minimizing our reliance on bulk precious metals is to increase the fraction of surface atoms and improve metal-support interface. In this work, we employ a solvent/ligand/counterion-free method deposit copper in atomic form directly onto nanotextured graphitized carbon nanofibers (GNFs). Our results demonstrate that under these conditions, coalesce into nanoparticles securely anchored graphitic step edges, limiting their growth 2–5 nm. The resultant hybrid Cu/GNF...