A5078747289- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Ammonia Synthesis and Nitrogen Reduction
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- CO2 Reduction Techniques and Catalysts
- Catalytic Processes in Materials Science
- Electronic and Structural Properties of Oxides
- Advancements in Solid Oxide Fuel Cells
- Advanced Photocatalysis Techniques
- Magnetic and transport properties of perovskites and related materials
- Electrochemical Analysis and Applications
- Supercapacitor Materials and Fabrication
- Caching and Content Delivery
- Crystallography and molecular interactions
- Advanced biosensing and bioanalysis techniques
- Radical Photochemical Reactions
- Innovations in Concrete and Construction Materials
- Ionic liquids properties and applications
- Catalysis and Oxidation Reactions
- Metal-Catalyzed Oxygenation Mechanisms
- Photochromic and Fluorescence Chemistry
- Copper-based nanomaterials and applications
- Nanoporous metals and alloys
Institute for the Chemistry of OrganoMetallic Compounds
2014-2024
National Research Council
2014-2024
University of Trieste
2006-2024
National Academies of Sciences, Engineering, and Medicine
2015
National Interuniversity Consortium of Materials Science and Technology
2006-2009
University of Cagliari
2009
Abstract Here we review recent developments and technological advances in the field of electrochemical reduction carbon dioxide to fuels, energy carriers precursors other interesting building blocks for industrial applications. Synthetic hydrocarbon fuels derived from CO 2 /H O are proposed as alternatives hydrogen an carrier that enables a carbon‐neutral cycle, given their inherent advantages high H/C ratio convenience storage transportation. The represents feasible route direct generation...
The nature of radical defects governs the photocatalytic activity graphitic carbon nitride.
Recently LaNi1–xFexO3 materials have been indicated as good candidates for cathodes intermediate temperature solid oxide fuel cells (IT-SOFCs), and LaNi0.6Fe0.4O3 (LNF) showed the highest specific conductivity in series. Here we report results of our investigation on performances LNF, synthesized by coprecipitation method. A detailed local structure analysis, performed using X-ray absorption near edge spectroscopy (XANES ) extended fine (EXAFS) techniques, that both Fe Ni are (III) oxidation...
Improved performance through milling: A method for enhancing the catalytic activity of supported metal nanoparticles is reported. This enhances ethanol electro-oxidation a palladium catalyst. The much higher ascribed to increased electrochemically active surface area as well generation high-index facets at milled nanoparticle surface.
Abstract A 2 μm thick layer of TiO nanotube arrays was prepared on the surface Ti fibers a nonwoven web electrode. After it doped with Pd nanoparticles (1.5 mg cm −2 ), this anode employed in direct alcohol fuel cell. Peak power densities 210, 170, and 160 mW at 80 °C were produced if cell fed 10 wt % aqueous solutions ethanol, ethylene glycol, glycerol, respectively, M KOH. The loading increased to 6 by combining four single electrodes produce maximum peak density ethanol 335 . Such high...
Abstract Electrocatalytic oxygen reduction (ORR) is an emerging synthetic strategy to prepare H 2 O in a sustainable fashion. N‐doped graphitic carbon with embedded cobalt nanoparticles was selected as advanced material able selectively trigger the ORR form faradaic efficiency of almost 100 % at very positive applied potentials. The production proceeded high rates calculated by bulk electrolysis (49 mmol g −1 h ) and excellent current densities (≈−0.8 mA cm −2 0.5 V vs. reversible hydrogen...
A series of La1−xSrxNi0.6Fe0.4O3 mixed oxides were synthesized by a coprecipitation method, followed calcination at 1000 °C. Materials with x < 0.100 exhibited rhombohedral structure similar to that observed for La0.4Ni0.6Fe0.4O3, whereas materials between 0.125 and 0.150 orthorhombic. The unit-cell volume decreased linearly from = 0 0.090, but increased increasing Sr2+ content. still higher Sr content (x 0.200 0.300) additional XRD reflections indicating the limit solubility into...
We report a new synthetic approach for the preparation of small FeOx nanoparticles, formed on surface hollow N,O-doped carbon nanoshells through an "inside-out" mechanism. By control pyrolysis conditions, iron species can ex-solve from inside onto external surface, where they form stable nanoparticles. The location (endo- or exohedral) is correlated with observed switch product selectivity (from H2O2 to H2O) in electrocatalytic oxygen reduction reaction.
The use of graphitic carbon nitride (g-CN) for the photocatalytic radical formylation anilines, which represents a more sustainable and attractive alternative to currently used approaches, is reported herein. Our operationally simple method occurs under mild conditions, employing air as an oxidant. In particular, chemistry driven by ability g-CN reach electronically excited state upon visible-light absorption, has suitable potential energy trigger formation reactive α-amino species from...
Abstract Carbon nanotube (CNT)–modified surfaces unequivocally demonstrate their biocompatibility and ability to boost the electrical activity of neuronal cells cultured on them. Reasons for this effect are still under debate. However, intimate contact at membrane level between these thready nanostructures cells, in combination with unique properties, seems play an important role. The entire existing literature exploiting CNTs modulating cellular behavior deals cell cultures grown purified...
The exceptional and unique properties of cerium dioxide have encouraged scientists to exploit this material beyond its traditional role as a promoter in automotive engines. Electrochemical processes relevant fuel cells, electrolyzers, sensors can be facilitated or even directly catalyzed by the CeO2, whose redox are ideal for electrochemistry. However, given insulating nature pure ceria, inclusion conductive materials at boundary with metal oxide is necessary boost catalytic activity. Carbon...
Herein, we report a facile and flexible synthesis of porous highly faceted platinum nanoparticles (NPs) performed in the liquid phase. The is by reduction 2,4-pentantedionate presence oleylamine oleic acid dibenzyl ether at 200 °C. growth process was monitored time-course transmission electron microscopy (TEM), revealing peculiar progressive evolution that, comparison with previous methodologies, quite unusual. In fact, morphology evolves first through nanocubes, nanostars, dendrites to...
Abstract The Haber‐Bosch process for NH 3 production leads to a considerable greenhouse gas release due the remarkable use of fossil fuels. Therefore, there is an increasing interest in developing alternative and environmental friendly approaches. Among possible solutions, electrocatalytic conversion N 2 has recently gained significant attention; on other hand, not only scientific but also important technical aspects remain fundamental issues be clarified. Particularly relevant need improve...
The widespread industrial use of H2O2 has provoked great interest in the development new and more efficient materials for its detection. Enzymatic electrochemical sensors have drawn particular attention, primarily because their excellent selectivity. However, high cost, instability, complex immobilization, inherent tendency toward denaturation enzyme significantly limit practical usefulness. Inspired by powerful proton-catalyzed reduction mechanism peroxidases, we developed a well-defined...
Abstract Bis(methylphenylglyoximate)cobalt( III ) complexes exist both as cis and trans isomers due to the asymmetry of equatorial ligand, and, when axial ligands are different, isomer is chiral. The reaction racemic ‐[CH 3 Co(mpgH) 2 py] ( 1 with either 3‐ or 4‐pyridylboronic acid affords dimeric units arranged on a crystallographic symmetry center such that pyridyl nitrogen one moiety coordinates Co atom symmetry‐related unit. In principle, three structurally different species (two...
Carbon nanostructures (CNSs) are attractive components to attain nanocomposites, yet their hydrophobic nature and strong tendency aggregate often limit use in aqueous conditions negatively impact properties. In this work, carbon nanohorns (CNHs), multi-walled nanotubes (CNTs), graphene (G) first oxidized, then reacted covalently anchor the self-assembling tripeptide L-Leu-D-Phe-D-Phe improve dispersibility phosphate buffer, favor formation of hydrogels formed by self-organizing present...