A5009780201- CO2 Reduction Techniques and Catalysts
- Carbon dioxide utilization in catalysis
- Advanced Photocatalysis Techniques
- Ionic liquids properties and applications
- Catalysis and Oxidation Reactions
- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Covalent Organic Framework Applications
- Molecular Junctions and Nanostructures
- Ammonia Synthesis and Nitrogen Reduction
- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Electrochemical Analysis and Applications
- Ion-surface interactions and analysis
- Machine Learning in Materials Science
- nanoparticles nucleation surface interactions
- Crystallography and molecular interactions
- Catalytic C–H Functionalization Methods
- Crystallization and Solubility Studies
- Electrostatics and Colloid Interactions
- Copper-based nanomaterials and applications
- Conducting polymers and applications
- X-ray Diffraction in Crystallography
- Semiconductor materials and devices
National Interuniversity Consortium of Materials Science and Technology
2021-2024
University of Padua
2021-2024
Université Paris Cité
2016-2020
Laboratoire d'Electrochimie Moléculaire
2016-2020
Délégation Ile-de-France Villejuif
2020
Centre National de la Recherche Scientifique
2016-2019
Collège de France
2019
Réseau sur le Stockage Electrochimique de l'énergie
2019
Chimie du Solide et Energie
2019
Délégation Paris 7
2016-2018
Electrochemical and photochemical reduction of CO2, or a smart combination both, are appealing approaches for the storage renewable, intermittent energies may lead to production fuels value-added chemicals. By using only earth-abundant metal (Cu, Ni, Co, Mn, Fe) complexes, cheap electrodes and/or sacrificial electron donors visible light sensitizers, systems functioning with molecular catalysts have been recently designed, showing promising results, in particular, two-electron carbon...
The design of highly efficient and selective photocatalytic systems for CO2 reduction that are based on nonexpensive materials is a great challenge chemists. by [Co(qpy)(OH2)2](2+) (1) (qpy = 2,2':6',2″:6″,2‴-quaterpyridine) [Fe(qpy)(OH2)2](2+) (2) have been investigated. With Ru(bpy)3(2+) as the photosensitizer 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole sacrificial reductant in CH3CN/triethanolamine solution under visible-light excitation (blue light-emitting diode), turnover...
Efficient and selective photostimulated CO2-to-CO reduction by a photocatalytic system consisting of an iron-complex catalyst mesoporous graphitic carbon nitride (mpg-C3N4) redox photosensitizer is reported for the first time. Irradiation in visible region (λ ≥ 400 nm) CH3CN/triethanolamine (4:1, v/v) solution containing [Fe(qpy)(H2O)2]2+ (qpy = 2,2':6',2'':6'',2''-quaterpyridine) mpg-C3N4 resulted CO evolution with 97% selectivity, turnover number 155, apparent quantum yield ca. 4.2%. This...
[MII(qpy)(H2O)2]2+ (M = Fe, Co; qpy: 2,2′:6′,2″:6″,2‴-quaterpyridine) complexes efficiently catalyze the electrochemical CO2-to-CO conversion in acetonitrile solution presence of weak Brönsted acids. Upon performing cyclic voltammetry studies, controlled-potential electrolysis, and spectroelectrochemistry (UV–visible infrared) experiments together with DFT calculations, catalytic mechanisms were deciphered. Catalysis is characterized by high selectivity for CO production (selectivity >95%)...
The effect of a local proton source on the activity bromotricarbonyl Mn redox catalyst for CO2 reduction has been investigated. electrochemical behaviour novel complex [fac-Mn(dhbpy)(CO)3Br] (dhbpy = 4-phenyl-6-(1,3-dihydroxybenzen-2-yl) 2,2'-bipyridine), containing two acidic OH groups in proximity metal centre, under atmosphere showed sustained catalysis homogeneous solution even absence Brønsted acids.
Abstract The electrochemical behavior of fac ‐[Mn(pdbpy)(CO) 3 Br] (pdbpy=4‐phenyl‐6‐(phenyl‐2,6‐diol)‐2,2′‐bipyridine) ( 1 ) in acetonitrile under Ar, and its catalytic performances for CO 2 reduction with added water, 2,2,2‐trifluoroethanol (TFE), phenol are discussed detail. Preparative‐scale electrolysis experiments, carried out at −1.5 V versus the standard calomel electrode (SCE) ‐saturated acetonitrile, reveal that process selectivity is extremely sensitive to acid strength, producing...
Abstract The Na‐ion battery is recognized as a possible alternative to the Li‐ion for applications where power and cost override energy density performance. However, increasing instability of their electrolyte with temperature still problematic. Thus, central question remains how design Na‐based electrolytes. Here, discovery formulation reported which enlists four additives (vinylene carbonate, succinonitrile, 1,3‐propane sultone, sodium difluoro(oxalate)borate) in proper quantities that...
Abstract We report the study of two-dimensional graphitic carbon nitride (GCN) functionalized with copper single atoms as a catalyst for reduction CO 2 (CO2RR). The correct GCN structure, well adsorption sites and coordination Cu atoms, was carefully determined by combining experimental techniques, such X-ray diffraction, transmission electron microscopy, absorption, photoemission spectroscopy, DFT theoretical calculations. CO2RR products in KHCO 3 phosphate buffer solutions were rotating...
Abstract The invention of efficient systems for the photocatalytic reduction CO 2 comprising earth‐abundant metal catalysts is a promising approach production solar fuels. One bottleneck to design highly selective and robust molecular complexes that are able transform gas. Cu II quaterpyridine complex [Cu(qpy)] 2+ ( 1 ) found be catalyst visible‐light driven in CH 3 CN using [Ru(bpy) ] (bpy: bipyridine) as photosensitizer BIH/TEOA (1,3‐dimethyl‐2‐phenyl‐2,3‐dihydro‐1 H ‐benzo[ d...
Na-ion batteries are standing as a serious contender to the Li-ion technology for mass storage applications provided we fully master their chemistry, among which electrolyte is of paramount importance. It controls degree parasitic reaction that results in growth solid interface (SEI) governs battery performances terms capacity retention, lifetime, etc... Herein, show how cyclic voltammetry (CV) can be used rapidly spot hints decomposition and determine whether resulting species either...
Combination of experimental work and DFT calculations to establish the structural changes undergone by single Ni atoms stabilized in carbon nitride under OER conditions.
Abstract The effects of the highly fluorescent 4‐piperidinyl‐1,8‐naphthalimide (PNI) chromophore on CO 2 reduction catalytic properties rhenium‐based catalysts are investigated herein. In particular, electro‐ and photocatalytic features [Re(CO) 3 (bpy)Cl] (bpy = 2,2′‐bipyridine) compared with activity (phen–PNI)Cl] (phen 1,10‐phenanthroline), which is known for its long excited‐state lifetime. Moreover, another Re complex, namely (bpy–Ph–PNI)Cl], has been synthesized tested as an...
Abstract Tetracarbonyl complexes of low‐valent Group VI transition metals (Mo and W), containing diimine bidentate ligands, namely W(CO) 4 (4,6‐diphenyl‐2,2′‐bipyridine) ( 1 ), (6‐(2,6‐dimethoxyphenyl)‐4‐phenyl‐2,2′‐bipyridine) 2 Mo(CO) (2,2′‐dipyridylamine) 3 were synthesized tested as homogeneous catalysts for the electrochemical reduction CO in nonaqueous media. Cyclic voltammetry performed under a atmosphere, revealed that these have significant catalytic activity acetonitrile, gas...
The electrochemical catalytic reduction of CO2 into CO could be achieved with excellent selectivity and rate in acetonitrile the presence phenol cobalt 2,2′:6′,2″:6″,2‴-quaterpyridine complex [CoII(qpy)(H2O)2]2+ (Co) acting as a molecular catalyst. Upon using cyclic voltammetry at low high scan (up to 500 V/s) two pathways have been identified. At concentration (<1 M), catalysis mainly occurs after Co three electrons. In that case, for production is ca. 80% 20% H2 by product, along turnover...
A Fe quaterpyridine complex was used as a molecular precursor for the electrochemical reduction of CO2 to CH4 in acetonitrile presence triethanolamine. produced with faradaic yield approximately 2.1 % at 25 °C and 1 atm pressure reactant. Controlled potential electrolysis coupled ex situ X-ray photoelectron spectroscopy absorption electrode surface revealed formation metallic iron covered by oxides species responsible catalysis.
The development of active, selective, and durable (photo)electrocatalytic hybrid systems by combining molecular catalysts semiconductor substrates is crucial for efficiently converting solar light into high-value products. Herein, a one-step synthesis method to obtain carbon nitride (CN) nanosheets, which allows the direct covalent polymerization with catalysts, was developed. Copper-porphyrin (CuPor) units were embedded in CN structure as case-study. single materials fully characterized...
A one-step synthesis method to obtain a molecular catalyst-modified carbon nitride (CN) system was developed. Copper-porphyrin (CuPor) units were embedded in the CN structure as case-study. The single and hybrid materials fully characterized by physicochemical techniques tested (photo)electrocatalysts for CO2 reduction reaction (CO2RR). Experimental evidence confirmed an effective boost of photoelectrocatalytic activity introducing CuPor units. Formate identified only CO2RR product on both...