A5010016680- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Photocatalysis Techniques
- Advanced Nanomaterials in Catalysis
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Catalytic Processes in Materials Science
- Electrocatalysts for Energy Conversion
- Machine Learning in Materials Science
- Crystallography and molecular interactions
- Nanocluster Synthesis and Applications
- Covalent Organic Framework Applications
- Lanthanide and Transition Metal Complexes
- Nanomaterials for catalytic reactions
- Ga2O3 and related materials
- 2D Materials and Applications
- Semiconductor materials and devices
- Crystallization and Solubility Studies
- Catalysis and Hydrodesulfurization Studies
École Polytechnique Fédérale de Lausanne
2018-2023
Massachusetts Institute of Technology
2022
Hôpital de Sion
2018-2020
Italian Institute of Technology
2020
Institut de Chimie
2020
Technical University of Crete
2016-2017
The present review showcases the scientific progress in field of dual-functional photocatalysis for hydrogen evolution coupled with oxidation chemical substances. Considering that is a promising alternative to fossil fuels, photocatalytic water splitting represents an approach produce using abundant solar energy. However, industrialization this process has not occurred yet, mainly due limitations related high cost, toxicity, poor stability, or low efficiency majority systems employed...
Abstract The impact of different transition metal‐based co‐catalysts toward photocatalytic water reduction when they are physically mixed with visible‐light active MIL‐125‐NH 2 is first systematically studied. All co‐catalyst/MIL‐125‐NH systems found to be highly stable after photocatalysis, the NiO/MIL‐125‐NH and Ni P/MIL‐125‐NH exhibiting high hydrogen (H ) evolution rates 1084 1230 µmol h −1 g , respectively. Second, how electron donors affect stability H generation rate best system...
We showcase the key role of co-catalyst when combined with MIL-125-NH<sub>2</sub> towards photocatalytic H<sub>2</sub> generation.
A strategy for enhancing the photocatalytic performance of MOF-based systems (MOF: metal–organic framework) is developed through construction MOF/MOF heterojunctions. The combination MIL-167 with MIL-125-NH2 leads to formation MIL-167/MIL-125-NH2 heterojunctions improved optoelectronic properties and efficient charge separation. outperforms its single components MIL-125-NH2, in terms H2 production (455 versus 0.8 51.2 μmol h–1 g–1, respectively), under visible-light irradiation, without use...
Herein, a novel integrated adsorption–photoreduction system, which captures highly mobile and toxic hexavalent chromium (Cr(<sc>vi</sc>)) from real-world water samples reduces it to less benign Cr(<sc>iii</sc>) species, was designed.
We report the use of two earth abundant molybdenum sulfide-based cocatalysts, Mo3S132- clusters and 1T-MoS2 nanoparticles (NPs), in combination with visible-light active metal-organic framework (MOF) MIL-125-NH2 for photocatalytic generation hydrogen (H2) from water splitting. Upon irradiation (λ ≥ 420 nm), best-performing mixtures Mo3S132-/MIL-125-NH2 1T-MoS2/MIL-125-NH2 exhibit high catalytic activity, producing H2 evolution rates 2094 1454 μmol h-1 gMOF-1 apparent quantum yields 11.0 5.8%...
Iridium nanoparticles deposited on a variety of surfaces exhibited thermal sintering characteristics that were very strongly correlated with the lability lattice oxygen in supporting oxide materials. Specifically, higher ions support, greater resistance to an oxidative environment. Thus γ-Al2O3 as rapid and extensive occurred. In striking contrast, when supported gadolinia-ceria alumina-ceria-zirconia composite, Ir underwent negligible sintering. keeping this trend, behavior found...
The photo-active MIL-125 and MIL-125-NH2 metal–organic frameworks (MOFs), despite having a very similar crystalline structure, exhibit different optical behaviors. Luminescence in decays about 1 ns, while for its amino counterpart, the lifetime of charge carriers is at least order magnitude larger. origin this difference key element understanding photocatalytic behavior when associated with active nanoparticles, that completely absent MIL-125. By performing advanced ab initio electronic...
Metal–organic frameworks (MOFs) constructed with mixed ligands have shown great promise in the generation of materials improved sorption, optical, and electronic properties. With an experimental, spectroscopic, computational approach, herein, we investigated how incorporation different functionalized within structure MIL-125-NH2 affects its performance photocatalytic water reduction. We found that multiligand MOF has impact on light absorption spectrum structure. These combined modifications...
Herein, we explored a simple metal–organic framework (MOF)-mediated synthesis for the controlled preparation of pure and mixed-phase titania (TiO2) nanoparticles. Scanning electron microscopy images revealed that MOF-derived TiO2 retains MOF crystal shape, through powder X-ray diffraction photoelectron spectroscopy, it is demonstrated template composed nanosized rutile anatase particles. The presence both phases in enhances interactions between them, thus suppressing electron–hole...
Understanding structure-property relationships in two-dimensional (2D) conductive metal-organic frameworks (2D cMOFs) is crucial for their targeted development and application devices. Although valuable correlations have been identified by comparing 2D...
Computational and experimental study into two families of lanthanide-based metal organic frameworks with the same ligand, tuned to have different structural optical properties.
Metal-Organic Framework (MOF)-derived TiO
We report a metal-organic framework (MOF) with rare two-dimensional (2D) secondary building unit (SBU). The SBU comprises mixed-valent Fe2+ and Fe3+ metal ions bridged by oxygen atoms pertaining to the polytopic ligand 3,3',4,4',5,5'-hexahydroxybiphenyl, which also define iron-oxide 2D layers. Overall, anionic exhibits topology evidences strong electronic communication between mixed-valence iron sites. These results highlight importance of dimensionality control MOF SBUs for discovering new...
Theoretical methodologies for the band alignment at MOF/co-catalyst/water systems revealing electronic and atomistic mechanisms underlying their photocatalytic performance.
Metal organic frameworks (MOFs) are increasingly used in applications that rely on the optical and electronic properties of these materials. These require a fundamental understanding how structure materials, particular interactions metal node linker, determines properties. Herein, we report combined experimental computational study two families lanthanide-based MOFs: Ln-SION-1 Ln-SION-2. Both comprise same ligand but with differing structural topologies. In Ln-SION-2 series absorption is...
Abstract We report a metal–organic framework (MOF) with rare two‐dimensional (2D) secondary building unit (SBU). The SBU comprises mixed‐valent Fe 2+ and 3+ metal ions bridged by oxygen atoms pertaining to the polytopic ligand 3,3′,4,4′,5,5′‐hexahydroxybiphenyl, which also define iron‐oxide 2D layers. Overall, anionic exhibits topology evidences strong electronic communication between mixed‐valence iron sites. These results highlight importance of dimensionality control MOF SBUs for...
The photoactive MIL-125 and MIL-125-NH$_{2}$ Metal-Organic Frameworks (MOFs), despite a very similar crystalline structure, exhibit different optically behaviour. Luminescence in decays about 1 ns while for its amino counterpart the lifetime of charge-carriers is at least one order magnitude larger. origin this difference key element understanding photocatalytic behaviour MIL-125-NH 2 when associated with active nanoparticles, that completely absent MIL-125. By performing advancedab-initio...
<div>The photoactive MIL-125 and MIL-125-NH$_{2}$ Metal-Organic Frameworks (MOFs), despite a very similar crystalline structure, exhibit different optically behaviour. Luminescence in decays about 1 ns while for its amino counterpart the lifetime of charge-carriers is at least one order magnitude larger. The origin this difference key element understanding photocatalytic behaviour MIL-125-NH<sub>2</sub> when associated with active nanoparticles, that completely absent...
<div>Metal organic frameworks (MOFs) are increasingly used in applications that rely on the optical and electronic properties of these materials. These require a fundamental understanding how structure materials, particular interactions metal node linker, determines properties. </div><div><br></div><div>Herein, we report combined experimental computational study two families lanthanide-based MOFs: Ln-SION-1 Ln-SION-2. Both comprise same ligand but with...