Highly-Efficient Reusable [Silica@Iminophosphine-Fe] Hybrids for Hydrogen Production via Formic Acid and Formaldehyde Dehydrogenation.

The use of hybrids, developed by grafting homogeneous catalysts onto supporting materials, has already demonstrated significant potential in various catalytic processes. These systems combine the advantages of homogeneous catalysts, such as high activity and selectivity, with those of solid supports, including enhanced recyclability. Catalytic hydrogen (H) production via dehydrogenation of C1 organic molecules targeting its use in fuel cells is a contemporary scientific issue directly connected with climate crisis.

Advanced Flame Spray Pyrolysis (FSP) Technologies for Engineering Multifunctional Nanostructures and Nanodevices.

Flame spray pyrolysis (FSP) is an industrially scalable technology that enables the engineering of a wide range of metal-based nanomaterials with tailored properties nanoparticles. In the present review, we discuss the recent state-of-the-art advances in FSP technology with regard to nanostructure engineering as well as the FSP reactor setup designs. The challenges of in situ incorporation of nanoparticles into complex functional arrays are reviewed, underscoring FSP's transformative potential in next-generation nanodevice fabrication.

Correlation of magnetic resonance (EPR, ssNMR) parameters and crystal-microstrain in marbles as a tool to probe their provenance.

Marbles constitute a significant family of materials, for antiquities, as well as modern constructions. Herein, we have studied Greek marbles, using electron paramagnetic resonance (EPR) and solid-state nuclear magnetic resonance (ssNMR) spectroscopies, focusing on their structural microenvironment. Spin-Hamiltonian parameters derived from EPR spectra of naturally occurring Mn ( = 5/2, = 5/2) atoms in marbles, were studied as structural-probes.

Non-graphitized carbon/CuO/Cu nanohybrids with improved stability and enhanced photocatalytic H production.

CuO is a highly potent photocatalyst, however photocorrosion stands as a key obstacle for its stability in photocatalytic technologies. Herein, we show that nanohybrids of CuO/Cu nanoparticles interfaced with non-graphitized carbon (nGC) constitute a novel synthesis route towards stable Cu-photocatalysts with minimized photocorrosion. Using a Flame Spray Pyrolysis (FSP) process that allows synthesis of anoxic-Cu phases, we have developed in one-step a library of CuO/Cu nanocatalysts interfaced with nGC, optimized for enhanced photocatalytic H production from HO.

Efficient [Fe-Imidazole@SiO] Nanohybrids for Catalytic H Production from Formic Acid.

Three imidazole-based hybrid materials, coded as IGOPS, IPS and impyridine@SiO nanohybrids, were prepared via the covalent immobilization of N-ligands onto a mesoporous nano-SiO matrix for H generation from formic acid (FA). BET and HRTEM demonstrated that the immobilization of the imidazole derivative onto SiO has a significant effect on the SSA, average pore volume, and particle size distribution. In the context of FA dehydrogenation, their catalytic activity (TONs, TOFs), stability, and reusability were assessed.