Paolo Ghigna
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View article: Structural Water Accommodation in Co3O4: A Combined Neutron and Synchrotron Radiation Diffraction and DFT Study
Structural Water Accommodation in Co3O4: A Combined Neutron and Synchrotron Radiation Diffraction and DFT Study Open
Spinels like Co3O4 have acquired relevance because of their photocatalytic, electrocatalytic, optical and magnetic properties. In this context, we investigated the defect structure evolution of compounds synthetized using the nitrate precu…
View article: Merging Heterogeneous Graphitic Carbon Nitride Photocatalysis with Cobaloxime Catalysis in Uphill Dehydrogenative Synthesis of Anilines
Merging Heterogeneous Graphitic Carbon Nitride Photocatalysis with Cobaloxime Catalysis in Uphill Dehydrogenative Synthesis of Anilines Open
Synthesis of substituted anilines upon nucleophilic addition of secondary amines to cyclohexanone derivatives followed by aromatization of the enamine by employing a combination of Ir‐polypyridine complex as a photoredox catalyst and cobal…
View article: Understanding the stability of CuxO photocathodes for photoelectrochemical water splitting: Insights by operando XAS
Understanding the stability of CuxO photocathodes for photoelectrochemical water splitting: Insights by operando XAS Open
View article: Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> MXenes as Anodes for Sodium-Ion Batteries: the In Situ Comprehension of the Electrode Reaction
Ti<sub>3</sub>C<sub>2</sub>T<sub><i>x</i></sub> MXenes as Anodes for Sodium-Ion Batteries: the In Situ Comprehension of the Electrode Reaction Open
Since their appearance on the scene, MXenes have been recognized as promising anode materials for rechargeable batteries, thanks to the combination of structural and electronic features. The layered structure with a suitable interlayer dis…
View article: Beyond configurational entropy: the role of solubility equilibria in the stability of the system (Co,Cu,Mg,Ni,Zn)O
Beyond configurational entropy: the role of solubility equilibria in the stability of the system (Co,Cu,Mg,Ni,Zn)O Open
View article: Influence of ZIF-8 crystal growth interactions on C3N4 surface features and the consequences during CO2 photoreduction
Influence of ZIF-8 crystal growth interactions on C3N4 surface features and the consequences during CO2 photoreduction Open
View article: X-ray analysis of Mg <sub>0.2</sub> Co <sub>0.2</sub> Ni <sub>0.2</sub> Cu <sub>0.2</sub> Zn <sub>0.2</sub> O: disentangling elemental contributions in a prototypical high-entropy oxide
X-ray analysis of Mg <sub>0.2</sub> Co <sub>0.2</sub> Ni <sub>0.2</sub> Cu <sub>0.2</sub> Zn <sub>0.2</sub> O: disentangling elemental contributions in a prototypical high-entropy oxide Open
Using a series of X-ray techniques, we study the contributions of individual chemical species to the structural, electronic and magnetic properties of high-entropy oxides.
View article: Mechanisms of CO oxidation on high entropy spinels
Mechanisms of CO oxidation on high entropy spinels Open
Operando soft XAS allows assessing the mechanism of CO oxidation on high entropy spinels. It proceeds via CO reactive adsorption on surface Mn( iii ), reducing them to Mn( ii ). O 2 oxidizes CO, restoring Mn( iii ). The other transition me…
View article: Phase Stability of High Entropy (Mg,Ni,Co,Cu,Zn)O from Temperature‐Resolved Synchrotron Diffraction: Tetragonal Distortion and Guggenite Phase
Phase Stability of High Entropy (Mg,Ni,Co,Cu,Zn)O from Temperature‐Resolved Synchrotron Diffraction: Tetragonal Distortion and Guggenite Phase Open
The temperature‐resolved structure evolution of quinary and quaternary equimolar oxides containing Mg, Ni, Zn, Co, and Cu is investigated by in situ synchrotron diffraction. Important structural modifications occur already at mild temperat…
View article: Merging Heterogeneous Graphitic Carbon Nitride Photocatalysis with Cobaloxime Catalysis in Uphill Dehydrogenative Synthesis of Anilines
Merging Heterogeneous Graphitic Carbon Nitride Photocatalysis with Cobaloxime Catalysis in Uphill Dehydrogenative Synthesis of Anilines Open
Synthesis of substituted anilines upon nucleophilic addition of secondary amines to cyclohexanone derivatives followed by aromatization of the enamine by employing a combination of Ir-polypyridine complex as a photoredox catalyst and cobal…
View article: Minimizing the cobalt content in black ceramic pigments by Design of Experiments
Minimizing the cobalt content in black ceramic pigments by Design of Experiments Open
View article: In Situ X-ray Absorption Spectroscopy Study of the Deactivation Mechanism of a Ni-SrTiO<sub>3</sub> Photocatalyst Slurry Active in Water Splitting
In Situ X-ray Absorption Spectroscopy Study of the Deactivation Mechanism of a Ni-SrTiO<sub>3</sub> Photocatalyst Slurry Active in Water Splitting Open
We used in situ X-ray absorption spectroscopy (XAS) to investigate the composition-performance correlation of Ni-SrTiO3 photocatalysts active for water splitting. After preparation and exposure to ambient conditions, the Ni particles on Sr…
View article: In-situ surface activation of polycrystalline LaNiO3 electrocatalyst for the oxygen evolution reaction
In-situ surface activation of polycrystalline LaNiO3 electrocatalyst for the oxygen evolution reaction Open
View article: Dewetting of Pt Nanoparticles Boosts Electrocatalytic Hydrogen Evolution Due to Electronic Metal‐Support Interaction
Dewetting of Pt Nanoparticles Boosts Electrocatalytic Hydrogen Evolution Due to Electronic Metal‐Support Interaction Open
Solid‐state dewetting is the heat‐induced agglomeration of thin metal films into defined nanoparticles (NPs). Dewetted Pt nanoparticles are investigated on F‐doped SnO 2 (FTO) substrates as model binder‐free electrodes for the hydrogen evo…
View article: Structure and Activity of Carbonyl Cluster-Derived PtFe Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction in Alkaline Media
Structure and Activity of Carbonyl Cluster-Derived PtFe Nanoparticles as Electrocatalysts for the Oxygen Reduction Reaction in Alkaline Media Open
Rationally designing low-content Pt-based cathodic electrodes to effectively avoid the shortcomings of sluggish kinetics reactions in oxygen reduction reactions is still a hot topic. Herein, PtFe carbonyl cluster-derived nanoparticles were…
View article: Accurate prediction of the optical properties of nanoalloys with both plasmonic and magnetic elements
Accurate prediction of the optical properties of nanoalloys with both plasmonic and magnetic elements Open
The alloying process plays a pivotal role in the development of advanced multifunctional plasmonic materials within the realm of modern nanotechnology. However, accurate in silico predictions are only available for metal clusters of just a…
View article: Investigating the platinum electrode surface during Kolbe electrolysis of acetic acid
Investigating the platinum electrode surface during Kolbe electrolysis of acetic acid Open
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View article: Metastable Ni(I)-TiO<sub>2–<i>x</i></sub> Photocatalysts: Self-Amplifying H<sub>2</sub> Evolution from Plain Water without Noble Metal Co-Catalyst and Sacrificial Agent
Metastable Ni(I)-TiO<sub>2–<i>x</i></sub> Photocatalysts: Self-Amplifying H<sub>2</sub> Evolution from Plain Water without Noble Metal Co-Catalyst and Sacrificial Agent Open
Decoration of semiconductor photocatalysts with cocatalysts is generally done by a step-by-step assembly process. Here, we describe the self-assembling and self-activating nature of a photocatalytic system that forms under illumination of …
View article: Single‐Atoms on Crystalline Carbon Nitrides for Selective C─H Photooxidation: A Bridge to Achieve Homogeneous Pathways in Heterogeneous Materials
Single‐Atoms on Crystalline Carbon Nitrides for Selective C─H Photooxidation: A Bridge to Achieve Homogeneous Pathways in Heterogeneous Materials Open
Single‐atom catalysis is a field of paramount importance in contemporary science due to its exceptional ability to combine the domains of homogeneous and heterogeneous catalysis. Iron and manganese metalloenzymes are known to be effective …
View article: Full Spectroscopic Characterization of the Molecular Oxygen-Based Methane to Methanol Conversion over Open Fe(II) Sites in a Metal–Organic Framework
Full Spectroscopic Characterization of the Molecular Oxygen-Based Methane to Methanol Conversion over Open Fe(II) Sites in a Metal–Organic Framework Open
Iron-based enzymes efficiently activate molecular oxygen to perform the oxidation of methane to methanol (MTM), a reaction central to the contemporary chemical industry. Conversely, a very limited number of artificial catalysts have been d…
View article: A Laser Synthesis Route to Boron‐Doped Gold Nanoparticles Designed for X‐Ray Radiotherapy and Boron Neutron Capture Therapy Assisted by CT Imaging
A Laser Synthesis Route to Boron‐Doped Gold Nanoparticles Designed for X‐Ray Radiotherapy and Boron Neutron Capture Therapy Assisted by CT Imaging Open
New multifunctional theranostic vectors allow the expansion of cancer therapeutic approaches toward scarcely investigated fields. One example is the combination of boron neutron capture therapy (BNCT) and X‐ray radiotherapy (XRT) for treat…
View article: Determining the proton diffusion coefficient in highly hydrated iridium oxide films by energy dispersive X-ray absorption spectroscopy
Determining the proton diffusion coefficient in highly hydrated iridium oxide films by energy dispersive X-ray absorption spectroscopy Open
View article: Investigating the Platinum Electrode Surface During Kolbe Electrolysis of Acetic Acid
Investigating the Platinum Electrode Surface During Kolbe Electrolysis of Acetic Acid Open
View article: Direct Evidence of Thin Amorphous Layer Formation on Polycrystalline Lanio3 Electrocatalyst for Oxygen Evolution Reaction
Direct Evidence of Thin Amorphous Layer Formation on Polycrystalline Lanio3 Electrocatalyst for Oxygen Evolution Reaction Open
View article: Electrochemical performance of high and medium entropy oxides for lithium batteries
Electrochemical performance of high and medium entropy oxides for lithium batteries Open
Various high and medium entropy oxides with rock salt structures were prepared and studied as anodes for lithium batteries. All the systems had complex reaction mechanisms involving conversion reactions. Their capacity and reduction potent…
View article: Is configurational entropy the main stabilizing term in rock-salt Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O high entropy oxide?
Is configurational entropy the main stabilizing term in rock-salt Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O high entropy oxide? Open
View article: Capabilities of Grazing Incidence X-ray Diffraction in the Investigation of Amorphous Mixed Oxides with Variable Composition
Capabilities of Grazing Incidence X-ray Diffraction in the Investigation of Amorphous Mixed Oxides with Variable Composition Open
X-ray Diffraction has been fully exploited as a probe to investigate crystalline materials. However, very little research has been carried out to unveil its potentialities towards amorphous materials. In this work, we demonstrated the capa…
View article: Lithium intercalation mechanisms and critical role of multi-doping in LiFexMn2-x-yTiyO4 as high-capacity cathode material for Lithium-ion batteries
Lithium intercalation mechanisms and critical role of multi-doping in LiFexMn2-x-yTiyO4 as high-capacity cathode material for Lithium-ion batteries Open
The ever-growing demand for Li-ion batteries requires high-capacity electrode materials that should also be environmentally benign, Co-free, secure and durable, to achieve an optimal compromise between sustainability and functional perform…
View article: Lithium intercalation mechanisms and critical role of multi-doping in LiFe <sub> <i>x</i> </sub> Mn <sub> 2− <i>x</i> − <i>y</i> </sub> Ti <sub> <i>y</i> </sub> O <sub>4</sub> as high-capacity cathode material for lithium-ion batteries
Lithium intercalation mechanisms and critical role of multi-doping in LiFe <sub> <i>x</i> </sub> Mn <sub> 2− <i>x</i> − <i>y</i> </sub> Ti <sub> <i>y</i> </sub> O <sub>4</sub> as high-capacity cathode material for lithium-ion batteries Open
Novel dual-doping strategy for LMO based on partial substitution of Mn with Fe and Ti to design new CAMs for high-capacity cathodes. The cation disordering substitution of Mn allows cycling in a wide V range, higher capacity and improved s…
View article: The Missing Piece: The Structure of the Ti <sub>3</sub> C <sub>2</sub> T <sub> <i>x</i> </sub> MXene and Its Behavior as Negative Electrode in Sodium Ion Batteries
The Missing Piece: The Structure of the Ti <sub>3</sub> C <sub>2</sub> T <sub> <i>x</i> </sub> MXene and Its Behavior as Negative Electrode in Sodium Ion Batteries Open
The most common MXene composition Ti3C2Tx (T = F, O) shows outstanding stability as anode for sodium ion batteries (100% of capacity retention after 530 cycles with charge efficiency >99.7%). However…