Dr Rosa Arrigo's Outputs (7)

Enhanced stability of sub-nanometric iridium decorated graphitic carbon nitride for H 2 production upon hydrous hydrazine decomposition (2022)
Journal Article

Stabilizing metal nanoparticles is vital for large scale implementations of supported metal catalysts, particularly for a sustainable transition to clean energy, e.g., H2 production. In this work, iridium sub-nanometric particles were deposited on co... Read More about Enhanced stability of sub-nanometric iridium decorated graphitic carbon nitride for H 2 production upon hydrous hydrazine decomposition.

In situ dynamics of carbon supported metal systems for carbon dioxide electroreduction (2022)
Presentation / Conference
Arrigo, R. (2022, November). In situ dynamics of carbon supported metal systems for carbon dioxide electroreduction. Presented at Proceedings of International Conference on Frontiers in Electrocatalytic Transformations (INTERECT22), València, Spain

Graphitic materials are largely explored as redox-active supports for metal species in acid/base catalysis, redox catalysis and electrocatalysis. [1] Edge terminations and in-plane point defects, such non 6-membered rings and vacancies on the basal p... Read More about In situ dynamics of carbon supported metal systems for carbon dioxide electroreduction.

The versatile soft X-ray (VerSoX) beamline at diamond light source (2022)
Journal Article

The rise of electrochemical NAPXPS operated in the soft X-ray regime exemplified by the oxygen evolution reaction on IrO (2022)
Journal Article

Different operando approaches based in PES were used and compared under OER conditions on IrOx. ResPES indicates that single coordinated oxygen atoms (μ1-O) are the active species yielding the formation of peroxo (μ1-OO) and finally O2 as product.

On the stability of isolated iridium sites in N-rich frameworks against agglomeration under reducing conditions (2022)
Journal Article

Stabilization of single metal atoms is a persistent challenge in heterogeneous catalysis. Especially supported late transitions metals are prone to undergo agglomeration to nanoparticles under reducing conditions. In this study, nitrogen-rich covalen... Read More about On the stability of isolated iridium sites in N-rich frameworks against agglomeration under reducing conditions.

Elucidating the formation and structural evolution of platinum single-site catalysts for the hydrogen evolution reaction (2022)
Journal Article

Platinum single-site catalysts (SSCs) are a promising technology for
the production of hydrogen from clean energy sources. They have high activity and
maximal platinum-atom utilization. However, the bonding environment of
platinum during operation... Read More about Elucidating the formation and structural evolution of platinum single-site catalysts for the hydrogen evolution reaction.

Dynamics over a Cu–graphite electrode during the gas-phase CO2 reduction investigated by APXPS (2022)
Journal Article
Arrigo, R., Blume, R., Large, A. I., Velasco-Vélez, J. J., Hävecker, M., Knop-Gericke, A., & Held, G. (2022). Dynamics over a Cu–graphite electrode during the gas-phase CO2 reduction investigated by APXPS. Faraday Discussions, 236, 126-140. https://doi.org/10.1039/d1fd00121c

We use ambient pressure X-ray photoelectron and absorption spectroscopies coupled with on-line gas detection to investigate in situ performance and interface chemistry of an electrodeposited Cu on a carbon support under conditions of CO2 reduction.