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Alkali Containing Layered Metal Oxides as Catalysts for the Oxygen Evolution Reaction (2024)
Journal Article
Falsaperna, M., Arrigo, R., Marken, F., & Freakley, S. J. (in press). Alkali Containing Layered Metal Oxides as Catalysts for the Oxygen Evolution Reaction. ChemElectroChem, e202300761. https://doi.org/10.1002/celc.202300761

Improving the efficiency of the oxygen evolution reaction (OER) is essential to realise energy systems based on water electrolysis. Many catalysts have been developed for the OER to date, with iridium‐based oxides being the most promising due to thei... Read More about Alkali Containing Layered Metal Oxides as Catalysts for the Oxygen Evolution Reaction.

Advanced (photo)electrocatalytic approaches to substitute the use of fossil fuels in chemical production (2023)
Journal Article
Centi, G., Perathoner, S., Genovese, C., & Arrigo, R. (in press). Advanced (photo)electrocatalytic approaches to substitute the use of fossil fuels in chemical production. Chemical Communications, 59(21), 3005-3023. https://doi.org/10.1039/d2cc05132j

Electrification of the chemical industry for carbon-neutral production requires innovative (photo)electrocatalysis. This study highlights the contribution and discusses recent research projects in this area, which are relevant case examples to explor... Read More about Advanced (photo)electrocatalytic approaches to substitute the use of fossil fuels in chemical production.

Assessment of the Degradation Mechanisms of Cu Electrodes during the CO (2023)
Journal Article
Mom, R. V., Sandoval-Diaz, L., Gao, D., Chuang, C., Carbonio, E. A., Jones, T. E., …Velasco-Vélez, J. (in press). Assessment of the Degradation Mechanisms of Cu Electrodes during the CO. ACS applied materials & interfaces, 15(25), https://doi.org/10.1021/acsami.2c23007

Catalyst degradation and product selectivity changes are two of the key challenges in the electrochemical reduction of CO on copper electrodes. Yet, these aspects are often overlooked. Here, we combine X-ray spectroscopy, electron microscopy, an... Read More about Assessment of the Degradation Mechanisms of Cu Electrodes during the CO.

Interfacial chemistry in the electrocatalytic hydrogenation of CO2 over C-Supported Cu-Based systems (2023)
Journal Article
Gianolio, D., Higham, M., Quesne, M., Aramini, M., Xu, R., Large, A., …Arrigo, R. (2023). Interfacial chemistry in the electrocatalytic hydrogenation of CO2 over C-Supported Cu-Based systems. ACS catalysis, 13,

Operando soft and hard X-ray spectroscopic techniques were used in combination with plane-wave density functional theory (DFT) simulations to rationalize the enhanced activities of Zn-containing Cu nanostructured electrocatalysts in the electrocataly... Read More about Interfacial chemistry in the electrocatalytic hydrogenation of CO2 over C-Supported Cu-Based systems.

Orange peel biomass‐derived carbon supported Cu electrocatalysts active in the CO2 ‐ reduction to formic acid (2023)
Journal Article
Miah, T., Demoro, P., Nduka, I., De Luca, F., Abate, S., & Arrigo, R. (2023). Orange peel biomass‐derived carbon supported Cu electrocatalysts active in the CO2 ‐ reduction to formic acid. ChemPhysChem, https://doi.org/10.1002/cphc.202200589

We report a green, wet chemistry approach towards the production of C‐supported Cu electrocatalysts active in the CO2 reduction to formic acid. We use citrus peels as a C support precursor and as a source of reducing agents for the Cu cations. We sho... Read More about Orange peel biomass‐derived carbon supported Cu electrocatalysts active in the CO2 ‐ reduction to formic acid.

Enhanced stability of sub-nanometric iridium decorated graphitic carbon nitride for H 2 production upon hydrous hydrazine decomposition (2022)
Journal Article
Bellomi, S., Barlocco, I., Chen, X., Delgado, J., Arrigo, R., Dimitratos, N., …Villa, A. (2022). Enhanced stability of sub-nanometric iridium decorated graphitic carbon nitride for H 2 production upon hydrous hydrazine decomposition. Physical Chemistry Chemical Physics, 2, 1081-1095. https://doi.org/10.1039/d2cp04387d

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 rise of electrochemical NAPXPS operated in the soft X-ray regime exemplified by the oxygen evolution reaction on IrO (2022)
Journal Article
Velasco Vélez, J., Bernsmeier, D., Jones, T., Zeller, P., Carbonio, E., Chuang, C., …Schlögl, R. (2022). The rise of electrochemical NAPXPS operated in the soft X-ray regime exemplified by the oxygen evolution reaction on IrO. Faraday Discussions, https://doi.org/10.1039/d1fd00114k

Photoelectron spectroscopy offers detailed information about the electronic structure and chemical composition of surfaces, owing to the short distance that the photoelectrons can escape from a dense medium. Unfortunately, photoelectron based spectro... Read More about The rise of electrochemical NAPXPS operated in the soft X-ray regime exemplified by the oxygen evolution reaction on IrO.

On the stability of isolated iridium sites in N-rich frameworks against agglomeration under reducing conditions (2022)
Journal Article
Iemhoff, A., Vennewald, M., Artz, J., Mebrahtu, C., Meledin, A., Weirich, T. E., …Palkovits, R. (2022). On the stability of isolated iridium sites in N-rich frameworks against agglomeration under reducing conditions. ChemCatChem, 14(9), https://doi.org/10.1002/cctc.202200179

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.