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Elucidating the formation and structural evolution of platinum single-site catalysts for the hydrogen evolution reaction (2022)
Journal Article
Tang, P., Lee, H., Hurlbutt, K., Huang, P., Narayanan, S., Wang, C., …Pasta, M. (2022). Elucidating the formation and structural evolution of platinum single-site catalysts for the hydrogen evolution reaction. ACS catalysis, 12(5), 3173-3180. https://doi.org/10.1021/acscatal.1c05958

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.

Dynamics at polarized, carbon dioxide-iron oxyhydroxide interfaces unveil the origin of multicarbon product formation (2021)
Journal Article
Arrigo, R., Blume, R., Streibel, V., Genovese, C., Roldan, A., Schuster, M., …Centi, G. (2022). Dynamics at polarized, carbon dioxide-iron oxyhydroxide interfaces unveil the origin of multicarbon product formation. ACS catalysis, 12(1), 411-430. https://doi.org/10.1021/acscatal.1c04296

Surface-sensitive ambient pressure X-ray photoelectron spectroscopy and near edge X-ray absorption fine structure spectroscopy combined with an electrocatalytic reactivity study, multilength scale electron microscopy and theo-retical modelling provid... Read More about Dynamics at polarized, carbon dioxide-iron oxyhydroxide interfaces unveil the origin of multicarbon product formation.

Surface electron-hole rich species active in the electrocatalytic water oxidation (2021)
Journal Article
Velasco-Vélez, J., Carbonio, E., Chuang, C., Hsu, C., Lee, J., Arrigo, R., …Jones, T. (2021). Surface electron-hole rich species active in the electrocatalytic water oxidation. Abstracts of papers / American Chemical Society, 143(32), 12524-12534. https://doi.org/10.1021/jacs.1c01655

Iridium and ruthenium and their oxides/hydroxides are the best candidates for the oxygen evolution reaction under harsh acidic conditions owing to the low overpotentials observed for Ru- and Ir-based anodes and the high corrosion resistance of Ir-oxi... Read More about Surface electron-hole rich species active in the electrocatalytic water oxidation.

Monitoring dynamics of defects and single Fe atoms in N-functionalized few-layer graphene by in situ temperature programmed scanning transmission electron microscopy (2021)
Journal Article
Arrigo, R., Sasaki, T., Callison, J., Gianolio, D., & Schuster, M. (2022). Monitoring dynamics of defects and single Fe atoms in N-functionalized few-layer graphene by in situ temperature programmed scanning transmission electron microscopy. Journal of Energy Chemistry, 64, 520-530. https://doi.org/10.1016/j.jechem.2021.05.005

In this study, we aim to contribute an understanding of the pathway of formation of Fe species during top-down synthesis of dispersed Fe on N-functionalized few layer graphene. We use X-ray absorption spectroscopy to determine the electronic structur... Read More about Monitoring dynamics of defects and single Fe atoms in N-functionalized few-layer graphene by in situ temperature programmed scanning transmission electron microscopy.

Structural insight into [Fe–S2–Mo] motif in electrochemical reduction of N2 over Fe1-supported molecular MoS2 (2020)
Journal Article
Zheng, J., Wu, S., Lu, L., Huang, C., Ho, P., Kirkland, A., …Edman Tsang, S. (2021). Structural insight into [Fe–S2–Mo] motif in electrochemical reduction of N2 over Fe1-supported molecular MoS2. Chemical Science, 12(2), 688-695. https://doi.org/10.1039/d0sc04575f

The catalytic synthesis of NH3 from the thermodynamically challenging N2 reduction reaction under mild conditions is currently a significant problem for scientists. Accordingly, herein, we report the development of a nitrogenase-inspired inorganic-ba... Read More about Structural insight into [Fe–S2–Mo] motif in electrochemical reduction of N2 over Fe1-supported molecular MoS2.

Investigations of carbon nitride-supported Mn3 O4 oxide nanoparticles for ORR (2020)
Journal Article
Large, A., Wahl, S., Abate, S., da Silva, I., Delgado Jaen, J., Pinna, N., …Arrigo, R. (2020). Investigations of carbon nitride-supported Mn3 O4 oxide nanoparticles for ORR. Catalysts, 10(11), e1289. https://doi.org/10.3390/catal10111289

Earth-abundant Mn-based oxide nanoparticles are supported on carbon nitride using two different immobilization methods and tested for the oxygen reduction reaction. Compared to the metal free CN, the immobilization of Mn oxide enhances not only the e... Read More about Investigations of carbon nitride-supported Mn3 O4 oxide nanoparticles for ORR.

On the activity/selectivity and phase stability of thermally grown copper oxides during the electrocatalytic reduction of CO2 (2020)
Journal Article
Velasco-Vélez, J., Chuang, C., Gao, D., Zhu, Q., Ivanov, D., Jeon, H., …Schlögl, R. (2020). On the activity/selectivity and phase stability of thermally grown copper oxides during the electrocatalytic reduction of CO2. ACS catalysis, 10(19), 11510-11518. https://doi.org/10.1021/acscatal.0c03484

Revealing the active nature of oxide-derived copper is of key importance to understand its remarkable catalytic performance during the cathodic CO2 reduction reaction (CO2RR) to produce valuable hydrocarbons. Using advanced spectroscopy, electron mic... Read More about On the activity/selectivity and phase stability of thermally grown copper oxides during the electrocatalytic reduction of CO2.

Ambient-pressure endstation of the Versatile Soft X-ray (VerSoX) beamline at Diamond Light Source (2020)
Journal Article
Held, G., Venturini, F., Grinter, D., Ferrer, P., Arrigo, R., Deacon, L., …Scott, S. (2020). Ambient-pressure endstation of the Versatile Soft X-ray (VerSoX) beamline at Diamond Light Source. Journal of Synchrotron Radiation, 27(5), 1153-1166. https://doi.org/10.1107/S1600577520009157

The ambient-pressure endstation and branchline of the Versatile Soft X-ray (VerSoX) beamline B07 at Diamond Light Source serves a very diverse user community studying heterogeneous catalysts, pharmaceuticals and biomaterials under realistic condition... Read More about Ambient-pressure endstation of the Versatile Soft X-ray (VerSoX) beamline at Diamond Light Source.

The electronic structure, surface properties, and in situ N2O decomposition of mechanochemically synthesised LaMnO3 (2020)
Journal Article
Blackmore, R., Rivas, M., Tierney, G., Mohammed, K., Decarolis, D., Hayama, S., …Wells, P. (2020). The electronic structure, surface properties, and in situ N2O decomposition of mechanochemically synthesised LaMnO3. Physical Chemistry Chemical Physics, 22(34), 18774-18787. https://doi.org/10.1039/d0cp00793e

The use of mechanochemistry to prepare catalytic materials is of significant interest; it offers an environmentally beneficial, solvent-free, route and produces highly complex structures of mixed amorphous and crystalline phases. This study reports o... Read More about The electronic structure, surface properties, and in situ N2O decomposition of mechanochemically synthesised LaMnO3.