Enhanced Electrocatalytic Oxygen Evolution in Au–Fe Nanoalloys
Open accessAbstract
Oxygen evolution reaction (OER) is the most critical step in water splitting, still limiting the development of efficient alkaline water electrolyzers. Here we investigate the OER activity of Au–Fe nanoalloys obtained by laser‐ablation synthesis in solution. This method allows a high amount of iron (up to 11 at %) to be incorporated into the gold lattice, which is not possible in Au–Fe alloys synthesized by other routes, due to thermodynamic constraints. The Au 0.89 Fe 0.11 nanoalloys exhibit strongly enhanced OER in comparison to the individual pure metal nanoparticles, lowering the onset of OER and increasing up to 20 times the current density in alkaline aqueous solutions. Such a remarkable electrocatalytic activity is associated to nanoalloying, as demonstrated by comparative examples with physical mixtures of gold and iron nanoparticles. These results open attractive scenarios to the use of kinetically stable nanoalloys for catalysis and energy conversion.
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Au-Fe nanoalloys exhibited high OER activity with lower overpotential in alkaline aqueous solution, attributed to nanoalloying.
“Au–Fe nanoalloys exhibited high OER activity with lower overpotential in alkaline aqueous solution, which was attributed to the nanoalloying.”
From Fundamentals and comprehensive insights on pulsed laser synthesis of advanced materials for diverse photo- and electrocatalytic applications (2022) · cites this paper as [227]
Au-Fe nanoalloys prepared through PLAL incorporated around 11% Fe into the Au lattice, which is not possible in any other method.
“Vassalini et al.227 reported Au–Fe nanoalloys prepared through PLAL, and this method incorporated around 11% of Fe into the Au lattice, which is not possible in any other method.”
From Fundamentals and comprehensive insights on pulsed laser synthesis of advanced materials for diverse photo- and electrocatalytic applications (2022) · cites this paper as [227]
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References 42 · Cited by 81
- Authors
- Vassalini, I., Borgese, L., Mariz, M., Polizzi, S., Aquilanti, G., Ghigna, P., Sartorel, A., Amendola, V., & Alessandri, I.
- Affiliations
- National Interuniversity Consortium of Materials Science and Technology (IT)
- University of Padua (IT)
- Ca' Foscari University of Venice (IT)
- Elettra-Sincrotrone Trieste S.C.p.A. (IT)
- University of Pavia (IT)
- Corresponding author
- Amendola, Vincenzo
- Alessandri, Ivano
- ORCID
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2017-05-02
- Volume
- 56
- Issue
- 23
- Pages
- 6589-6593
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2611770382
- Cited by
- 81
- References
- 42
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 6 · 2023: 8 · 2022: 12 · 2021: 15 · 2020: 6 · 2019: 19 · 2018: 8 · 2017: 3
- FWCI
- 2.64
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Licence
- Locations
- Angewandte Chemie International Edition (publishedVersion)
- PubMed (publishedVersion)
- ARCA (Università Ca' Foscari Venezia) (submittedVersion, other-oa)
- Institutional Research Information System (Università degli Studi di Brescia) (submittedVersion)
- Padua Research Archive (University of Padova) (submittedVersion)
- Funders
- Università degli Studi di Padova (PRAT no. CPDA114097/11)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
- Physical Sciences › Engineering › Biomedical Engineering › Laser-Ablation Synthesis of Nanoparticles
- Physical Sciences › Materials Science › Materials Chemistry › Catalytic Processes in Materials Science
- Keywords
- oxygen evolution reaction, gold-iron alloys, laser ablation synthesis, electrocatalysis, alkaline water electrolysis, water splitting, turn-on voltage
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