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Torabi, Mostafa; Zaborowska-Mazurkiewicz, Michalina; Zdunek, Konstanty; Jabłonowska, Elżbieta; Więckowska, Agnieszka; Bilewicz, Renata, 2026, "Research data for: Electrode Surface Engineering Using the Langmuir–Schaefer Method: Benefits of Controlled Distribution of Catalytic Gold Clusters on Electrodes", https://doi.org/10.58132/FUDBW3, Dane Badawcze UW, V1
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The dataset comprises a complete set of experimental results obtained from the modification of electrode surfaces using the Langmuir–Schaefer (LS) method with atomically precise [Au₂₅(SC₄)₁₈]⁰ gold nanoclusters (AuNCs). The data document the controlled spreading of AuNCs at the air–water interface and their transfer onto highly oriented pyrolytic graphite (HOPG) substrates under systematically varied surface pressures. The dataset includes Langmuir isotherms used to determine surface densities of AuNCs as a function of surface pressure, along with morphological characterization obtained by atomic force microscopy (AFM) and field-emission scanning electron microscopy (FE-SEM), which reveal the spatial distribution, aggregation state, and layer morphology of the transferred nanoclusters. Electrochemical measurements associated with CO₂ reduction reaction (CO₂RR) activity are provided, together with quantitative determination of catalytically accessible gold atoms derived from oxidation-based methods and correlated with structural data. The dataset captures a previously unrecognized interfacial transition from a condensed two-dimensional monolayer to an irreversible three-dimensional aggregated phase when transfer is performed at surface pressures exceeding 30 mN/m. This transition directly controls the number of surface-exposed gold atoms and, consequently, the catalytic activity per nanocluster. The data demonstrate that only the surface-accessible fraction of AuNCs contributes to catalysis and that excessive loading leads to reduced per-cluster activity. Overall, the dataset establishes that optimal catalytic efficiency is achieved when AuNCs are well dispersed and aggregation or multilayer formation is minimized, highlighting the Langmuir–Schaefer method as an effective strategy for precise control of nanocatalyst organization on electrode surfaces.
Gold nanoparticle, Carbon dioxide electroreduction, Electrocatalysis, Self-assembled metal-nanoparticle film
Mostafa Torabi, Michalina Zaborowska-Mazurkiewicz, Konstanty Zdunek, Elzbieta Jablonowska, Agnieszka Wieckowska, Renata Bilewicz, Electrode Surface Engineering Using the Langmuir–Schaefer Method: Benefits of Controlled Distribution of Catalytic Gold Clusters on Electrodes, Langmuir :
CC0 Creative Commons Zero 1.0
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