1. Time and potential-resolved comparison of copper disc and copper nanoparticles for electrocatalytic hydrogenation of furfuralNik Maselj, Vasko Jovanovski, Francisco Ruiz-Zepeda, Matjaž Finšgar, Tamara Klemenčič, Jan Trputec, Ana Rebeka Kamšek, Marjan Bele, Nejc Hodnik, Primož Jovanovič, 2023, original scientific article Abstract: Herein, a comparative analysis of two case example catalysts for electrocatalytic hydrogenation (ECH) of furfural under acidic conditions, namely a copper polycrystalline disc and copper nanoparticles dispersed on carbon support, is performed. To gain a detailed insight on ECH trends, a task-specific methodology is employed based on electrochemistry–mass spectrometry coupling, which enabled time- and potential-resolved detection of volatile ECH products, i.e., 2-methylfurane (2-MF) and H2. In this way, the ability to elucidate potential-dependent product distribution for the two catalysts, namely faradaic efficiency, is achieved. Accordingly, the nanoparticulate analog is significantly more active toward competitive hydrogen evolution reaction and 2-MF production, whereas the polycrystalline sample is more selective toward furfuryl alcohol. The observed differences in ECH are ascribed to alterations in surface domains, which is supported by surface-sensitive lead underpotential deposition characterization.
Keywords: baker, nanodelci, elektrokataliza, copper, nanoparticles, electrocatalytic hydrogeneration
Published in DKUM: 19.04.2024; Views: 161; Downloads: 6
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