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Au-based bimetallic catalysts: how the synergy between two metals affects their catalytic activity

Abstract : Supported bimetallic nanoparticles are particularly attractive catalysts due to increased activity and stability compared to their monometallic counterparts. In this work, gold-based catalysts have been studied as catalysts for the selective base-free oxidation of glucose. TiO2-supported Au–Pd and Au–Cu series prepared by the sol-immobilization and precipitation-reduction methods, respectively, showed a significant synergistic effect, particularly when the theoretical weight ratio of the two metals was close to 1 : 1 (with an actual experimental bulk Au/Pd molar ratio of ca. 0.8 and ca. 0.4 for Au/Cu) in both cases. XPS analysis showed that the presence of Auδ+, Pd2+ and CuOH species played an important role in the base-free glucose oxidation.
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https://hal.univ-lille.fr/hal-03025734
Contributeur : Lilloa Université de Lille <>
Soumis le : jeudi 26 novembre 2020 - 13:47:30
Dernière modification le : mardi 15 décembre 2020 - 10:44:02

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Jin Sha, Sébastien Paul, Franck Dumeignil, Robert Wojcieszak. Au-based bimetallic catalysts: how the synergy between two metals affects their catalytic activity. RSC Advances, Royal Society of Chemistry, 2019, RSC Advances, 9 (51), pp.29888-29901. ⟨10.1039/c9ra06001d⟩. ⟨hal-03025734⟩

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