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 Au ^δ+, Pd²⁺ and CuOH species played an important role in the base-free glucose ox

SUBMITTER: Sha J 

PROVIDER: S-EPMC9071902 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature