Au-based bimetallic catalysts: how the synergy between two metals affects their catalytic activity.
RSC Adv
; 9(51): 29888-29901, 2019 Sep 18.
Article
en En
| MEDLINE
| ID: mdl-35531527
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 oxidation.
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01-internacional
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MEDLINE
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En
Revista:
RSC Adv
Año:
2019
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Article