A bimetallic catalyst contains two metals in the same active entity, and its interest lies in the fact that its activity or selectivity is not the sum of what the two metals give separately. The effect was recognised early in reforming catalysts, where adding a second metal to platinum changed the dehydrogenation behaviour and the resistance to deactivation together [1]. Pairing gold with palladium in a supported particle changes the oxidation of benzyl alcohol beyond what either metal achieves alone, and the effect is traced to a change in the electronic structure of the diluting metal [2]. Spreading a second metal over an oxide support that itself takes part in the reaction extends the same idea to oxide-metal pairs [3]. At the extreme of dilution the minor metal becomes isolated on a host, and a platinum-cobalt pair on ceria with one-to-one stoichiometry gives a well-defined geometry for studying the interaction [4]. Oxide pairs behave similarly outside the noble metals: a vanadium-cerium combination oxidises with a solvent-dependent outcome [5].
- synergistic effect
- alloy nanoparticle
- single-atom alloy
- ligand effect
- ensemble effect
- selectivity
- supported metal
Advanced Nanomaterials in Catalysis·Materials Chemistry·Materials Science·Physical Sciences
References
- SIVASANKER, S.; Effect of sulfidation on the dehydrogenation activity of a bimetallic reforming catalyst. Journal of Catalysis 1975, 37, 553-554, 10.1016/0021-9517(75)90192-x.
- Zhang, Z.; Wang, Y.; Li, X.; Dai, W.L.; Synergistic effect on Au-Pd bimetallic catalyst during oxidation of benzyl alcohol to sodium benzoate. Chinese Journal of Catalysis 2014, 35, 1846-1853, 10.1016/s1872-2067(14)60159-5.
- Tian, T.; Liu, Y.; Zhang, X.; Bimetallic synergistic Au/CuO-hydroxyapatite catalyst for aerobic oxidation of alcohols. Chinese Journal of Catalysis 2015, 36, 1358-1364, 10.1016/s1872-2067(15)60854-3.
- Ma, S.; Feng, C.; Dong, F.; Wu, S.; Han, W.; Han, W.; Tang, Z.; A Pt1Co1/CeO2 bimetallic single-atom catalyst with a strong Pt-Co synergistic effect for efficient oxidation of benzene. Applied Catalysis B: Environment and Energy 2025, 374, 125369, 10.1016/j.apcatb.2025.125369.
- Guo, X.; Wang, W.; Wang, H.; Zhu, J.; Liu, Y.; He, Z.H.; Yang, Y.; Wang, K.; Liu, Z.T.; Synergistic vanadium-cerium bimetallic oxide catalyst and solvent effect for efficient oxidation of ethylbenzene to acetophenone. Applied Catalysis A: General 2026, 713, 120820, 10.1016/j.apcata.2026.120820.