Titania-Supported PdAu Bimetallic Catalysts Prepared from Dendrimer-Encapsulated Nanoparticle Precursors

• Published in: Journal of the American Chemical Society Vol. 127; no. 5; pp. 1380 - 1381
• Main Authors: Scott, Robert W. J, Sivadinarayana, Chinta, Wilson, Orla M, Yan, Zhen, Goodman, D. Wayne, Crooks, Richard M
• Format: Journal Article
• Language: English
• Published: WASHINGTON American Chemical Society 09.02.2005; Amer Chemical Soc
• Subjects: Catalysis; Catalysts: preparations and properties; Chemistry; Chemistry, Multidisciplinary; Exact sciences and technology; General and physical chemistry; Physical Sciences; Science & Technology; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; AU; CLUSTERS; HYDROGENATION; Particle size; Catalytic reaction; Transition metal; Experimental study; Metal particle; Supported catalyst; Submicron particle; Transmission electron microscopy; Oxidative degradation; Carbon monoxide; Titanium oxide; Platinoid; Catalyst activity; Binary alloy
• ISSN: 0002-7863; 1520-5126
• DOI: 10.1021/ja044446h

We report the synthesis, characterization, and catalytic activity of titania-supported bimetallic PdAu particles prepared using dendrimer-encapsulated nanoparticle (DEN) precursors. Single-particle energy-dispersive spectroscopy indicates a homogeneous distribution of bimetallic nanoparticles having compositions closely related to the metal-ion ratios used to prepare the DEN precursors. The catalytic activity of the supported PdAu catalysts was compared to that of supported Pd-only and Au-only catalysts; the enhanced CO oxidation activity of the PdAu catalysts is indicative of a synergetic bimetallic interaction.