Pt−Co Alloy Nanoparticles on a γ‐Al₂O₃ Support: The Synergistic Effect between Isolated Electron‐Rich Pt and Co for Automotive Exhaust Purification

Abstract

Invited for this month's cover is the group of Dr. Katsutoshi Sato and Prof. Dr. Katsutoshi Nagaoka (Kyoto University) and collaborators at Oita and Kyushu Universities. The cover picture shows the proposed mechanism for automotive exhaust purification over a Pt–Co alloy nanoparticle catalyst with an extremely low Pt/Co molar ratio. In the catalyst, the isolated electron‐rich Pt atoms are present on the surface of the nanoparticles and play an important role in NOx capture and activation, which are important elementary steps in exhaust purification. Read the full text of the article at 10.1002/cplu.201800542.

Nanoscale architecture of ceria-based model catalysts: Pt–Co nanostructures on well-ordered CeO2(111) thin films

“…It was suggested that the improvements in ORR activity are associated with strain effects, i.e. the changes in Pt-Pt bond distances, and the electronic effects arising from bimetallic interactions between the Pt and the Co metals [9][10][11][12][13][14]. The corresponding effects have been investigated as a function of Pt-Co alloy stoichiometry, the structure, and the composition of core-shell nanostructures supported on carbon [15][16][17][18][19].…”