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Finding the Most Catalytically Active Platinum Clusters With Low Atomicity
Author(s) -
Imaoka Takane,
Kitazawa Hirokazu,
Chun WangJae,
Yamamoto Kimihisa
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201504473
Subject(s) - atomicity , catalysis , platinum , cluster (spacecraft) , atom (system on chip) , chemistry , atomic units , nanocrystal , chemical physics , nanotechnology , materials science , computer science , physics , parallel computing , organic chemistry , database , quantum mechanics , programming language , database transaction
On a subnanometer scale, an only one‐atom difference in a metal cluster may cause significant transitions in the catalytic activity due to the electronic and geometric configurations. We now report the atomicity‐specific catalytic activity of platinum clusters with significantly small atomicity, especially below 20. The atomic coordination structure is completely different from that of the larger face‐centered cubic ( fcc ) nanocrystals. Here, an electrochemical study on such small clusters, in which the atomicity ranged between 12 and 20, revealed Pt 19 as the most catalytically active species. In combination with a theoretical study, a common structure that leads to a high catalytic performance is proposed.