Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
180572 | Electrochemistry Communications | 2010 | 4 Pages |
Abstract
Real structure of cubic Pt nanoparticle has been studied at various potentials in 0.1 M NaClO4 with the use of atomic force microscopy (AFM). Cubic Pt nanoparticles in 10 nm height are clearly imaged from 0.10 V to 1.10 V (Ag/AgCl). The height of the nanoparticle increases 1.2 ± 0.7 nm (10.4 ± 6.8%) around the onset potential of oxygen evolution (1.20 V (Ag/AgCl)). The height increase is attributed to the formation of the oxide species at the inner layers of the nanoparticle. Dissolution of the nanoparticle starts from the upper terrace, not from the edge above 1.40 V (Ag/AgCl).
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Hiroaki Kikuchi, Wataru Ouchida, Masashi Nakamura, Chie Goto, Mami Yamada, Nagahiro Hoshi,