ChemInform Abstract: In situ Scanning Tunneling Microscopy (STM) for Platinum Surfaces in Aqueous Solutions

ChemInform Abstract

is performed before and after an electrochemical activation (potential cycles in 0.1 M H₂SO₄). The in situ measurements at Pt electrodes show that large changes in the surface structure are induced by the activation process. Regular parallel-terraced structures appear, suggesting that migration of Pt adatoms produced by the potential cycling occurs in a particular crystallographic direction. STM results obtained for Pt particles electrodeposited on a highly ordered pyrolytic graphite are also reported.