Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Communications
In-situ EC-AFM Observations upon Decay of Nano-Islands on Au(100) Electrodes in 1-Butyl-3-Methyl-Imidazolium Room Temperature Molten Salts; BMImBF4 and BMImTFSI
Nobumitsu HIRAITomohiko YOKOGAWAToshihiro TANAKA
Author information
JOURNALS OPEN ACCESS

2009 Volume 77 Issue 8 Pages 680-682

Details
Abstract

Au(100) single crystal surfaces were investigated using in-situ electrochemical atomic force microscopy (EC-AFM) in 1-butyl-3-methyl-imidazolium tetrafluoroborate (BMImBF4) and 1-butyl-3-methyl-imidazolium bis (trifluoromethanesulfonyl) imide (BMImTFSI). The protrusions with four-fold symmetry and interatomic distances of 0.3 nm were observed in the potential range from −0.42 to +0.68 V (vs. Fc/Fc+ electrode) in BMImBF4 and from −0.35 to +1.06 V in BMImTFSI. These observations corresponded to a bare and unreconstructed Au(100)-(1×1) structure. The top layer of the multi-layered island on Au(100) collapsed at a constant decay rate in both BMImBF4 and BMImTFSI and is consistent with previously reported for EMImBF4, EMImTFSI, and a sulfuric acid aqueous solution.

Information related to the author
© 2009 The Electrochemical Society of Japan
Previous article Next article
feedback
Top