Jump to main content
Jump to site search

Issue 6, 2017
Previous Article Next Article

A combined UHV-STM-flow cell set-up for electrochemical/electrocatalytic studies of structurally well-defined UHV prepared model electrodes

Author affiliations

Abstract

We describe the construction and discuss the performance of a novel combined ultrahigh vacuum (UHV)-electrochemistry set-up, allowing the controlled preparation and structural characterization of complex nanostructured electrode surfaces by high resolution scanning tunnelling microscopy (STM) under UHV conditions on the one hand and, after electrode transfer under clean conditions, electrochemical measurements under continuous, controlled electrolyte mass transport conditions on the other. Electrochemical measurements can be coupled with online product detection, either using an additional collector electrode or by differential electrochemical mass spectrometry (DEMS). The potential of the set-up will be illustrated in two electrocatalytic reactions on complex, but structurally well-defined bimetallic electrode surfaces, O2 reduction on PtxAg1−x/Pt(111) monolayer surface alloys and bulk CO oxidation on Pt monolayer island modified Ru(0001) electrodes. We will particularly demonstrate the importance of structural characterization after the electrochemical measurements for identifying structural modifications induced by the electrochemical environment and thus avoiding misleading conclusions about the structure–activity relationships.

Graphical abstract: A combined UHV-STM-flow cell set-up for electrochemical/electrocatalytic studies of structurally well-defined UHV prepared model electrodes

Back to tab navigation

Supplementary files

Article information


Submitted
01 Sep 2016
Accepted
21 Sep 2016
First published
21 Sep 2016

Phys. Chem. Chem. Phys., 2017,19, 4166-4178
Article type
Paper

A combined UHV-STM-flow cell set-up for electrochemical/electrocatalytic studies of structurally well-defined UHV prepared model electrodes

J. Schnaidt, S. Beckord, A. K. Engstfeld, J. Klein, S. Brimaud and R. J. Behm, Phys. Chem. Chem. Phys., 2017, 19, 4166
DOI: 10.1039/C6CP06051J

Social activity

Search articles by author

Spotlight

Advertisements