Scanning electrochemical microscopy: Visualization of local electrocatalytic activity of transition metals hexacyanoferrates
- Authors: Komkova M.A.1, Maljusch A.2, Sliozberg K.2, Schuhmann W.2, Karyakin A.A.1
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Affiliations:
- Materials Science and Chemistry Faculties of Lomonosov Moscow State University
- Ruhr-Universität Bochum, Analytical Chemistry–Center for Electrochemical Sciences (CES)
- Issue: Vol 52, No 12 (2016)
- Pages: 1159-1165
- Section: Article
- URL: https://journals.rcsi.science/1023-1935/article/view/188309
- DOI: https://doi.org/10.1134/S1023193516120065
- ID: 188309
Cite item
Abstract
The redox competition mode of scanning electrochemical microscopy (SECM) was used to visualize differences in local electrocatalytic activity of Fe and Ni hexacyanoferrates (HCFs) in hydrogen peroxide reduction. The uniform round-shaped spots of electrocatalysts for the SECM measurements were electrochemically deposited using a scanning droplet cell. A negligible activity of NiHCF towards H2O2 reduction compared to Prussian Blue (PB) was observed. The dependence of local Prussian Blue activity on the applied potential was investigated. The proposed strategy explores the potential application of SECM as a rapid screening tool for HCF film activity within a single experiment.
About the authors
M. A. Komkova
Materials Science and Chemistry Faculties of Lomonosov Moscow State University
Author for correspondence.
Email: mkomkova@gmail.com
Russian Federation, Moscow, 119991
A. Maljusch
Ruhr-Universität Bochum, Analytical Chemistry–Center for Electrochemical Sciences (CES)
Email: mkomkova@gmail.com
Germany, Universitätsstr. 150, Bochum, D-44780
K. Sliozberg
Ruhr-Universität Bochum, Analytical Chemistry–Center for Electrochemical Sciences (CES)
Email: mkomkova@gmail.com
Germany, Universitätsstr. 150, Bochum, D-44780
W. Schuhmann
Ruhr-Universität Bochum, Analytical Chemistry–Center for Electrochemical Sciences (CES)
Email: mkomkova@gmail.com
Germany, Universitätsstr. 150, Bochum, D-44780
A. A. Karyakin
Materials Science and Chemistry Faculties of Lomonosov Moscow State University
Email: mkomkova@gmail.com
Russian Federation, Moscow, 119991