Issue 1, 2015

Oxygen evolution on well-characterized mass-selected Ru and RuO2 nanoparticles

Abstract

Oxygen evolution was investigated on model, mass-selected RuO2 nanoparticles in acid, prepared by magnetron sputtering. Our investigations include electrochemical measurements, electron microscopy, scanning tunneling microscopy and X-ray photoelectron spectroscopy. We show that the stability and activity of nanoparticulate RuO2 is highly sensitive to its surface pretreatment. At 0.25 V overpotential, the catalysts show a mass activity of up to 0.6 A mg−1 and a turnover frequency of 0.65 s−1, one order of magnitude higher than the current state-of-the-art.

Graphical abstract: Oxygen evolution on well-characterized mass-selected Ru and RuO2 nanoparticles

Supplementary files

Article information

Article type
Edge Article
Submitted
02 Sep 2014
Accepted
15 Sep 2014
First published
26 Sep 2014
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2015,6, 190-196

Oxygen evolution on well-characterized mass-selected Ru and RuO2 nanoparticles

E. A. Paoli, F. Masini, R. Frydendal, D. Deiana, C. Schlaup, M. Malizia, T. W. Hansen, S. Horch, I. E. L. Stephens and I. Chorkendorff, Chem. Sci., 2015, 6, 190 DOI: 10.1039/C4SC02685C

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