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Carbon monoxide oxidation assisted by interfacial oxygen-water layers

  • Carlos F. ZinolaEmail author
Original Paper
  • 35 Downloads

Abstract

Based on the fact that oxygenated species promotes the oxidative desorption of carbon monoxide adsorbates, a simple methodology is described here to prepare platinum electrodes with oxygen/water ensembles. Platinum fast quenching (thermal shocking) in oxygenated water after flame annealing in an oxygen atmosphere offers features not seen before. We propose the formation of interfacial oxygen/water ensembles as partially soluble species between platinum rows at stepped n x (110) surfaces. Depending on the temperature of quenching and time of cooling, it is possible to almost completely oxidize carbon monoxide adsorbates, via two processes, i.e., chemical oxidation by molecular oxygen and Langmuir-Hinshelwood surface oxidation.

Graphical abstract

Top (blue) platinum surface prepared in oxygen flame

Bottom (black) platinum surface prepared in hydrogen flame

Keywords

Platinum Oxidation Carbon monoxide Water Interfacial oxygen 

Notes

Acknowledgements

The author is a researcher at PEDECIBA United Nations and ANII. The author wishes to thank Mr. Luis Orsi for encouraging the main experiments of this paper.

Supplementary material

10008_2018_4190_MOESM1_ESM.docx (6.4 mb)
ESM 1 (DOCX 6508 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Electrochemical Engineering Group, School of SciencesUdelarMontevideoUruguay

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