Raman spectroscopy and shadowgraph visualization of excess protons in high-voltage electrolysis of pure water

Elmar C. Fuchs, Doekle Yntema, Jakob Woisetschläger

Research output: Contribution to journalArticleResearchpeer-review

Abstract

In a horizontal electrohydrodynamic bridge experiment, protons are created at the anode via high-voltage electrolysis. The hydrated protons can be observed both optically using shadowgraphy and Raman spectroscopy. If the system is taken out of its electrochemical equilibrium by a sudden disruption of the bridge, excess protons remain in the anolyte. These protons are observed via an enhancement of solvated protons and their accumulation at the liquid surface, causing a residual electric field of several kV/m and a reduction of surface tension by a few mN/m as they accumulate at and escape through the surface.
Original languageEnglish
Article number365302
Number of pages10
JournalJournal of physics / D
Volume52
DOIs
Publication statusPublished - 5 Jul 2019

Fingerprint

shadowgraph photography
electrolysis
Electrolysis
Raman spectroscopy
Protons
high voltages
Visualization
protons
Water
Electric potential
water
Electrohydrodynamics
electrohydrodynamics
liquid surfaces
escape
Surface tension
Anodes
interfacial tension
anodes
Electric fields

Keywords

  • floating water bridge, excess charge, high-voltage electrolysis, hydrated proton, electrohydrodynamic liquid bridge, Raman scattering

Fields of Expertise

  • Sonstiges

Treatment code (Nähere Zuordnung)

  • Experimental

Cite this

Raman spectroscopy and shadowgraph visualization of excess protons in high-voltage electrolysis of pure water. / Fuchs, Elmar C.; Yntema, Doekle; Woisetschläger, Jakob.

In: Journal of physics / D, Vol. 52, 365302, 05.07.2019.

Research output: Contribution to journalArticleResearchpeer-review

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AB - In a horizontal electrohydrodynamic bridge experiment, protons are created at the anode via high-voltage electrolysis. The hydrated protons can be observed both optically using shadowgraphy and Raman spectroscopy. If the system is taken out of its electrochemical equilibrium by a sudden disruption of the bridge, excess protons remain in the anolyte. These protons are observed via an enhancement of solvated protons and their accumulation at the liquid surface, causing a residual electric field of several kV/m and a reduction of surface tension by a few mN/m as they accumulate at and escape through the surface.

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