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Imaging Single Nanobubbles of H2 and O2 During the Overall Water Electrolysis with Single-Molecule Fluorescence Microscopy
- Source :
- Analytical Chemistry. 92:3682-3688
- Publication Year :
- 2020
- Publisher :
- American Chemical Society (ACS), 2020.
-
Abstract
- In this work, we describe the preparation and use of a thin metal film modified Indium Tin Oxide (ITO) electrode as a highly conductive, transparent, and electrocatalytically active electrode material for studying nanobubbles generated at the electrode/solution interface. Hydrogen and oxygen nanobubbles were generated from water electrolysis on the surface of a Au/Pd alloy modified ITO electrode. The formation of single H2 and O2 nanobubbles was imaged in real time during a potential scan using single-molecule fluorescence microscopy. Our results show that while O2 nanobubbles can be detected at an early stage in the oxygen evolution reaction (OER), the formation of H2 nanobubbles requires a significant overpotential. Our study shows that thin-film-coated ITO electrodes are simple to make and can be useful electrode substrates for (single molecule) spectroelectrochemistry research.
- Subjects :
- Electrolysis
Electrolysis of water
Hydrogen
010401 analytical chemistry
Oxygen evolution
chemistry.chemical_element
Overpotential
010402 general chemistry
01 natural sciences
0104 chemical sciences
Analytical Chemistry
law.invention
Indium tin oxide
chemistry
Chemical engineering
law
Electrode
Microscopy
Subjects
Details
- ISSN :
- 15206882 and 00032700
- Volume :
- 92
- Database :
- OpenAIRE
- Journal :
- Analytical Chemistry
- Accession number :
- edsair.doi...........977c7b2bb498dff79be16b311c84003f