Back to Search
Start Over
Effect of Surfactant on Electrochemically Generated Surface Nanobubbles
- Source :
- Analytical Chemistry. 93:5170-5176
- Publication Year :
- 2021
- Publisher :
- American Chemical Society (ACS), 2021.
-
Abstract
- Surfactants, mimics of contamination, play an important role in nanobubble nucleation, stability, and growth at the electrode surface. Herein, we utilize single-molecule fluorescence microscopy as a sensitive imaging tool to monitor nanobubble dynamics in the presence of a surfactant. Our results show that the presence of anionic and nonionic surfactants increase the rate of nanobubble nucleation at all potentials in a voltage scan. The fluorescence and electrochemical responses indicate the successful lowering of the critical gas concentration needed for nanobubble nucleation across all voltages. Furthermore, we demonstrate that the accumulation of surfactants at the gas-liquid interface changes the interaction of fluorophores with the nanobubble surface. Specifically, differences in fluorophore intensity and residence lifetime at the nanobubble surface suggest that the labeling of nanobubbles is affected by the nature of the nanobubble (size, shape, etc.) and the structure of the gas-liquid interface (surfactant charge, hydrophobicity, etc.).
- Subjects :
- Fluorophore
Chemistry
010401 analytical chemistry
Nucleation
Gas concentration
010402 general chemistry
Electrochemistry
01 natural sciences
Fluorescence
0104 chemical sciences
Analytical Chemistry
chemistry.chemical_compound
Pulmonary surfactant
Chemical engineering
Electrode
Fluorescence microscope
Subjects
Details
- ISSN :
- 15206882 and 00032700
- Volume :
- 93
- Database :
- OpenAIRE
- Journal :
- Analytical Chemistry
- Accession number :
- edsair.doi.dedup.....d1fca1c436335f3cf1749a3f5e150de7