Thermodynamic properties of pinned nanobubbles
We present molecular dynamics simulations to study the thermodynamics of nanobubbles trapped at the mouth of narrow slit pores. Except when the slit dimensions are comparable to typical molecular sizes, the predictions of macroscopic thermodynamic theory are recovered by our simulations. Our simulations confirm that in this case, the internal pressure of stable nanobubbles is independent of the bubble radius and the surface tension and only depends on the bulk properties of the solute-containing solution, i.e., the chemical potential balance. However, in the case of extreme confinement, the pressure is not a suitable quantity to describe the thermodynamics of the bubbles, while the balance of the chemical potentials is.
Authors
- Jure Dobnikar (ORCID: https://orcid.org/0000-0002-1169-6619)
- Daan Frenkel (ORCID: https://orcid.org/0000-0002-6362-2021)
- Hongguang Zhang (ORCID: https://orcid.org/0000-0002-1504-4538)
- Zhenjiang Guo (ORCID: https://orcid.org/0000-0002-0521-7132)
- Xianren Zhang (ORCID: https://orcid.org/0000-0002-8026-9012)
Institutions
- Chinese Academy of Sciences (CN)
- University of Cambridge (GB)
- Shandong Institute of Automation (CN)
- Physical Sciences (United States) (US)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- University of Chinese Academy of Sciences (CN)
- Beijing University of Chemical Technology (CN)
Publication Details
- Journal
- The Journal of Chemical Physics
- Published
- 2024-11-26
- DOI
- https://doi.org/10.1063/5.0225131
- Citations
- 6
- Primary Topic
- Minerals Flotation and Separation Techniques
- Type
- article
- Field-Weighted Citation Impact
- 1.21
Funders
- National Natural Science Foundation of China
- Key Research Program of Frontier Science, Chinese Academy of Sciences