Growing Negative Pressure in Dissolved Solutes: Raman Monitoring of Solvent-Pulling Effect
| Autor: | Lionel Mercury, Kirill I. Shmulovich, Patrick Simon, Aurélien Canizares, Isabelle Bergonzi |
|---|---|
| Přispěvatelé: | Institut des Sciences de la Terre d'Orléans - UMR7327 (ISTO), Centre National de la Recherche Scientifique (CNRS)-Université d'Orléans (UO)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers en région Centre (OSUC), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Bureau de Recherches Géologiques et Minières (BRGM) (BRGM), Institute of Experimental Mineralogy, Russian Academy of Sciences [Moscow] (RAS), Conditions Extrêmes et Matériaux : Haute Température et Irradiation (CEMHTI), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université d'Orléans (UO), ANR-10-BLAN-0610,ConGé,Confinement géochimique de solutions aqueuses et transitions de phase dans les milieux finement poreux(2010), ANR-10-LABX-0100,VOLTAIRE,Geofluids and Volatil elements – Earth, Atmosphere, Interfaces – Resources and Environment(2010), ANR-11-EQPX-0036,PLANEX,Planète Expérimentation: simulation et analyse in-situ en conditions extrêmes(2011) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Quantitative Biology::Biomolecules
Chemical substance Tension (physics) Chemistry Solvation 02 engineering and technology Dielectric 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Superheating Solvent symbols.namesake General Energy Chemical physics [SDU]Sciences of the Universe [physics] Ultimate tensile strength symbols Organic chemistry Physical and Theoretical Chemistry 0210 nano-technology Raman spectroscopy |
| Zdroj: | Journal of Physical Chemistry C Journal of Physical Chemistry C, American Chemical Society, 2016, 120, pp.7697-7704. ⟨10.1021/acs.jpcc.6b01700⟩ |
| ISSN: | 1932-7447 1932-7455 |
| DOI: | 10.1021/acs.jpcc.6b01700⟩ |
| Popis: | International audience; Negative pressure in liquids is both an experimental fact and a usually-neglected state of condensed matter. Using synthetic fluid inclusions, namely closed vacuoles fabricated inside one solid host by hydrothermal processes, a Raman study was performed to examine how a superheated solvent (under negative pressure) interacts with its dissolved solutes. As a result, this contribution not only illustrates this well-known tensile state, but also displays evidence that a stretched solvent is able to pull on its dissolved solutes and put them also under a stretched state. The dielectric continuum hypothesis may lead to expect a stretching effect in solutes similar to the solvent’s, but our measurements evidence a damping mechanical effect (growing with tension), most probably related to solvation shells. One practical consequence is that the (experimentally known) super-solvent properties of superheated solutions are certainly related to the change of the chemical potential of solutes which results from the damping effect. This change can determine as well a change in the thermodynamic driving force of the superheated solution towards bubble nucleation. A more complex than usual picture of the aqueous solution physical chemistry emerges from this study. |
| Databáze: | OpenAIRE |
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