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Water Nanochannels in Ultrathin Clinochlore Phyllosilicate Mineral with Ice-like Behavior

de Oliveira, Raphaela ; Freitas, Luisa V.C. ; Chacham, Helio ; Freitas, Raul O. ; Moreira, Roberto L. ; Chen, Huaiyu LU ; Hammarberg, Susanna LU ; Wallentin, Jesper LU ; Rodrigues-Junior, Gilberto and Marçal, Lucas A.B. LU , et al. (2024) In Journal of Physical Chemistry C
Abstract

Water is the matrix of life, and its confinement in nanocavities is a central topic from geophysics to nanotribology. Phyllosilicate layered minerals provide natural nanocavities for water due to their capacity to hydrate by confining water molecules in the interlamellar space. However, the hydration of phyllosilicates at the nanoscale is not a fully understood process and depends on the geological specimens. In this work, we report the formation of aqueous nanochannels in the interlamellar space of ultrathin clinochlore phyllosilicate mineral using infrared scattering-type scanning near-field optical microscopy and Kelvin probe force microscopy. We demonstrate that nanoconfinement of water in clinochlore changes the overall mechanical,... (More)

Water is the matrix of life, and its confinement in nanocavities is a central topic from geophysics to nanotribology. Phyllosilicate layered minerals provide natural nanocavities for water due to their capacity to hydrate by confining water molecules in the interlamellar space. However, the hydration of phyllosilicates at the nanoscale is not a fully understood process and depends on the geological specimens. In this work, we report the formation of aqueous nanochannels in the interlamellar space of ultrathin clinochlore phyllosilicate mineral using infrared scattering-type scanning near-field optical microscopy and Kelvin probe force microscopy. We demonstrate that nanoconfinement of water in clinochlore changes the overall mechanical, optical, and dielectric properties of the system. We propose a capacitive model that describes the dielectric response of the aqueous nanochannels. Our model is endorsed by a robust crystal truncation rod analysis of synchrotron X-ray diffraction data. We found that clinochlore termination combines hydrated structures ordered along the c-axis. We also find evidence of ice-like behavior of the water nanoconfined in clinochlore by Fourier-transform infrared spectroscopy. Notably, our work introduces clinochlore as a natural platform for water confinement in two-dimensional systems that can be engineered for several applications in the frontiers of nanotechnology.

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publishing date
type
Contribution to journal
publication status
epub
subject
in
Journal of Physical Chemistry C
pages
11 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85197559118
ISSN
1932-7447
DOI
10.1021/acs.jpcc.4c02170
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2024 American Chemical Society.
id
61ef530b-58f6-42e8-a667-ec888d6cac18
date added to LUP
2024-07-16 15:00:11
date last changed
2024-08-12 14:13:59
@article{61ef530b-58f6-42e8-a667-ec888d6cac18,
  abstract     = {{<p>Water is the matrix of life, and its confinement in nanocavities is a central topic from geophysics to nanotribology. Phyllosilicate layered minerals provide natural nanocavities for water due to their capacity to hydrate by confining water molecules in the interlamellar space. However, the hydration of phyllosilicates at the nanoscale is not a fully understood process and depends on the geological specimens. In this work, we report the formation of aqueous nanochannels in the interlamellar space of ultrathin clinochlore phyllosilicate mineral using infrared scattering-type scanning near-field optical microscopy and Kelvin probe force microscopy. We demonstrate that nanoconfinement of water in clinochlore changes the overall mechanical, optical, and dielectric properties of the system. We propose a capacitive model that describes the dielectric response of the aqueous nanochannels. Our model is endorsed by a robust crystal truncation rod analysis of synchrotron X-ray diffraction data. We found that clinochlore termination combines hydrated structures ordered along the c-axis. We also find evidence of ice-like behavior of the water nanoconfined in clinochlore by Fourier-transform infrared spectroscopy. Notably, our work introduces clinochlore as a natural platform for water confinement in two-dimensional systems that can be engineered for several applications in the frontiers of nanotechnology.</p>}},
  author       = {{de Oliveira, Raphaela and Freitas, Luisa V.C. and Chacham, Helio and Freitas, Raul O. and Moreira, Roberto L. and Chen, Huaiyu and Hammarberg, Susanna and Wallentin, Jesper and Rodrigues-Junior, Gilberto and Marçal, Lucas A.B. and Calligaris, Guilherme A. and Cadore, Alisson R. and Krambrock, Klaus and Barcelos, Ingrid D. and Malachias, Angelo}},
  issn         = {{1932-7447}},
  language     = {{eng}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry C}},
  title        = {{Water Nanochannels in Ultrathin Clinochlore Phyllosilicate Mineral with Ice-like Behavior}},
  url          = {{http://dx.doi.org/10.1021/acs.jpcc.4c02170}},
  doi          = {{10.1021/acs.jpcc.4c02170}},
  year         = {{2024}},
}