Microscopic Kinetics Pathway of Salt Crystallization in Graphene Nanocapillaries. Wang, L., Chen, J., Cox, S., Liu, L., Sosso, G., Li, N., Gao, P., Michaelides, A., Wang, E., & Bai, X. Physical Review Letters, 126(13):136001, March, 2021. Publisher: American Physical Society
Paper doi abstract bibtex The fundamental understanding of crystallization, in terms of microscopic kinetic and thermodynamic details, remains a key challenge in the physical sciences. Here, by using in situ graphene liquid cell transmission electron microscopy, we reveal the atomistic mechanism of NaCl crystallization from solutions confined within graphene cells. We find that rock salt NaCl forms with a peculiar hexagonal morphology. We also see the emergence of a transitory graphitelike phase, which may act as an intermediate in a two-step pathway. With the aid of density functional theory calculations, we propose that these observations result from a delicate balance between the substrate-solute interaction and thermodynamics under confinement. Our results highlight the impact of confinement on both the kinetics and thermodynamics of crystallization, offering new insights into heterogeneous crystallization theory and a potential avenue for materials design.
@article{wang_microscopic_2021,
title = {Microscopic {Kinetics} {Pathway} of {Salt} {Crystallization} in {Graphene} {Nanocapillaries}},
volume = {126},
url = {http://0.link.aps.org/doi/10.1103/PhysRevLett.126.136001},
doi = {10.1103/PhysRevLett.126.136001},
abstract = {The fundamental understanding of crystallization, in terms of microscopic kinetic and thermodynamic details, remains a key challenge in the physical sciences. Here, by using in situ graphene liquid cell transmission electron microscopy, we reveal the atomistic mechanism of NaCl crystallization from solutions confined within graphene cells. We find that rock salt NaCl forms with a peculiar hexagonal morphology. We also see the emergence of a transitory graphitelike phase, which may act as an intermediate in a two-step pathway. With the aid of density functional theory calculations, we propose that these observations result from a delicate balance between the substrate-solute interaction and thermodynamics under confinement. Our results highlight the impact of confinement on both the kinetics and thermodynamics of crystallization, offering new insights into heterogeneous crystallization theory and a potential avenue for materials design.},
number = {13},
urldate = {2021-04-07},
journal = {Physical Review Letters},
author = {Wang, Lifen and Chen, Ji and Cox, Stephen J. and Liu, Lei and Sosso, Gabriele C. and Li, Ning and Gao, Peng and Michaelides, Angelos and Wang, Enge and Bai, Xuedong},
month = mar,
year = {2021},
note = {Publisher: American Physical Society},
pages = {136001},
}
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