The effect of hydration number on the interfacial transport of sodium ions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73591659" target="_blank" >RIV/61989592:15310/18:73591659 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/18:00491035

Result on the web

<a href="https://www.nature.com/articles/s41586-018-0122-2.pdf" target="_blank" >https://www.nature.com/articles/s41586-018-0122-2.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41586-018-0122-2" target="_blank" >10.1038/s41586-018-0122-2</a>

Result language

angličtina

Original language name

The effect of hydration number on the interfacial transport of sodium ions

Original language description

Ion hydration and transport at interfaces are relevant to a wide range of applied fields and natural processes(1-5). Interfacial effects are particularly profound in confined geometries such as nanometre-sized channels(6-8), where the mechanisms of ion transport in bulk solutions may not apply(9,10). To correlate atomic structure with the transport properties of hydrated ions, both the interfacial inhomogeneity and the complex competing interactions among ions, water and surfaces require detailed molecular-level characterization. Here we constructed individual sodium ion (Na+) hydrates on a NaCl(001) surface by progressively attaching single water molecules (one to five) to the Na+ ion using a combined scanning tunnelling microscopy and noncontact atomic force microscopy system. We found that the Na+ ion hydrated with three water molecules diffuses orders of magnitude more quickly than other ion hydrates. Ab initio calculations revealed that such high ion mobility arises from the existence of a metastable state, in which the three water molecules around the Na+ ion can rotate collectively with a rather small energy barrier. This scenario would apply even at room temperature according to our classical molecular dynamics simulations. Our work suggests that anomalously high diffusion rates for specific hydration numbers of ions are generally determined by the degree of symmetry match between the hydrates and the surface lattice.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/GA18-09914S" target="_blank" >GA18-09914S: Formation of covalent molecular complexes on surfaces driven by light induced chemical reactions</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

NATURE

ISSN

0028-0836

e-ISSN

—

Volume of the periodical

557

Issue of the periodical within the volume

7707

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

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UT code for WoS article

000433412900049

EID of the result in the Scopus database

2-s2.0-85048275808