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Atomic insight into hydration shells around facetted nanoparticles

Title data

Thomä, Sabrina ; Krauss, Sebastian W. ; Eckardt, Mirco ; Chater, Phil ; Zobel, Mirijam:
Atomic insight into hydration shells around facetted nanoparticles.
In: Nature Communications. Vol. 10 (1 March 2019) Issue 1 . - No. 995.
ISSN 2041-1723
DOI: https://doi.org/10.1038/s41467-019-09007-1

Abstract in another language

Nanoparticles in solution interact with their surroundings via hydration shells. Although the structure of these shells is used to explain nanoscopic properties, experimental structural insight is still missing. Here we show how to access the hydration shell structures around colloidal nanoparticles in scattering experiments. For this, we synthesize variably functionalized magnetic iron oxide nanoparticle dispersions. Irrespective of the capping agent, we identify three distinct interatomic distances within 2.5 Å from the particle surface which belong to dissociatively and molecularly adsorbed water molecules, based on theoretical predictions. A weaker restructured hydration shell extends up to 15 Å. Our results show that the crystal structure dictates the hydration shell structure. Surprisingly, facets of 7 and 15 nm particles behave like planar surfaces. These findings bridge the large gap between spectroscopic studies on hydrogen bond networks and theoretical advances in solvation science.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Juniorprofessur Festkörperchemie - Mesostrukturierte Materialien > Juniorprofessur Festkörperchemie - Mesostrukturierte Materialien - Juniorprof. Dr. Mirijam Zobel
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Juniorprofessur Festkörperchemie - Mesostrukturierte Materialien
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 07 Mar 2019 09:50
Last Modified: 07 Mar 2019 11:03
URI: https://eref.uni-bayreuth.de/id/eprint/47864