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Atomic insight into hydration shells around facetted nanoparticles

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00005209
URN to cite this document: urn:nbn:de:bvb:703-epub-5209-2

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 (2019) Issue 1 . - No. 995.
ISSN 2041-1723
DOI der Verlagsversion: https://doi.org/10.1038/s41467-019-09007-1

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Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract

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
DDC Subjects: 500 Science > 530 Physics
500 Science > 540 Chemistry
Institutions of the University: 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 > Junior Professor Solid State Chemistry - Mesostructured Materials
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors > Junior Professor Solid State Chemistry - Mesostructured Materials - Juniorprof. Dr. Mirijam Zobel
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Former Professors
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-5209-2
Date Deposited: 13 Jan 2021 11:39
Last Modified: 13 Jan 2021 11:40
URI: https://epub.uni-bayreuth.de/id/eprint/5209

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