ISIS Neutron and Muon Source Data Journal

Insight into the adsorbed water layer of hydration shells around iron oxide nanoparticles

Abstract: With this proposal we want to study the (deuterated) hydration shell of facetted iron oxide nanoparticles (IONPs). IONP–water interfaces are of great importance for biomedical applications. Recently, we showed by X-ray PDF, that even 7 nm IONPs exhibit pronounced water ordering in the adsorbed water layer and beyond out to 15 Å. Thereby, we distinguished interatomic distances of adsorbed H2O at < 3 Å. Yet, questions regarding the interfacial hydrogen bond network remain. The higher sensitivity of neutrons towards H and D will allow to elucidate the contributions of surface O-D groups and ligands. Therefore, we aim to characterize the interfacial structure of dry and wet (protonated and deuteriated) IONP powders as well as the hydration shells in 0.5 wt% IONP dispersions. This proposal will shed light on the complex interplay of ligand, solvent and nanoparticle at colloidal interfaces.

Principal Investigator: Professor Mirijam Zobel
Local Contact: Dr Tristan Youngs
Experimenter: Mr Nils Prinz
Experimenter: Miss Sabrina Thomä

DOI: 10.5286/ISIS.E.RB1920266

ISIS Experiment Number: RB1920266

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Professor Mirijam Zobel et al; (2019): Insight into the adsorbed water layer of hydration shells around iron oxide nanoparticles, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1920266

Data is released under the CC-BY-4.0 license.