ISIS Neutron and Muon Source Data Journal

Effect of Film Oxidation on Hygroscopic Behaviour and Surface Structural Changes during Ozonolysis of Thin-Film Fatty Acid Aerosol Proxies

Abstract: Further to a recent rapid access INTER beamtime where we obtained very promising results, we propose a neutron reflectometry (NR) experiment on spin-coated thin films of self-assembled fatty acids on Si wafers as proxies for atmospheric aerosols. We aim (i) to observe differences in hygroscopic behaviour between pristine and oxidised films of our d-oleic acid/sodium oleate mixture, used as an atmospheric aerosol thin film proxy, and (ii) to characterise surface structure changes during oxidation by ozone. We have shown that we can control the film thickness by spin-coating films at different spin speeds and solution concentrations. These experiments are a key contribution to a wider study involving Diamond Lightsource on the effect of organic film thickness and structure on ozonolysis reaction kinetics and the effect of oxidation on hygroscopic behaviour.

Public release date: 11 May 2024

Principal Investigator: Professor Christian Pfrang
Experimenter: Dr Adam Milsom
Local Contact: Dr Maxmilian Skoda
Experimenter: Dr Adam Squires

DOI: 10.5286/ISIS.E.RB2010748-1

Parent DOI: 10.5286/ISIS.E.RB2010748

ISIS Experiment Number: RB2010748

Part Number: 1

Date of Experiment: 06 May 2021

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 Christian Pfrang et al; (2021): Effect of Film Oxidation on Hygroscopic Behaviour and Surface Structural Changes during Ozonolysis of Thin-Film Fatty Acid Aerosol Proxies, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010748-1

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