New Design of a Sample Cell for Neutron Reflectometry in Liquid–Liquid Systems and Its Application for Studying Structures at Air–Liquid and Liquid–Liquid Interfaces

Knowledge of interfacial structures in liquid–liquid systems is imperative, especially for improving two-phase biological and chemical reactions. Therefore, we developed a new sample cell for neutron reflectometry (NR), which enables us to observe the layer structure around the interface, and invest...

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Bibliographic Details
Published in:Applied sciences 2022-02, Vol.12 (3), p.1215
Main Authors: Akutsu-Suyama, Kazuhiro, Yamada, Norifumi L., Ueda, Yuki, Motokawa, Ryuhei, Narita, Hirokazu
Format: Article
Language:English
Subjects:
Adsorption
adsorption structure
air–liquid interface
Aqueous solutions
Chemical reactions
Electrolytes
Experiments
Interfaces
liquid–liquid interface
neutron reflectometry
Neutrons
Phase transitions
Reagents
Sensors
Sodium dodecyl sulfate
Solvents
Surfactants
Toluene
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Summary:Knowledge of interfacial structures in liquid–liquid systems is imperative, especially for improving two-phase biological and chemical reactions. Therefore, we developed a new sample cell for neutron reflectometry (NR), which enables us to observe the layer structure around the interface, and investigated the adsorption behavior of a typical surfactant, sodium dodecyl sulfate (SDS), on the toluene-d8-D2O interface under the new experimental conditions. The new cell was characterized by placing the PTFE frame at the bottom to produce a smooth interface and downsized compared to the conventional cell. The obtained NR profiles were readily analyzable and we determined a slight difference in the SDS adsorption layer structure at the interface between the toluene-d8-D2O and air-D2O systems. This could be owing to the difference in the adsorption behavior of the SDS molecules depending on the interfacial conditions.
ISSN:2076-3417
2076-3417
DOI:10.3390/app12031215