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Interaction of Surface-Modified Alumina Nanoparticles and Surfactants at an Oil/Water Interface: A Neutron Reflectometry, Scattering, and Enhanced Oil Recovery Study
,
Mario Campana,
Shirin Alexander ,
Andrew Barron
ACS Applied Materials and Interfaces, Volume: 14, Issue: 17, Pages: 19505 - 19514
Swansea University Authors:
Wafaa Al-Shatty , Shirin Alexander , Andrew Barron
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DOI (Published version): 10.1021/acsami.2c02228
Abstract
The evaluation of the mechanism of nanoparticle (NP)/surfactant complex adsorption at the critical oil/water interface was studied. A sophisticated technique (neutron reflectometry) was used to give a unique insight on NP/oil interactions in oil recovery systems. Herein, the adsorption of two modifi...
| Published in: | ACS Applied Materials and Interfaces |
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| ISSN: | 1944-8244 1944-8252 |
| Published: |
American Chemical Society (ACS)
2022
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa59904 |
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| Abstract: |
The evaluation of the mechanism of nanoparticle (NP)/surfactant complex adsorption at the critical oil/water interface was studied. A sophisticated technique (neutron reflectometry) was used to give a unique insight on NP/oil interactions in oil recovery systems. Herein, the adsorption of two modified alumina NPs with different degrees of hydrophobicity [hydrophilic = 2-[2-(2-methoxyethoxy)ethoxy]acetic acid and hydrophobic = octanoic acid (OCT)] stabilized with two different surfactants were studied at the oil/water interface. A thin layer of deuterated (D) and hydrogenated (H) hexadecane (contrast matching silicon substrate) oil was formed on a silicon block by a spin coating freeze process. The distribution of the NPs across the oil/water interface with the CTAB surfactant is similar between the two systems. NPs coated with CTAB have more affinity toward the oil/water interface, which explains the oil recovery increase by around 5% when flooding the core with the OCT-NP/CTAB system compared to the surfactant flooding alone. These results suggest that the NP/surfactant complexes can have potential usage in EOR recovery applications. |
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| Keywords: |
oil; water; interface; neutron reflectometry; functionalization; nanoparticles |
| College: |
Faculty of Science and Engineering |
| Funders: |
Llywodraeth Cymru Science and Technology Facilities Council |
| Issue: |
17 |
| Start Page: |
19505 |
| End Page: |
19514 |