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Tunable Surface Properties of Aluminum Oxide Nanoparticles from Highly Hydrophobic to Highly Hydrophilic

Wafaa Al-Shatty, Alex Lord Orcid Logo, Shirin Alexander Orcid Logo, Andrew Barron Orcid Logo

ACS Omega, Volume: 2, Issue: 6, Pages: 2507 - 2514

Swansea University Authors: Alex Lord Orcid Logo, Shirin Alexander Orcid Logo, Andrew Barron Orcid Logo

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DOI (Published version): 10.1021/acsomega.7b00279

Abstract

The formation of materials with tunable wettability is important for applications ranging from antifouling to waterproofing surfaces. We report the use of various low-cost and nonhazardous hydrocarbon materials to tune the surface properties of aluminum oxide nanoparticles (NPs) from superhydrophili...

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Published in: ACS Omega
ISSN: 2470-1343 2470-1343
Published: 2017
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa34209
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Abstract: The formation of materials with tunable wettability is important for applications ranging from antifouling to waterproofing surfaces. We report the use of various low-cost and nonhazardous hydrocarbon materials to tune the surface properties of aluminum oxide nanoparticles (NPs) from superhydrophilic to superhydrophobic through covalent functionalization. The hydrocarbon surfaces are compared with a fluorinated surface for wettability and surface energy properties. The role of NPs’ hydrophobicity on their dynamic interfacial behavior at the oil–water interface and their ability to form stable emulsions is also explored. The spray-coated NPs provide textured surfaces (regardless of functionality), with water contact angles (θ) of 10–150° based on their surface functionality. The superhydrophobic NPs are able to reduce the interfacial tension of various oil–water interfaces by behaving as surfactants.
College: Faculty of Science and Engineering
Issue: 6
Start Page: 2507
End Page: 2514

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