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Superoleophilic Titania Nanoparticle Coatings with Fast Fingerprint Decomposition and High Transparency SCIE SCOPUS

Title
Superoleophilic Titania Nanoparticle Coatings with Fast Fingerprint Decomposition and High Transparency
Authors
Choi, Hyungryul J.Park, Kyoo-ChulLee, HyominCrouzier, ThomasRubner, Michael F.Cohen, Robert E.Barbastathis, GeorgeMcKinley, Gareth H.
Date Issued
2017-03-08
Publisher
ACS
Abstract
Low surface tension sebaceous liquids such as human fingerprint oils are readily deposited on high energy surfaces such as clean glass, leaving smudges that significantly lower transparency. There have been several attempts to prevent formation of these dactylograms on glass by employing oil-repellent textured surfaces. However, nanotextured superoleophobic coatings typically scatter visible light, and the intrinsic thermodynamic metastability of the composite superoleophobic state can result in failure of the oil repellency under moderate contact pressure. We develop titania-based porous nanoparticle coatings that are superoleophilic and highly transparent and which exhibit short time scales for decomposition of fingerprint oils under ultraviolet light. The mechanism by which a typical dactylogram is consumed combines wicking of the sebum into the nanoporous titania structure followed by photocatalytic degradation. We envision a wide range of applications because these TiO2 nanostructured surfaces remain photocatalytically active against fingerprint oils in natural sunlight and are also compatible with flexible glass substrates.
URI
https://oasis.postech.ac.kr/handle/2014.oak/39195
DOI
10.1021/acsami.6b14631
ISSN
1944-8244
Article Type
Article
Citation
ACS Applied Materials and Interfaces, vol. 9, no. 9, page. 8354 - 8360, 2017-03-08
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이효민Lee, Hyomin
Dept. of Chemical Enginrg
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