Photocatalytically Active Superhydrophilic/Superoleophobic Coating

Copyright © 2020 American Chemical Society..

Hydrophilic materials are easily fouled by organic contaminants owing to their high surface energy, and this oil-fouling problem severely hinders their use in practical applications. To address this challenge, herein, a hydrophilic coating with oil repellency and photocatalytic activity is developed by a spray-casting process. In the air surrounding, a water droplet spreads over the coating surface completely, while oil droplets exhibit contact angles more than 150° and moving on the coating freely. The water-wetted coating still had oil repellency, as the water layer on the coating surface can act as a lubricant to repel oil. Although methylene blue aqueous solution contaminates the coating by wetting it completely, these water-soluble organic molecules can be removed by UV illumination, due to the photocatalytic activity of the coating. Exploiting its water-attracting and oil-repelling properties, the coating deposited on a copper mesh is applied as a multiplatform for oil-water separation with high separation efficiency. This study provides a novel and efficient way to solve the oil-fouling problem of hydrophilic materials.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:5

Enthalten in:

ACS omega - 5(2020), 20 vom: 26. Mai, Seite 11448-11454

Sprache:

Englisch

Beteiligte Personen:

Lu, Jingwei [VerfasserIn]
Zhu, Xiaotao [VerfasserIn]
Miao, Xiao [VerfasserIn]
Song, Yuanming [VerfasserIn]
Liu, Li [VerfasserIn]
Ren, Guina [VerfasserIn]
Li, Xiangming [VerfasserIn]

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Journal Article

Anmerkungen:

Date Revised 28.09.2020

published: Electronic-eCollection

Citation Status PubMed-not-MEDLINE

doi:

10.1021/acsomega.0c00474

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM310586631