Issue 85, 2016

A facile synthesis of a highly stable superhydrophobic nanofibrous film for effective oil/water separation

Abstract

An oil/water separation film with excellent durability and stable recyclability is highly desired for the treatment of oil containing effluents, like industrial oily wastewater. Herein, a novel superhydrophobic nanofibrous film (SNF) was fabricated by growing TiO2 on a collagen fiber membrane (CFM), followed by surface coating of vinyl triethoxysilane. The as-prepared SNF was well characterized by SEM, SEM-EDS and XPS. Due to the unique structure, the SNF featured superhydrophobicity with a water contact angle (WCA) of 153°. When applied in the separation of oil/water mixtures, SNF exhibited a high separation efficiency of ∼97% in 5 circles, and it showed more effective oil/water separation efficiency compared to the commercial PTFE film. SNF was also effective for the separation of gasoline/water or diesel oil/water mixtures with varied volume ratios, and all the corresponding separation efficiencies were higher than 97% even after 5 cycles. In addition, SNF could still maintain superhydrophobicity with WCA around 150° after being treated by high temperature (120 °C), ultraviolet irradiation, water or organic solvent immersion for 24 h, manifesting an excellent durability.

Graphical abstract: A facile synthesis of a highly stable superhydrophobic nanofibrous film for effective oil/water separation

Supplementary files

Article information

Article type
Paper
Submitted
13 Jul 2016
Accepted
22 Aug 2016
First published
22 Aug 2016

RSC Adv., 2016,6, 82352-82358

A facile synthesis of a highly stable superhydrophobic nanofibrous film for effective oil/water separation

X. Kong, J. Zhang, X. Liao, X. Huang and B. Shi, RSC Adv., 2016, 6, 82352 DOI: 10.1039/C6RA17832D

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