Durable Superhydrophobic and Superoleophilic Electrospun Nanofibrous Membrane for Oil-Water Emulsion Separation

Wenjing Ma, Juntao Zhao, Olayinka Oderinde, Jingquan Han, Zhongche Liu, Buhong Gao, Ranhua Xiong, Qilu Zhang, Shaohua Jiang, Chaobo Huang

J Colloid Interface Sci. 2018 Dec 15;532:12-23.

PMID: 30077062

Abstract:

Marinepollution andindustrial wastewater have caused serious environmental pollution, thereby resulting into an alarming damage to public health in the past decades, hence the high demand for, cost effective, energy-efficient oil-water separation technologies for the removal of oil contaminants from such water. Herein, we report a facile method to fabricate superhydrophobic/superoleophilic membrane by immersing a polyimide (PI)-based nanofibrous membrane into a water/ethanol/ammonia/dopamine mixture, followed by modification with 1H, 1H, 2H, 2H-perfluorodecanethiol (PFDT). The PI-based membrane exhibited water contact angle (WCA) above 153°, while the oil contact angle (OCA) approached 0°, thereby promoting an outstanding chemical stability which sustained its superhydrophobicity when immersed in aqueous solutions at different pH values. Additionally, the PI-based membrane possesses ultrahigh flux, high separation efficiency and good reusability in oil-water separation. The aforementioned properties, as well as the easily scale-up preparation process ensure that this promising as-fabricated membrane can be applied for practical environmental applications including treatment of oily wastewater and oil spillage clean-up.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP34143743	1H,1H,2H,2H-Perfluorodecanethiol		34143-74-3	Price