Shear-aligned graphene oxide laminate/Pebax ultrathin composite hollow fiber membranes using a facile dip-coating approach

Zhang, Yatao and Shen, Qin and Hou, Jingwei and Sutrisna, Putu Doddy and Chen, Vicki (2017) Shear-aligned graphene oxide laminate/Pebax ultrathin composite hollow fiber membranes using a facile dip-coating approach. Journal of Material Chemistry A, 17 (5). pp. 7732-7737. ISSN 20507488

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Abstract

Graphene oxide (GO) has been considered as a promising candidate for molecular separation because of its capability to form highly efficient gas flow intergalleries. However, a major challenge is the lack of a facile, scalable, low-cost membrane fabrication approach, especially for the hollow fiber composite membrane with a thin selective layer. By using a facile dip-coating technique, we prepared a shear-aligned GO/Pebax composite hollow fiber membrane on a porous polymeric support. The incorporation of the aligned GO laminates significantly improved the original Pebax (polyethylene oxide–polyamide block copolymer) membrane permeance without compromising the CO2/N2 selectivity, and the composite membrane had good operational stability and enhanced mechanical strength. We further investigated the formation mechanism of the shear-aligned GO structure and discovered that the control of the withdrawal speed and liquid film thickness was a key factor. This dip-coating technique offers significant opportunities to exploit the GO-based membrane for industrial CO2 capture.

Item Type:	Article
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Engineering > Department of Chemical Engineering
Depositing User:	Putu Doddy S, 61107 - 200042
Date Deposited:	09 Mar 2020 04:07
Last Modified:	21 Mar 2022 08:14
URI:	http://repository.ubaya.ac.id/id/eprint/37578

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