Issue 4, 2017

Synthesis of graphene oxide/polyimide mixed matrix membranes for desalination

Abstract

Nanohybrid graphene oxide (GO)/polyimide (PI) mixed matrix membranes (MMMs) were prepared by dispersing GO into PI through wet phase inversion method. The structure of GO/PI MMMs was characterized by using XRD, FT-IR and XPS. FESEM was used to analyze the morphology of the GO/PI MMMs. The hydrophilicity of the GO/PI MMMs was determined by static water contact angles. The performances of the GO/PI MMMs were evaluated for desalination of seawater through pervaporation. The GO/PI MMMs display excellent water permeability and salt rejection for desalination of different concentrations of seawater. At 90 °C, the GO/PI MMMs exhibit a high water flux (36.1 kg m−2 h−1) and a high salt rejection (99.9%). Further, the GO/PI MMM displays a high stability for seawater desalination. This high separation performance combined with high stability and facile fabrication route recommend the developed GO/PI MMMs as a promising candidate for desalination of seawater.

Graphical abstract: Synthesis of graphene oxide/polyimide mixed matrix membranes for desalination

Supplementary files

Article information

Article type
Paper
Submitted
09 okt 2016
Accepted
28 nov 2016
First published
12 jan 2017
This article is Open Access
Creative Commons BY license

RSC Adv., 2017,7, 2211-2217

Synthesis of graphene oxide/polyimide mixed matrix membranes for desalination

B. Feng, K. Xu and A. Huang, RSC Adv., 2017, 7, 2211 DOI: 10.1039/C6RA24974D

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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