层层自组装法制备氧化石墨烯复合单价选择性离子交换膜

doi:10.11896/cldb.201906027

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Abstract M onovalent-selective ion-exchange membranes were fabricated by adding graphene oxide (GO) to polyacrylic acid (PAA) and alternately deposited on the surface of cation-exchange membrane with polyetherimide (PEI) through layer-by-layer self-assembly (LBL).The result indicated that the composite membranes terminated with PEI had higher separation efficiency. GO was deposited onto the membrane surface evenly and continuously with the assembly of polyelectrolyte. The surface resistance of the composite membranes increased with the assembled number of bilayers. Moreover, the addition of GO is beneficial to reduce the membrane resistance compared to the multilayer membranes without GO. The composite membranes exhibited improved separation efficiency with the assembled bilayers. Besides, the separation efficiency increased firstly and then decreased with the GO concentration and showed the highest selectivity with GO concentration of 0.5 g/L.

Key words： graphene oxide cation-exchange membrane layer-by-layer assembly monovalent selectivity

Published: 03 April 2019

CLC number:

O647

Fund:This work was financially supported by the Tianjin Research Program of Application Foundation and Advanced Technology(14JCZDJC38900) and the Hebei Key Research and Development Program (17393601D).

About author:: Miao Feng is currently a Master degree candidate in chemical engineering of Hebei University of Technology. Huining Deng received her PhD. degree in chemical engineering from Tianjin University in 2005.

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	FENG Miao
	LIU Yan
	DENG Huining
	WANG Zixia

Cite this article:

FENG Miao,LIU Yan,DENG Huining, et al. Preparation of Monovalent-selective Ion-exchange Membrane with Graphene Oxide Deposition by Layer-by-Layer Assembly[J]. Materials Reports, 2019, 33(6): 1057-1060.

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http://www.mater-rep.com/EN/10.11896/cldb.201906027 OR http://www.mater-rep.com/EN/Y2019/V33/I6/1057

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