用于分离重金属离子的聚苯胺改性氧化石墨烯复合膜

doi:10.11896/cldb.20070178

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Abstract Owing to its unique physical and chemical properties, the graphene oxide (GO)has recently received fairly extensive attention in the application of water treatment. However, the membrane by pure GO layer-by-layer self-assembling is practically limited due to its lower separation efficiency of divalent cation. In this paper, a novel membrane has been prepared by grafting polyaniline (PANI) on a GO membrane to overcome the above mentioned defect. The performance of GO and PANI/GO composite membranes was investigated and compared. The results have showed that the membrane composited of PANI and GO has demonstrated a higher water flux and repulsion. The important role of GO loading for composite membranes was shown. When the loading of GO is 150 mg·m^-2, a water flux of 214.5 L·m^-2·h^-1·MPa^-1 could be reached for the composite membranes. In terms of heavy metal removal, the retention is over 90% for the tested solutions of CuCl₂, ZnCl₂, BaCl₂, CdCl₂ and NiCl₂. The excellent separation performance of PANI/GO composite membranes has been mainly assigned to Donnan effect and size exclusion. Therefore, the PANI/GO composite membranes show a good prospect in the application fields of wastewater treatment.

Key words： polyaniline graphene oxide (GO) permeation flux rejection rate heavy metal ion

Published: 30 September 2021

CLC number:

X703

Fund:This work was financially supported by the Program for Guangdong Introducing Innovative and Entrepreneurial Team (2016ZT06C412).

About author:: Shiyang Zhang is a Ph.D candidate at Guangdong University of Technology. He is pursuing his doctor’s degree in Materials Science and Engineering since Sep. 2017. His current research interests focus on the preparation and modification of two-dimensional materials and their applications in the field of environment.

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	ZHANG Shiyang
	PENG Xiaokang
	LIAO Songyi
	MIN Yonggang

Cite this article:

ZHANG Shiyang,PENG Xiaokang,LIAO Songyi, et al. Polyaniline Modified Graphene Oxide Composite Membranes for Separation of Heavy Metal Ion[J]. Materials Reports, 2021, 35(18): 18030-18034.

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http://www.mater-rep.com/EN/10.11896/cldb.20070178 OR http://www.mater-rep.com/EN/Y2021/V35/I18/18030

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