Graphene-based membranes for molecular and ionic separations in aqueous environments

doi:10.1016/j.cjche.2017.05.008

Abstract

Abstract: Graphene-based laminar materials open up to new applications for molecular and ionic separations in aqueous environments due to the atomic thickness, mechanical strength, chemical stability and other fantastic properties. Recent advances on controlling the structure and chemical functionality of graphene-based membranes can potentially lead to new classes of tools for desalination, dehydration, toxicant rejection, specific ionic separation and so on. The recent developments of graphene-based membranes prepared by using a concept to form interlayer space between graphene sheets and creating nanoscale or sub-nanoscale pores in a graphene lattice, together with their mass-transfer mechanisms and potential applications in aqueous environments are reviewed. A summary and outlook is further provided on the opportunities and challenges in this arising field. This article is expected to address the intricate details of mass transport through two distinct graphene-based membranes in aqueous environment and to optimize the fabrication of graphene-based membranes as a fascinating separation system for a wide range of applications.

Key words: Graphene membranes, Two-dimensional materials, Separation, Water treatment, Desalination, Ion selectivity

摘要： Graphene-based laminar materials open up to new applications for molecular and ionic separations in aqueous environments due to the atomic thickness, mechanical strength, chemical stability and other fantastic properties. Recent advances on controlling the structure and chemical functionality of graphene-based membranes can potentially lead to new classes of tools for desalination, dehydration, toxicant rejection, specific ionic separation and so on. The recent developments of graphene-based membranes prepared by using a concept to form interlayer space between graphene sheets and creating nanoscale or sub-nanoscale pores in a graphene lattice, together with their mass-transfer mechanisms and potential applications in aqueous environments are reviewed. A summary and outlook is further provided on the opportunities and challenges in this arising field. This article is expected to address the intricate details of mass transport through two distinct graphene-based membranes in aqueous environment and to optimize the fabrication of graphene-based membranes as a fascinating separation system for a wide range of applications.

关键词: Graphene membranes, Two-dimensional materials, Separation, Water treatment, Desalination, Ion selectivity

Zhuang Liu, Wei Wang, Xiaojie Ju, Rui Xie, Liangyin Chu. Graphene-based membranes for molecular and ionic separations in aqueous environments[J]. Chin.J.Chem.Eng., 2017, 25(11): 1598-1605.

Zhuang Liu, Wei Wang, Xiaojie Ju, Rui Xie, Liangyin Chu. Graphene-based membranes for molecular and ionic separations in aqueous environments[J]. Chinese Journal of Chemical Engineering, 2017, 25(11): 1598-1605.

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