Graphene‐Based Macromolecular Assemblies for Scavenging Heavy Metals. Issue 10 (23rd October 2020)

• Record Type: Journal Article
• Authors: Chowdhury, Shamik; Pan, Sharadwata
• Is Part Of: ChemistryOpen. Volume 9:Issue 10(2020)
• Page Start: 1065
• Page End: 1073
• Publication Date: 2020-10-23
• Subjects: heavy metal ions -- adsorption -- graphene -- three-dimensional macrostructures -- self-assembly -- surface modification; Chemistry -- Periodicals; 540; 540.5
• DOI: 10.1002/open.202000182
• Languages: English
• ISSNs: 2191-1363

Abstract

Abstract: The integration of graphene or graphene oxide nanosheets into three‐dimensional (3D) graphene‐based macromolecular assemblies (GMAs), in the form of sponges, beads, fibres, films, and crumpled nanosheets, has greatly advanced their environmental remediation applications. This is attributed to the outstanding physicochemical characteristics and superlative mechanical features of 3D GMAs, including precise and physically linked permeable networks, enormous surface area, profound porosity, and high‐class sturdiness, amongst others. In this review, the recent advancements towards the exploration of 3D GMAs as an exciting new class of high‐performance adsorbents, for eliminating toxic heavy metal ions from both wastewater and freshwater, are systematically summarized and discussed, from both fundamental and applied perspectives. In particular, the numerous surface modification techniques that are actively pursued to enrich the metal adsorption capacity of 3D GMAs, are comprehensively examined. Additionally, associated challenges are pointed out and tactical research strategies and improvements are proposed, with an eye on the conceivable future. Abstract : Self‐assembly of graphene and graphene oxide nanosheets into 3D macrostructures is a powerful strategy to create multifunctional materials for sustainable environmental applications. In this Minireview, recent advances in the development of exotic graphene‐based macromolecular assemblies for heavy metal scavenging, are critically examined.