Porous Graphene Materials for Water Remediation

Abstract

Water remediation has been a critical issue over the past decades due to the expansion of wastewater discharge to the environment. Currently, a variety of functional materials have been successfully prepared for water remediation applications. Among them, graphene is an attractive candidate due to its high specific surface area, tunable surface behavior, and high strength. This Concept paper summarizes the design strategy of porous graphene materials and their applications in water remediation, such as the cleanup of oil, removal of heavy metal ions, and elimination of water soluble organic contaminants. The progress made so far will guide further development in structure design strategy of porous materials based on graphene and exploration of such materials in environmental remediation.

Programmable Nanocarbon‐Based Architectures for Flexible Supercapacitors

“…[ 35 ] Graphene sheets and its derivatives are able be acted as basic building blocks to programmably construct macroscopic graphene structures. [22][23][24] However, different from CNTs, graphene sheets tend to restack during the assembling process due to the strong π-π stacking and van der Waals force between graphene sheets. As a result, the unique ultrahigh surface area of graphene sheets would be lost.…”

pH-tunable surface charge of chitosan/graphene oxide composite adsorbent for efficient removal of multiple pollutants from water

“…Since high-performance absorbent materials is the key to solve aforementioned problems, to date, different kinds of novel adsorbents have been reported, such as carbon-based nanomaterials, natural polymers and so on [9,11,12]. These adsorbents have specific features that meet the growing needs for complicated or refined wastewater remediation [12,13].…”

“…Two-dimensional graphene oxide (GO), which is the most important precursor/derivative of graphene [14] with atomic thickness and large planar size, has been widely recognized as a potential superior adsorbent because of its high surface area and abundant oxygen-containing functional groups with anionic property [13][14][15][16][17][18].…”

Preparation of graphene-MoS2 hybrid aerogels as multifunctional sorbents for water remediation

“…However, the carbon-based 3D porous networks have limited compatibility and most of them only show affinity to certain category of contaminants [7][8][9][10][11]. This limitation hinders the real industrial wastewater treatment since it normally contains diverse types of pollutants (e.g., heavy metal ions, dyes, oils, and other organic compounds) [12][13][14][15]. Therefore, it is desired to develop new hybrid carbonbased sorbents, i.e., porous carbon networks incorporated with other functional materials to enhance their sorption capabilities and simultaneously absorb multiple types of pollutants from wastewater [16][17][18].…”