Environmental applications using graphene composites: water remediation and gas adsorption

Abstract

This review deals with wide-ranging environmental studies of graphene-based materials on the adsorption of hazardous materials and photocatalytic degradation of pollutants for water remediation and the physisorption, chemisorption, reactive adsorption, and separation for gas storage. The environmental and biological toxicity of graphene, which is an important issue if graphene composites are to be applied in environmental remediation, is also addressed.

RhB Adsorption Performance of Magnetic Adsorbent Fe3O4/RGO Composite and Its Regeneration through A Fenton-like Reaction

“…Moreover, the oxygen-containing groups and surface amphiphilicity can be tuned by synthesizing modified GO or reduced GO (RGO) for specific adsorption objectives [13,14]. On the other hand, multifunctional graphene-related nanocomposites would bring additional properties to graphene and become a focused field of graphene materials [11,15,16]. Among them, incorporation of magnetic nanoparticles with graphene has attracted tremendous attention.…”

“…Compared with them, graphene and graphene oxide (GO) nanosheets, a type of two-dimensional nanomaterial with a single layer framework of six-member carbon rings, also show strong adsorption ability for both organic or inorganic pollutants because of their large theoretical specific surface area of 2630 m 2 /g and special π-π conjugate planar geometric structure [8][9][10][11][12]. Moreover, the oxygen-containing groups and surface amphiphilicity can be tuned by synthesizing modified GO or reduced GO (RGO) for specific adsorption objectives [13,14].…”

Highly Efficient Adsorption of Copper Ions by a PVP-Reduced Graphene Oxide Based on a New Adsorptions Mechanism

“…Graphene was considered as a good nanomaterial for removing metal ions due to its high surface area, an-tibacterial property and lower cytotoxicity [18][19][20][21][22][23][24][25][26]. In recent years, graphene nanosheets (GNSs) were fabricated by the vacuum-promoted exfoliation method at low-temperature and used to adsorb Pb ions and the adsorption capacity of about 40 mg/g was obtained [24].…”

Nanotoxicity of Rare Earth Metal Oxide Anchored Graphene Nanohybrid: A Facile Synthesis and In Vitro Cellular Response Studies

“…Till date, multiple recent researchers reported the biological toxic response of graphene and its derivatives in biomedical applications both in vitro and in vivo. [26][27][28] Moreover functionalization of the metal oxide NPs have also been studied which includes proteins, 29 carbohydrates, 30 DNA, 31 polymers 32 to modulate the circulation time which in turn in°uence the in vitro biological responsive behavior of living systems. Recently, nanoceria has also been extensively explored owing its reactive oxygen species (ROS) scavenging ability to various human endothelial cell lines.…”