A novel robust adsorbent for efficient oil/water separation: Magnetic carbon nanospheres/graphene composite aerogel

Kang, Weiwei; Cui, Yan; Qin, Lei; Yang, Yongzhen; Zhao, Zongbin; Wang, Xuzhen; Liu, Xuguang

doi:10.1016/j.jhazmat.2020.122499

Cited by 107 publications

(28 citation statements)

References 76 publications

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“…However, the over stacking of graphene oxide nanosheets (GO) results in a poor recyclability and low adsorption capacity. Kang, Cui [ 51 ] fabricated nitrogen-doped magnetic carbon nanospheres/graphene composite aerogels (MCNS/NGA) under weakly alkaline conditions via a one-step hydrothermal in situ electrostatic self-assembling strategy. The aerogels synthesized by the authors had super-elasticity, low density, high specific surface area, and good magnetic properties.…”

Section: Graphene-based Membranes In Oil/water Separationmentioning

confidence: 99%

“…Hence, the aerogels exhibited high adsorption capacity in the range of 187 g g −1 to 537 g g −1 towards various oils and organic solvents, surpassing most of the reported materials to date. Thus, the MCNS/NGA synthesized in this study are promising candidates in oil/water separation processes [ 51 ]. Cleaning up of crude-oil spills is considered a major environmental remediation issue and urges the fabrication of sorbents with high and stable hydrophobic and oleophilic properties.…”

Section: Graphene-based Membranes In Oil/water Separationmentioning

confidence: 99%

“…Graphene [ 49 ] has the basic structural element of carbon allotropes, including graphite, fullerenes, and carbon nanotubes [ 50 ]. Graphene has a single layer of carbon atoms arranged in one plane [ 51 ]. The structure of graphene is a single planar sheet of sp 2 carbon–carbon bonded atoms that are densely packed into a honeycomb crystal-like lattice [ 52 ].…”

Section: Introductionmentioning

confidence: 99%

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Recent Developments and Advancements in Graphene-Based Technologies for Oil Spill Cleanup and Oil–Water Separation Processes

et al. 2021

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The vast demand for petroleum industry products led to the increased production of oily wastewaters and has led to many possible separation technologies. In addition to production-related oily wastewater, direct oil spills are associated with detrimental effects on the local ecosystems. Accordingly, this review paper aims to tackle the oil spill cleanup issue as well as water separation by providing a wide range of graphene-based technologies. These include graphene-based membranes; graphene sponges; graphene-decorated meshes; graphene hydrogels; graphene aerogels; graphene foam; and graphene-coated cotton. Sponges and aerogels modified by graphene and reduced graphene oxide demonstrated effective oil water separation owing to their superhydrophobic/superoleophilic properties. In addition, oil particles are intercepted while allowing water molecules to penetrate the graphene-oxide-coated metal meshes and membranes thanks to their superhydrophilic/underwater superoleophobic properties. Finally, we offer future perspectives on oil water separation that are hindering the advancements of such technologies and their large-scale applications.

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Section: Graphene-based Membranes In Oil/water Separationmentioning

confidence: 99%

Section: Graphene-based Membranes In Oil/water Separationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Recent Developments and Advancements in Graphene-Based Technologies for Oil Spill Cleanup and Oil–Water Separation Processes

et al. 2021

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“…Kang et al, fabricated magnetic carbon nanosphere/nitrogen doped graphene aerogel with a one-step hydrothermal in situ electrostatic selfassembling method under weakly alkaline (Figure 13F). [270] Liu et al, fabricated a nonflammable and magnetic sponge through surface-initiated atom transfer radical polymerization. Owing to the synergistic flame resistance of the MF substrate and PDMS, the fabricated PDMS-Fe 3 O 4 @MF sponge displayed robust mechanical durability and appropriate magnetic collection (Figure 13G).…”

Section: Strategies For Sorbent Collection With Magnetic Responsementioning

confidence: 99%

A Role for Newly Developed Sorbents in Remediating Large‐Scale Oil Spills: Reviewing Recent Advances and Beyond

Kim

Zhang

Chung

et al. 2021

Advanced Sustainable Systems

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The conservation of ocean and freshwater have been crucial issues over the past decades, and oil/water separation is a well‐known technology to restore polluted water systems. In the meantime, oil sorbents serve as a promising means of achieving water conservation to recover from oil spills, which require a multi‐factorial approach to review high selectivity, capacity, and rate of oil recovery. However, reusability is a critical component to consider in incidents with large‐scale spills. With the development of sorbent technology, some studies have progressed to explore surface engineering and material design for high oil sorption capacity and durability. Thus, this systemic review, a summary of sorbent developments, serves as a guide to understanding practical applications that can apply to large‐scale oil spills and recognize remaining issues. In this review, the oil weathering process and oil sorption mechanisms in relation to the characteristics of target pollutants are introduced. Then, this comprehensive review focuses on materials in advanced sorbents. These materials have properties including, aligned channels for fast sorption, self‐heating capabilities for viscous oil cleanup, and magnetic‐responsiveness to enhance a collection of final products. The perspective and challenges for the next generation of oil spills remediation technology‐based oil sorbents materials are finally presented in the last section.

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“…In recent years, graphene-based sponges, graphene gels, graphene/carbon nanotube composites and graphene-based separation membranes have been reported more and more in the field of adsorbent and oil-water separation. The above materials not only have a large oil absorption capacity, but also exhibit excellent recycling characteristics [179][180][181][182][183].…”

Section: Oily Wastewater Treatmentmentioning

confidence: 99%

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Ke-jian

Tang

et al. 2020

Nanomaterials

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Graphene and its derivatives, with their unique two-dimensional structures and excellent physical and chemical properties, have been an international research hotspot both in the research community and industry. However, in application-oriented research in the oil and gas industry they have only drawn attention in the past several years. Their excellent optical, electrical, thermal and mechanical performance make them great candidates for use in oil and gas exploration, drilling, production, and transportation. Combined with the actual requirements for well working fluids, chemical enhanced oil recovery, heavy oil recovery, profile control and water shutoff, tracers, oily wastewater treatment, pipeline corrosion prevention treatment, and tools and apparatus, etc., this paper introduces the behavior in water and toxicity to organisms of graphene and its derivatives in detail, and comprehensively reviews the research progress of graphene materials in the upstream oil and gas industry. Based on this, suggestions were put forward for the future research. This work is useful to the in-depth mechanism research and application scope broadening research in the upstream oil and gas industry.

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A novel robust adsorbent for efficient oil/water separation: Magnetic carbon nanospheres/graphene composite aerogel

Cited by 107 publications

References 76 publications

Recent Developments and Advancements in Graphene-Based Technologies for Oil Spill Cleanup and Oil–Water Separation Processes

Recent Developments and Advancements in Graphene-Based Technologies for Oil Spill Cleanup and Oil–Water Separation Processes

A Role for Newly Developed Sorbents in Remediating Large‐Scale Oil Spills: Reviewing Recent Advances and Beyond

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

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