Flexible carbon nanofiber sponges for highly efficient and recyclable oil absorption

Ge, Xinxin; Yang, Wei; Wang, Jitong; Long, Donghui; Ling, Licheng; Qiao, Wenming

doi:10.1039/c5ra09021k

Cited by 36 publications

(26 citation statements)

References 45 publications

(95 reference statements)

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“…Over the past few years, carbon‐based oil sorbents have been extended from traditional activated charcoal, carbon microbelts,[12b] and graphite to recently developed nanostructured carbons such as carbon nanoparticles, carbon soot, carbon nanofibers (CNFs), graphene, and CNTs . By direct pyrolysis of certain types of biomass from nature, nanostructured carbon with hydrophobic properties can be easily obtained . Yu et al[15d] prepared an ultralight CNF aerogel through a one‐step pyrolysis of freeze‐dried bacterial cellulose (BC) pellicles ( Figure a).…”

Section: Surface Considerations For Oil Sorbentsmentioning

confidence: 99%

“…Pyrolyzed biomass has been regarded as an effective way to produce low‐cost carbon‐based oil sorbents . Wu et al reported a facile route to produce ultralight, flexible, and fire‐resistant carbon nanofiber (CNF) aerogels by pyrolyzing bacterial cellulose (BC) ( Figure a,g).…”

Section: Carbon‐based Oil Sorbentsmentioning

confidence: 99%

“…The obtained carbon aerogel exhibited flexibility under mechanical compression, and had high adsorption capacity for a variety of oils and organic solvents up to 129 times its own weight. Cellulose‐based waste newspaper (Figure d),[176a] watermelon (Figure e),[176b] winter melon (Figure f),[67e] cellulose,[176c] kapok wadding,[64b] glucose, sugar‐based molecules and polysaccharide,[176e] and alkaline lignin and melamine[176f] have also been used as raw materials to fabricate carbon‐based oil sorbents through the pyrolysis method.…”

Section: Carbon‐based Oil Sorbentsmentioning

confidence: 99%

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Advanced Sorbents for Oil‐Spill Cleanup: Recent Advances and Future Perspectives

et al. 2016

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Oil sorbents play a very important part in the remediation processes of oil spills. To enhance the oil-sorption properties and simplify the oil-recovery process, various advanced oil sorbents and oil-collecting devices based on them have been proposed recently. Here, we firstly discuss the design considerations for the fabrication of oil sorbents and describe recently developed oil sorbents based on modification strategy. Then, recent advances regarding oil sorbents mainly based on carbon materials and swellable oleophilic polymers are also presented. Subsequently, some additional properties are emphasized, which are required by oil sorbents to cope with oil spills under extreme conditions or to facilitate the oil-collection processes. Furthermore, some oil-collection devices based on oil sorbents that have been developed recently are shown. Finally, an outlook and challenges for the next generation of oil-spill-remediation technology based on oil-sorbents materials are given.

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Section: Surface Considerations For Oil Sorbentsmentioning

confidence: 99%

Section: Carbon‐based Oil Sorbentsmentioning

confidence: 99%

Section: Carbon‐based Oil Sorbentsmentioning

confidence: 99%

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Advanced Sorbents for Oil‐Spill Cleanup: Recent Advances and Future Perspectives

et al. 2016

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“…Only very few studies exist that present a template-free synthesis approach. [24][25][26] In this paper, we show a facile synthesis approach in which highly graphitic and highly flexible networks of three dimensionally interconnected, pyrolytic graphite-coated carbon nanotubes, named PyG networks in the following are grown that have a tailorable density and height with short production time.…”

Section: Introductionmentioning

confidence: 99%

Template-free, facile synthesis of core–shell carbon networks

Garlof

Fiedler

2016

Nanocomposites

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In this study, we present a fast and easy, template-free chemical vapour deposition approach to synthesize a highly graphitic network consisting of entangled carbon nanotubes (CNTs) as a core and a pyrolytic graphite (PyG) coating as a shell around the CNTs forming a cohering sponge. The network height and density is tailorable by variation in the process parameters. Here, the height ranges between few micrometers and several millimeters, whereas the density ranges varies from 18 to 47 mg/cm³. In addition, we describe the evolution of the aerogel morphology by increasing synthesis time and conclude that the growth is determined by a simultaneous catalytic growth of CNTs and a pyrolytic deposition of graphite on the CNTs. First studies of electrical and thermal properties of the network and its epoxy composite revealed maximum conductivities of 1.7 ± 0.1 S/m and 0.58 ± 0.13 W/mK, respectively.

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“…By tuning catalyst amount, such CNF gels can exhibit a controllable bulk density of 0.02-0.14 g cm -3 and a high porosity of 92-98%. [117] In the C-CVD method, catalysts are critical to affect the formation and properties of CNF gels. Ni is one of the most The corresponding insets show high-magnification SEM images of both the graphene skeletons and CNF forest.…”

Section: Cvd Techniquementioning

confidence: 99%

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

Chen

Feng

Liang

et al. 2017

Advanced Energy Materials

162

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Therefore, it is necessary to develop highperformance energy storage devices for facilitating the effective utilization of intermittent renewable energy sources. [7][8][9] Among varieties of electrochemical energy storage devices, supercapacitors (known as electrochemical capacitors) [10,11] and some rechargeable batteries (lithium-ion batteries (LIBs), lithiumsulfur (Li-S) batteries, and metal-O 2 batteries) [12][13][14][15] are at the frontier, because they can transport high power and store high energy. Nowadays, they play an indispensable role in our daily life by powering numerous portable electronic devices (e.g., cell phones and laptops), hybrid electric vehicles, and large-scale electrical grids. [16][17][18][19] It is well accepted that the performance of energy storage devices mainly depended on their electrode materials. [20,21] Owing to the advantages of large surface area, light weight, good electrical conductivity, and high thermal/ chemical stability, carbon materials have been considered as the most important electrode materials of supercapacitors and rechargeable batteries [8,20,21] Hence, various nanostructured carbons, such as carbon/graphene quantum dots, [22,23] carbon nanofiber (CNFs), [16,24] carbon nanotubes (CNTs), [13,25] graphene [26][27][28][29][30][31][32] carbon nanosheets, [33,34] 3D carbon nanostructures, [35][36][37] and porous carbon, [38,39] have gained great attention. Among these materials, 3D carbon nanomaterials have some advantages. The interlinked architecture not only shortens transport distances for ions in the well-interconnected wall structure, but also provides a continuous pathway endowing for the fast electron transport. [40] Moreover, the structural interconnectivities guarantee higher electrical conductivity and better mechanical stability. [36,41] Thereby, the design and fabrication of various 3D carbonbased nanostructures, including carbon nanotube networks, graphene gels, graphene foams, and 3D CNFs, have been intensively investigated.Over the past few years, there are many reviews summarizing the progress of fabricating 3D carbon-based nanomaterials. For example, Schneider et al. overviewed the recent advance in the synthesis of 3D arranged carbon nanotube architectures. [42] Li et al. reviewed the carbon-based 3D nanostructures for supercapacitors. [36] Cao and Gui et al. comprehensively reviewed the recent progress in synthesis, properties, and energy applications of CNT sponges, aerogels, and hierarchical composites. [43] The development of high-performance electrochemical energy storage devices is critical for addressing energy crises and environmental pollution.

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Flexible carbon nanofiber sponges for highly efficient and recyclable oil absorption

Abstract: Carbon nanofiber sponges composed of three-dimensional networks have been prepared though chemical vapor deposition. Such sponges exhibit controllable bulk density, admirable mechanical flexibility and high oil absorption capacity.

Cited by 36 publications

References 45 publications

Advanced Sorbents for Oil‐Spill Cleanup: Recent Advances and Future Perspectives

Advanced Sorbents for Oil‐Spill Cleanup: Recent Advances and Future Perspectives

Template-free, facile synthesis of core–shell carbon networks

Macroscopic‐Scale Three‐Dimensional Carbon Nanofiber Architectures for Electrochemical Energy Storage Devices

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