Hydrophobic carbon nanotubes for removal of oils and organics from water

Sun, Hanxue; La, Peiqing; Zhu, Zhaoqi; Liang, Weidong; Yang, Baoping; Zhao, Xiuge; Pei, Chunjuan; Liu, An

doi:10.1007/s10853-014-8387-9

Cited by 42 publications

(16 citation statements)

References 49 publications

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“…times as much as its own weight, which is even higher than or comparable to many carbon materials absorbents, such as carbon nanotubes-based sorbents [11,70,71], grapheme-based absorbents [11,72,73], carbon aerogel [10,74,75], although it is still lower than some absorbent materials [76][77][78]. These are detailedly summaried in Table S3.…”

Section: Resultsmentioning

confidence: 96%

A versatile biomass derived carbon material for oxygen reduction reaction, supercapacitors and oil/water separation

et al. 2017

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Directly pyrolyzing biowastes has attracted intensive interest, probably because this economical and facile method provides an efficient and versatile platform for synthesizing functional carbons. This study describes the synthesis of different functional carbons from poplar catkins via different processes for multipurpose applications. Nitrogen and oxygen dual-doped carbon (NODC-800) derived from catkins delivers superior electrochemical characteristics as oxygen reduction reaction (ORR) catalyst in alkaline fuel cell to that of commercial Pt/C in terms of catalytic activity, stability, resistance to methanol cross-over and CO poisoning. In addition, NODC-800 exhibits a high capacity (~ 251 F g-1 at 0.5 A g-1) with nearly 100% retention rate after 1000 cycles as supercapacitors electrodes. An oleophylic carbon aerogel derived from catkins is proven to be superoleophilic and porous enough to "wet" with oils and organic liquids and repel water completely to achieve oil/water separation. This work is a successful case to take full advantage of raw materials from nature via multiple technologies to achieve energy sustainable development and protect environmental from oils and organic solvents spill.

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Section: Resultsmentioning

confidence: 96%

A versatile biomass derived carbon material for oxygen reduction reaction, supercapacitors and oil/water separation

et al. 2017

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“…The intrinsic hydrophobicity of carbon materials enables them to selectively absorb oil from oil/water mixtures. Carbon nanotube (CNT)‐based aerogels/sponges have proven their efficiency as superabsorbents for oil/water separation . For example, Gui et al fabricated CNT sponges that could selectively remove oil floating on water .…”

Section: Materials For Oil/water Separation Based On Absorptionmentioning

confidence: 99%

Recent Development of Advanced Materials with Special Wettability for Selective Oil/Water Separation

Cheng

Fane

et al. 2016

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767

333

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The increasing number of oil spill accidents have a catastrophic impact on our aquatic environment. Recently, special wettable materials used for the oil/water separation have received significant research attention. Due to their opposing affinities towards water and oil, i.e., hydrophobic and oleophilic, or hydrophilic and oleophobic, such materials can be used to remove only one phase from the oil/water mixture, and simultaneously repel the other phase, thus achieving selective oil/water separation. Moreover, the synergistic effect between the surface chemistry and surface architecture can further promote the superwetting behavior, resulting in the improved separation efficiency. Here, recently developed materials with special wettability for selective oil/water separation are summarized and discussed. These materials can be categorized based on their oil/water separating mechanisms, i.e., filtration and absorption. In each section, representative studies will be highlighted, with emphasis on the materials wetting properties and innovative aspects. Finally, challenges and future research directions in this emerging and promising research field will be briefly described.

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“…3 In fact, there are various types of adsorbent materials, including natural substances, 4 polymers and resins, 5 silica and nanocomposites, 6,7 etc. Amongst them, carbon based adsorbents, such as active carbon, 8 carbon-nanotubes (CNTs)/CNTs sponges, 9,10 and graphene aerogels/sponges, 2,11 emerge as the most promising candidates and have been widely investigated in oil-water separation, organic solvent adsorption and removal of heavy metals. For example, spongy graphene demonstrated effective adsorption for petroleum products, fats and ketones, with the largest capacity up to 86 times of the pristine weight.…”

Section: Introductionmentioning

confidence: 99%

“…12 The synthesized p-phenylenediamine modied CNTs exhibited a water contact angle of 140.8 , and could uptake oil at 3 times of its own weight. 10 However, sophisticated procedures, hazardous chemicals and expensive precursors are necessary to synthesize such adsorbents, which greatly hampers their scalable production for potential applications. 2 In addition, the aforementioned carbon based adsorbents are usually prone to collapse in practical adsorption due to its fragile nature, leading to a low efficiency in adsorption and a high risk to introduce extra pollution to the environment.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of a plasma carbon aerosol coated sponge for recyclable and efficient separation and adsorption

Yang

et al. 2017

RSC Adv.

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Hydrophobic carbon nanotubes for removal of oils and organics from water

Cited by 42 publications

References 49 publications

A versatile biomass derived carbon material for oxygen reduction reaction, supercapacitors and oil/water separation

A versatile biomass derived carbon material for oxygen reduction reaction, supercapacitors and oil/water separation

Recent Development of Advanced Materials with Special Wettability for Selective Oil/Water Separation

Synthesis and characterization of a plasma carbon aerosol coated sponge for recyclable and efficient separation and adsorption

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