Elastic carbon foam via direct carbonization of polymer foam for flexible electrodes and organic chemical absorption

Chen, Shouhui; He, Guowei; Hu, Huan; Jin, Shaoqin; Zhou, Yan; He, Yunyun; He, Shuijian; Zhao, Feng; Hou, Haoqing

doi:10.1039/c3ee41436a

Cited by 289 publications

(190 citation statements)

References 19 publications

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“…Besides the natural abundant carbonaceous precursors, various other synthetic 3D architectures were also carbonized through pyrolysis to achieve carbon-based 3D absorbents, such as cellulose aerogels, polymeric aerogels, commercial polymer sponges, etc. [126][127][128][129][130][131][132][133][134][135] …”

Section: Carbon-based 3d Absorbentsmentioning

confidence: 99%

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

Cheng

Fane

et al. 2016

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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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Section: Carbon-based 3d Absorbentsmentioning

confidence: 99%

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

Cheng

Fane

et al. 2016

Small

773

333

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“…[2,3] Amore efficient technique is the physicalabsorption of oils from water because of its simplicity,m ild operation conditions, high effectiveness, and relatively low cost;t hus much attentionh as been paidt o the development of advanced materials for the absorption of oil from water. [4,5] Hydrophobicity,e specially superhydrophobicity,i sd esirable and crucial for an oil absorbent, since it thus absorbs oils selectively while repelling water.C onventional oil absorbents have been used, with most of them presenting some shortcomings. For example, some absorbents derived from natural materials show limited oil loading since they likely absorb not only oil but also water; [6] exfoliated graphitec an absorb oil with high capacityb ut it is inconvenient to handlee xfoliated graphitei n polluted areas, due to its granular state.…”

Section: Introductionmentioning

confidence: 99%

A Superhydrophobic Sponge with Hierarchical Structure as an Efficient and Recyclable Oil Absorbent

et al. 2015

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Oil/water separation is a worldwide challenge due to frequent oil spillages, and high‐performance absorbents are in high demand. In this work, a superhydrophobic sponge was fabricated by the polymerization of aniline, with subsequent simple immersion in n‐dodecylthiol. The polyaniline (PANI) constructed a nanoscale rough surface on the three‐dimension (3D) network of melamine sponge while n‐dodecylthiol reduced surface energy, thus lead to the superhydrophobicity. This superhydrophobic sponge could absorb a broad spectrum of oil and organics efficiently, with the highest 122 times of its own weight absorption capacity. Owing to the strong mechanical elasticity inherited from the pristine melamine sponge and stable adhesion of PANI, this sponge exhibited good recyclability through squeezing. More importantly, the fabrication procedure is facile, low‐cost and easily scalable. Thus, this superhydrophobic sponge is highly promising for absorption oil from water.

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“…6 There are many ways to introduce porosity into carbons via so 7 and hard 8 templating or by carbonization of a porous organic precursor such as a gel 9 or foam. 10 However, it is difficult to control porosity over multiple length-scales via any one of these routes. Multimodal porosity is extremely desirable, particularly in catalytic materials, to maximize surface area while also optimizing uid accessibility and ow.…”

Section: Introductionmentioning

confidence: 99%

Doped-carbon electrocatalysts with trimodal porosity from a homogeneous polypeptide gel

et al. 2013

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One of the biggest challenges for materials science is to design facile routes to structurally complex materials, which is particularly important for global applications such as fuel cells. Doped nanostructured carbons are targeted as noble metal-free electrocatalysts for this purpose. Their intended widespread use, however, necessitates simple and robust preparation methods that do not compromise on material performance.Here, we demonstrate a versatile one-pot synthesis of nitrogen-doped carbons that exploits the templating ability of biological polymers. Starting with just metal nitrates and gelatin, multiphase C/Fe 3 C/ MgO nanomaterials are formed, which are then etched to produce active carbon electrocatalysts with accessible trimodal porosity. These show remarkable performance in the oxygen reduction reaction -a key process in proton exchange membrane fuel cells. The activity is comparable to commercial platinum catalysts and shows improved stability with reduced crossover effects. This simple method offers a new route to widely applicable porous multicomponent nanocomposites.

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Elastic carbon foam via direct carbonization of polymer foam for flexible electrodes and organic chemical absorption

Cited by 289 publications

References 19 publications

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

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

A Superhydrophobic Sponge with Hierarchical Structure as an Efficient and Recyclable Oil Absorbent

Doped-carbon electrocatalysts with trimodal porosity from a homogeneous polypeptide gel

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