Aerogels based on carbon nanomaterials

Araby, Sherif; Qiu, Aidong; Wang, Ruoyu; Zhao, Zhidan; Wang, Chunhui; Ma, Jun

doi:10.1007/s10853-016-0141-z

Cited by 92 publications

(40 citation statements)

References 200 publications

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“…As ubsequent microwave treatment induced the formation of the graphene gel that could be transformed into an aerogel via freeze-drying. [178][179][180][181] Further studies on graphene aerogels focused on the investigation of .…”

Section: Gels From Carbon Nanostructuresmentioning

confidence: 99%

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Modern Inorganic Aerogels

et al. 2017

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Essentially, the term aerogel describes a special geometric structure of matter. It is neither limited to any material nor to any synthesis procedure. Hence, the possible variety of materials and therefore the multitude of their applications are almost unbounded. In fact, the same applies for nanoparticles. These are also just defined by their geometrical properties. In the past few decades nano-sized materials have been intensively studied and possible applications appeared in nearly all areas of natural sciences. To date a large variety of metal, semiconductor, oxide, and other nanoparticles are available from colloidal synthesis. However, for many applications of these materials an assembly into macroscopic structures is needed. Here we present a comprehensive picture of the developments that enabled the fusion of the colloidal nanoparticle and the aerogel world. This became possible by the controlled destabilization of pre-formed nanoparticles, which leads to their assembly into three-dimensional macroscopic networks. This revolutionary approach makes it possible to use precisely controlled nanoparticles as building blocks for macroscopic porous structures with programmable properties.

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Section: Gels From Carbon Nanostructuresmentioning

confidence: 99%

“…[175][176][177] Thei nterested reader can find am ore detailed overview on aerogels made from CNTs and graphene elsewhere. [178][179][180][181]…”

Section: Gels From Carbon Nanostructuresmentioning

confidence: 99%

Modern Inorganic Aerogels

et al. 2017

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“…Over the last few years, carbonaceous materials such as carbon nanotubes [18], carbon black [19], expanded graphite [10,20], graphene aerogels [21,22], reduced graphene oxide (rGO) [23], and carbon nanofibers [24] have emerged as materials of choice for oil spill clean-up owing to their excellent non-wettability towards water. Among all, graphene-based sorbents have attracted significant attention for oil-water separation due to their ease of fabrication, superhydrophobicity, and high surface area, along with excellent chemical, thermal, and mechanical stability [25,26].…”

Section: Introductionmentioning

confidence: 99%

Reduced graphene oxide-coated cotton as an efficient absorbent in oil-water separation

Dashairya

Rout

Saha

2017

Adv Compos Hybrid Mater

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The present work describes the fabrication of superhydrophobic and superoleophilic reduced graphene oxide-coated cotton (rGO@cotton) by a facile one-step hydrothermal used method for oil-water separation. Results from X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and field emission scanning electron microscopy (FESEM) analysis show the formation of a composite structure with the presence of an ultrathin coating of rGO on the cotton fibers. The contact angle (CA) between a static water droplet and the rGO@cotton surface in air was measured~162.9°, which suggests the formation of a superhydrophobic surface on the synthesized product. Moreover, the rGO@cotton showed excellent absorption capacity for oils where 1 g of rGO@cotton was able to remove~30-40 g of various oils in the first cycle from oil-water mixtures. The flexible rGO@cotton was reusable and demonstrated oil retention up to~35-50% at the tenth cycle using simple sorption-mechanical squeezing test. Overall, the present work identifies that the rGO@cotton is an efficient absorbent for effective separation of oil from oil-water mixtures.

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“…Im gleichen Jahr wurde von einer anderen Gruppe eine weitere Methode zur Herstellung von Graphenaerogelen vorgestellt. [178][179][180][181] Eine anschließende Mikrowellenbehandlung induzierte die Bildung des Graphengels,das mittels Gefriertrocknung in ein Aerogel umgewandelt werden konnte.D ieses Material zeigt eine hervorragende reversible Komprimierbarkeit, die eine vollständige Wiederherstellung nach einer 90-prozentigen Komprimierung ermçglicht.…”

Section: Gele Aus Kohlenstoffnanostrukturenunclassified

“…[175][176][177] Der interessierte Leser kann an anderer Stelle eine detaillierte Übersicht über Aerogele aus CNTs und Graphen finden. [178][179][180][181]…”

Section: Gele Aus Kohlenstoffnanostrukturenunclassified

Moderne Anorganische Aerogele

et al. 2017

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Der Begriff Aerogel beschreibt im Wesentlichen eine besondere geometrische Struktur der Materie, die materialunabhängig ist und keinem speziellen Syntheseverfahren unterliegt. Grundsätzlich können daher Aerogele aus unzähligen Materialien bestehen, wodurch die Anwendungsmöglichkeiten nahezu unbegrenzt sind. Dasselbe trifft auf Nanopartikel zu. Diese werden ebenso durch ihre geometrischen Eigenschaften definiert. In den letzten Jahrzehnten standen daher nanoskalige Materialien im Fokus der Forschung, und es entwickelten sich mögliche Anwendungen in vielen naturwissenschaftlichen Bereichen. Heute ist eine Vielzahl an Metall‐, Halbleiter‐, Oxid‐ und anderen Nanopartikeln durch kolloidale Synthesen zugänglich. Dennoch ist es für eine Anwendung oft notwendig, dass diese Materialien zuvor in makroskopische Strukturen angeordnet werden. Dieser Aufsatz gibt eine ausführliche Übersicht über die Entwicklung, die die Welt der kolloidalen Nanopartikel und der Aerogele miteinander vereint. Ermöglicht wurde dies durch die kontrollierte Destabilisierung der vorab gebildeten Nanopartikel, die zu einer Anordnung der Nanopartikel zu einem dreidimensionalen, makroskopischen Netzwerk führt. Dieses revolutionäre Konzept verleiht die Möglichkeit, präzise kontrollierte Nanopartikel als Grundbausteine für makroskopische, poröse Strukturen mit einstellbaren Eigenschaften zu nutzen.

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Aerogels based on carbon nanomaterials

Cited by 92 publications

References 200 publications

Modern Inorganic Aerogels

Modern Inorganic Aerogels

Reduced graphene oxide-coated cotton as an efficient absorbent in oil-water separation

Moderne Anorganische Aerogele

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