Green synthesis of carbon nanotube–graphene hybrid aerogels and their use as versatile agents for water purification

Sui, Zhuyin; Meng, Qinghan; Zhang, Xuetong; Ma, Rui; Cao, Bing

doi:10.1039/c2jm00055e

Cited by 510 publications

(273 citation statements)

References 34 publications

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“…A number of methods, such as self-gelation and chemical vapour deposition (CVD) over a porous catalyst have recently been developed to fabricate highly porous graphene cellular monoliths [5][6][7][8][9][10][11][12] . However, as with most of the existing porous carbon materials 13 , the resulting graphene monoliths are generally brittle and have small recoverable deformation before failure unless they are infiltrated with an elastomeric polymer 5 or grown on pre-formed carbon nanotube aerogels 14 .…”

mentioning

confidence: 99%

Biomimetic superelastic graphene-based cellular monoliths

et al. 2012

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Many applications proposed for graphene require multiple sheets be assembled into a monolithic structure. The ability to maintain structural integrity upon large deformation is essential to ensure a macroscopic material which functions reliably. However, it has remained a great challenge to achieve high elasticity in three-dimensional graphene networks. Here we report that the marriage of graphene chemistry with ice physics can lead to the formation of ultralight and superelastic graphene-based cellular monoliths. Mimicking the hierarchical structure of natural cork, the resulting materials can sustain their structural integrity under a load of 450,000 times their own weight and can rapidly recover from 480% compression. The unique biomimetic hierarchical structure also provides this new class of elastomers with exceptionally high energy absorption capability and good electrical conductivity. The successful synthesis of such fascinating materials paves the way to explore the application of graphene in a self-supporting, structurally adaptive and 3D macroscopic form.

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confidence: 99%

Biomimetic superelastic graphene-based cellular monoliths

et al. 2012

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“…In a report by Sui et al they showed that conductive graphene-CNT aerogels can be synthesized by the simple ascorbic acid reduction of a GO and CNT dispersion. 55 This material was then employed effectively in water purication, showing an efficient desalination capacity (633.3 mg g À1 ) and an impressive heavy metal (Pb 2+ , Ag + , Hg 2+ , and Cu 2+ ) removal capacity.…”

Section: Water Remediation By Adsorptionmentioning

confidence: 99%

Environmental applications using graphene composites: water remediation and gas adsorption

et al. 2013

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This review deals with wide-ranging environmental studies of graphene-based materials on the adsorption of hazardous materials and photocatalytic degradation of pollutants for water remediation and the physisorption, chemisorption, reactive adsorption, and separation for gas storage. The environmental and biological toxicity of graphene, which is an important issue if graphene composites are to be applied in environmental remediation, is also addressed.

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“…In the work by Sui et al, 103 GO sheets and MWCNTs were sonicated together. Ascorbic acid was used as the chemical reducing agent to induce gelation and the wet gels were supercritically dried with CO 2 .…”

Section: Cnt/gasmentioning

confidence: 99%

Carbon aerogel evolution: Allotrope, graphene-inspired, and 3D-printed aerogels

et al. 2017

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Carbon aerogels (CAs) are a unique class of high surface area materials derived by sol-gel chemistry. Their high mass-specific surface area and electrical conductivity, environmental compatibility, and chemical inertness make them very promising materials for many applications, such as energy storage, catalysis, sorbents, and desalination. Since the first CAs were made via pyrolysis of resorcinol-formaldehyde (RF)-based organic aerogels in the late 1980s, the field has really grown. Recently, in addition to RF-derived amorphous CAs, several other carbon allotropes have been realized in aerogel form: carbon nanotubes (CNTs), graphene, graphite, and diamond. Furthermore, the popularity of graphene aerogels has inspired research into aerogels made of a host of graphene analog materials (e.g., boron nitride, transition metal dichalcogenides, etc.), with potential for an even wider array of applications. Finally, the development of threedimensional-printed aerogels provides the potential for CAs to have an even broader impact on energy-related technologies. Here, we will present recent work covering the novel synthesis of

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Green synthesis of carbon nanotube–graphene hybrid aerogels and their use as versatile agents for water purification

Cited by 510 publications

References 34 publications

Biomimetic superelastic graphene-based cellular monoliths

Biomimetic superelastic graphene-based cellular monoliths

Environmental applications using graphene composites: water remediation and gas adsorption

Carbon aerogel evolution: Allotrope, graphene-inspired, and 3D-printed aerogels

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