Controlled synthesis of porous Fe3O4-decorated graphene with extraordinary electromagnetic wave absorption properties

Sun, Danping; Zou, Quan; Qian, Guoqiang; Sun, Chen; Jiang, Wei; Li, Fengsheng

doi:10.1016/j.actamat.2013.06.030

Cited by 170 publications

(71 citation statements)

References 34 publications

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“…Carbon nanotubes, graphene monolayers and nanoplatelets of different thickness, nanosized particles of metal oxides and sulfides -e.g., iron (Sun et al, 2013), manganese (Tang et Sun et al, 2013;). Introducing sulfur nanoparticles and polysulfide ions into graphene cell nanostructures makes it possible to eliminate the problem of self-discharge in polysulfide-type chemical current sources .…”

Section: Introductionmentioning

confidence: 99%

A new way of developing nanocomposites based on carbon nanotubes and graphene nanoplatelets

Burakova¹,

Gerasimova²,

Galunin³

et al. 2016

Nanopages

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Abstract. In the present research, phenol-formaldehyde resins were used instead of common surfactants for dispersing carbon nanotubes and graphene nanoplatelets in order to develop new composite materials. The use of such resins makes it possible to increase the concentration of nanoparticles in solution by approximately two orders of magnitude. The presence of reactive groups on the surface of the phenol-formaldehyde-resin-modified carbon nanotubes and graphene nanoplatelets promotes synthesis of a variety of composites. According to the experiments performed herein, the modification of the nanomaterials with the phenol-formaldehyde resin significantly improves their compatibility and provides good water-solubility. While dispersing in water, the aggregates of the carbon nanotubes disappear, giving rise to an ordered structure. Besides, they form stable colloidal solutions at slightly alkaline pH values, but coagulate when decreasing the pH. This effect allows for self-assembly of carbon and composite nanostructures from nanoparticles in solution due to pH adjustment. This enables easy synthesis of hybrid composite materials based on carbon nanotubes, graphene nanoplatelets and phenol-formaldehyde resins.

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Section: Introductionmentioning

confidence: 99%

A new way of developing nanocomposites based on carbon nanotubes and graphene nanoplatelets

Burakova¹,

Gerasimova²,

Galunin³

et al. 2016

Nanopages

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show abstract

“…Freestanding graphene papers also show excellent and specific EMI SE [30][31][32]. Gupta et al [31] demonstrated that MnO 2 decorated graphene nanoribbons (GNRs) in paper form possessed outstanding microwave shielding properties.…”

Section: Electromagnetic Interference (Emi) Shieldingmentioning

confidence: 97%

“…Due to the light weight, resistance to corrosion, flexibility, and processing advantages, electrically conducting composites have become popular to replace conventional metal-based EMI shielding materials [28,29]. Graphene is an excellent choice for high-performance EMI shielding in the form of either sheets [26], papers [30][31][32], polymer-based composites, or coatings [33][34][35][36] because of its high conductivity, saturation velocity, flexibility, and mechanical strength [37].…”

Section: Electromagnetic Interference (Emi) Shieldingmentioning

confidence: 99%

Application of Graphene-Based Transparent Conductors (TCs)

Zheng

Kim

2015

Graphene for Transparent Conductors

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As graphene has several potential advantages over indium tin oxide (ITO) including weight, robustness , flexibility, chemical stability, and cost, many applications, such as touch panels, displays, solar cells, organic light-emitting diode, transistors and other new areas, have been demonstrated [1]. Although the application of graphene for transparent conductors (TCs) is still in its early stage and the performances of some devices presented in this book are in a preoptimized state, the unique functional characteristics can make graphene a strong candidate to replace the currently commercially dominant TC materials [2]. These devices, with their functional, structural, and mechanical requirements, where graphene has been considered to apply are discussed in this chapter. Touch ScreenA touch screen is an electronic visual display that detects the presence and location of a touch [2]. A variety of touch-screen technologies, such as resistive, surface acoustic wave, capacitive, surface capacitance, projected capacitance, has been developed [3]. The most commonly used touch screens are the resistive and capacitive types, which require a sheet resistance of ~ 300-1500 Ω/sq at a transparency of ~ 86-90 % [4]. Graphene has several advantages including flexibility, wear resistance, chemical durability, and low toxicity (Fig. 5.1a-b) compared to the traditional ITO. Based on the successful fabrication of graphene films, with outstanding sheet resistance and transparency, and a large size of tens of centimeters, Bae et al.[5] incorporated them into touch-screen panel devices (Fig. 5.1b). It is revealed that the touch-screen display made from graphene outperformed that of ITO in terms of the applied strain. The former touch screen could handle twice as much strain as conventional ITO-based devices (Fig. 5.1c) [5]. The graphene-based panel resisted up to 6 % strain, which is limited mainly by the silver electrode and not by graphene itself, while the ITO-based touch panel easily broke at just 2-3 % strain.

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“…The wide application of wireless communication terminals, such as laptop, unmanned aerial vehicle and radar, have made people's daily life more convenient and efficient, but at the same time, excessive electromagnetic (EM) radiation also does harm to biological systems, electronic equipment and information safety [1][2][3][4]. The increasing radiation problem has therefore attracted much attention by global researchers, and great efforts have been made to eliminate EM pollution.…”

Section: Introductionmentioning

confidence: 99%

Controllable synthesis of porous C x N y nanofibers with enhanced electromagnetic wave absorption property

Zhang

Zhou

Xiao

et al. 2017

Ceramics International

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Controlled synthesis of porous Fe3O4-decorated graphene with extraordinary electromagnetic wave absorption properties

Cited by 170 publications

References 34 publications

A new way of developing nanocomposites based on carbon nanotubes and graphene nanoplatelets

A new way of developing nanocomposites based on carbon nanotubes and graphene nanoplatelets

Application of Graphene-Based Transparent Conductors (TCs)

Controllable synthesis of porous C x N y nanofibers with enhanced electromagnetic wave absorption property

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