Fast growth of carbon nanotubes using a microwave oven

Bajpai, Reeti; Wagner, H. Daniel

doi:10.1016/j.carbon.2014.10.077

Cited by 85 publications

(62 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The peaks at 2θ = 20.94° (110) and 23.98° (200) in the diffraction pattern of PPy-coated WKF appear to have increased in intensity as the peaks of WKF merged with those of PPy in the diffractograms. The appearance of small new peaks at 2θ = 41.63° ((100) plane of C), 43.13° ((111) plane of Fe 3 C), 44.83° ((110) plane of Fe), 55.81° ((004) plane of CNT), and 76.61°((110) plane of CNT) in the spectrum of Fe-CNT grown PPy-coated WKF, in combination with the increased intensity of the peaks at 2θ = 20.94°and 23.98° confirmed the growth of Fe-CNTs on the surface of PPy-coated WKF25.…”

Section: Resultsmentioning

confidence: 69%

“…The C atoms remained dispersed across the Fe nanoparticles above the substrate. Graphitic walls, which later commenced the CNT growth, formed through arrangement of C atoms that precipitated from the Fe nanoparticles25.…”

Section: Resultsmentioning

confidence: 99%

“…The Fe nanoparticles that might have existed in the fused state at the beginning were consumed by the nanotubes due to the capillary effect promoted by their growth from the graphitic walls26. There are several parameters accountable for encapsulation of Fe nanoparticles inside the CNTs that comprises of: the viscosity of the fused Fe nanoparticles; the frictional force between the internal walls of a CNT and the entrapped Fe nanoparticles; capillary force of the nanotubes during their growth; the tension between different forces; and pressure on the Fe nanoparticles due to the growth of the nanotubes25. In some cases, the fused Fe atom develop into elongated structure within the nanotubes instead of forming smaller nanoparticles (Fig.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Microwave-synthesized freestanding iron-carbon nanotubes on polyester composites of woven Kevlar fibre and silver nanoparticle-decorated graphene

Hazarika

Deka

Kim

et al. 2017

Sci Rep

View full text Add to dashboard Cite

We synthesized Ag nanoparticle-decorated multilayered graphene nanosheets (Ag-graphene) from graphite nanoplatelets and silver nitrate through 90–100 s of microwave exposure, without the use of any mineral acids or harsh reducing agents. Fe nanoparticle-decorated carbon nanotubes (Fe-CNTs) were grown on polypyrrole (PPy) deposited on woven Kevlar fibre (WKF), using ferrocene as a catalyst, under microwave irradiation. Fe-CNTs grown on WKF and Ag-graphene dispersed in polyester resin (PES) were combined to fabricate Ag-graphene/Fe-CNT/PPy-coated WKF/PES composites by vacuum-assisted resin transfer moulding. The combined effect of Fe-CNTs and Ag-graphene in the resulting composites resulted in a remarkable enhancement of tensile properties (a 192.56% increase in strength and 100.64% increase in modulus) as well as impact resistance (a 116.33% increase). The electrical conductivity significantly increased for Ag-graphene/Fe-CNT/PPy-coated WKF/PES composites. The effectiveness of electromagnetic interference shielding, which relies strongly on the Ag-graphene content in the composites, was 25 times higher in Ag-graphene/Fe-CNT/PPy-coated WKF/PES than in neat WKF/PES composites. The current work offers a novel route for fabricating highly promising, cost effective WKF/PES composites through microwave-assisted synthesis of Fe-CNTs and Ag-graphene.

show abstract

Section: Resultsmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Microwave-synthesized freestanding iron-carbon nanotubes on polyester composites of woven Kevlar fibre and silver nanoparticle-decorated graphene

Hazarika

Deka

Kim

et al. 2017

Sci Rep

View full text Add to dashboard Cite

show abstract

“…With CVD-CNTs, the nanotubes grow up from the base of the CF and are strongly attached to the CF base, while sized CNTs have a physical attachment to the CF. Although Bajpai and Wagner mentioned that the growth of CNT was promoted by the carbon fiber, they synthesized CNT on carbon fiber within 5 s without reporting any degradation of the carbon fiber at such a high temperature [52]. Growing CNTs on CFs using microwave irradiation is an exciting new approach to improve the electrochemical and mechanical properties as it is cost-effective and time saving process.…”

Section: Electrode Developmentmentioning

confidence: 99%

Recent development and challenges of multifunctional structural supercapacitors for automotive industries

Deka

Hazarika

Kim

et al. 2017

Int. J. Energy Res.

View full text Add to dashboard Cite

Summary In the last decades, fuel scarcity and increasing pollution level pave the way for an extensive interest in alternatives to petroleum‐based fuels such as biodiesel, solar cells, lithium ion batteries, and supercapacitors. Among them, structural supercapacitors have been considered as promising candidates for automotive industries in present time. Herein, the use of carbon fiber‐based supercapacitors in automotive applications is reviewed. Carbon fiber is an excellent candidate for vehicle body applications, and its composites could be widely used in the development of supercapacitors that could provide both structural and energy storage functions. Different surface modification processes of the carbon fiber electrode to enhance the electrochemical as well as mechanical performances are discussed. The advantages of the glass fiber separator and its comparison with other types of dielectric media have been incorporated. The synthesis procedures of the multifunctional solid polymer electrolyte and its significance have been also elaborated. The fabrication process, component selection, limitations, and future challenges of these supercapacitors are briefly assimilated in this review. Copyright © 2017 John Wiley & Sons, Ltd.

show abstract

“…Incorporation of microwave energy in processing system leads to many technical benefits including reduction in REVIEW WILEYONLINELIBRARY.COM/APP processing time, energy and cost savings, improved product quality, and improving the ecofriendliness of the procedure. 115,116 Thus, microwave technologies have already been explored by many researchers toward the synthesis of CNTs using traditional carbon sources. [117][118][119] However, very few researchers have applied microwave heating sources for the synthesis of CNTs using vegetable oil precursors.…”

Section: Vegetable Oilsmentioning

confidence: 99%

Carbon nanotubes from renewable feedstocks: A move toward sustainable nanofabrication

Vivekanandhan

Schreiber

Muthuramkumar³

et al. 2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

A recent development in the manufacturing of carbon nanotubes is the usage of renewable feedstocks as a carbon source. This new development is receiving much support and is a source of excitement among the global research communities due to the positive environmental impacts, reduced carbon footprints, and economic benefits. Various types of renewable feedstocks such as vegetable oils, plant derivatives, and other types of biomasses have been used for the green synthesis of carbon nanotubes by employing conventional fabrication techniques. As the global demand increases for green manufacturing, efforts to synthesize carbon nanotubes from renewable resources are receiving immense attention while also strengthening the concept of biorefinery. This also enables the efficient use of resources as well as improved waste management. The present review summarizes the recent developments and current status of the synthesis of carbon nanotubes using renewable feedstocks along with technical discussions, opportunities for novel precursors, and future directions.

show abstract

Fast growth of carbon nanotubes using a microwave oven

Cited by 85 publications

References 42 publications

Microwave-synthesized freestanding iron-carbon nanotubes on polyester composites of woven Kevlar fibre and silver nanoparticle-decorated graphene

Microwave-synthesized freestanding iron-carbon nanotubes on polyester composites of woven Kevlar fibre and silver nanoparticle-decorated graphene

Recent development and challenges of multifunctional structural supercapacitors for automotive industries

Carbon nanotubes from renewable feedstocks: A move toward sustainable nanofabrication

Contact Info

Product

Resources

About