Synthesis of heterostructured helical carbon nanotubes by iron-catalyzed ethanol decomposition

Zhang, Yong; Liu, Fang; Zhang, Zhihua

doi:10.1016/j.micron.2011.01.007

Cited by 26 publications

(11 citation statements)

References 28 publications

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“…80 Concerning the carbon source, the most preferred in CVD are hydrocarbons such as methane, 81 ethane, 82 ethylene, 83 acetylene, 84 xylene, 85,86 eventually their mixture, 87 isobutane 88 or ethanol. 89,90 In the case of gaseous carbon source, the CNTs growth efficiency strongly depends on the reactivity and concentration of gas phase intermediates produced together with reactive species and free radicals as a result of hydrocarbon decomposition. Thus, it can be expected that the most efficient intermediates, which have the potential of chemisorption or physisorption on the catalyst surface to initiate CNT growth, should be produced in the gas phase.…”

Section: Chemical Vapour Depositionmentioning

confidence: 99%

Methods for carbon nanotubes synthesis—review

et al. 2011

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Section: Chemical Vapour Depositionmentioning

confidence: 99%

Methods for carbon nanotubes synthesis—review

et al. 2011

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“…In 1953, Davis et al [22] firstly discovered the helical carbon fibers by the catalytic cracking of CO on the surface of refractory bricks. From then on, various morphologies helical carbon materials have been synthesized [23][24][25][26][27][28][29]. Compared to the ordinary flat carbon fibers, the HCMs in microscale or nanoscale process the characteristics of the low density, high specific strength, heat resistance, low thermal capacitance, and chemical stability [30,31].…”

Section: Introductionmentioning

confidence: 99%

A review of helical carbon materials structure, synthesis and applications

Wang

Jiao

et al. 2020

Rare Met.

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The helical structures possess unique physical and chemical properties, such as superelasticity, high specific strength, chirality, and electromagnetic cross-polarization characteristics. With the development of nanoscience and nanotechnology, helical structures with various scales have been discovered or synthesized artificially. Among them, the helical carbon materials receive much attention around the world. Herein, we present a brief review of the development of helical carbon materials in terms of structures, synthesis techniques and mechanisms, and applications. The controllable designing of catalysts, carbon sources and reaction parameters plays a key role to optimize the properties of the helical carbon materials. At the same time, the applications in microwave absorption devices, sensors, catalysts, energy conversions and storage devices, and solar cell are also presented. For the good chemical and physical properties, helical carbon materials have a good application prospect in many fields. The potential issues and future opportunities of the helical carbon materials are also proposed.

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“…The highest ID/IG value of S-CNTs demonstrated the low quality of CNTs. 26 The high IG peak indicated that V-CNTs showed higher graphitization and orientation. The FTIR patterns (Figure 4e) revealed that the three samples had the same chemical composition.…”

Section: ■ Experimentsmentioning

confidence: 99%

Steric Configuration-Controllable Carbon Nanotubes-Integrated SiC Membrane for Ultrafine Particles Filtration

Yuan

Feng

Zhang

et al. 2020

Ind. Eng. Chem. Res.

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Airborne fine particles have severe effects on abating the duration and efficiency of filters due to their high penetration probability. One-dimensional (1D) nanomaterials-constructed filters show great promise in efficient removal of fine particles. In this work, in situ growth of 1D nanostructure membrane without introducing a transition or sacrificial layer on large-pore SiC support was creatively developed. The controllable growth of carbon nanotubes (CNTs) via chemical vapor deposition (CVD) can bridge a loose structure on the neighbored SiC particles. This CNTs-constructed hierarchical structure can significantly ameliorate the large pores of the SiC support (SiC pore size ∼32.9 μm, CNTs/SiC membrane pore size ∼15 μm). By adjusting the CVD parameters, different configurations of CNT membranes were controllably prepared, in which the special structure of the CNT membrane (S-CNTs/SiC) showed a comparatively higher gas permeance of ∼450 m3/(m2·h·kPa) and fine particle removal efficiency (99.48%). In addition, the S-CNTs/SiC membrane also showed a good long-term filtration performance for fine particles. This work provides a new insight into the preparation of a 1D nanostructure membrane on large-pore ceramic supports high-efficient removal of fine particles.

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Synthesis of heterostructured helical carbon nanotubes by iron-catalyzed ethanol decomposition

Cited by 26 publications

References 28 publications

Methods for carbon nanotubes synthesis—review

Methods for carbon nanotubes synthesis—review

A review of helical carbon materials structure, synthesis and applications

Steric Configuration-Controllable Carbon Nanotubes-Integrated SiC Membrane for Ultrafine Particles Filtration

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