Growth of semiconducting single-wall carbon nanotubes with a narrow band-gap distribution

Zhang, Feng; Hou, Peng; Liu, Chang; Wang, Bing Wei; Jiang, Hua; Chen, Mao Lin; Sun, Dong; Li, Jin Cheng; Cong, Hong Tao; Kauppinen, Esko I.; Cheng, Hui

doi:10.1038/ncomms11160

Cited by 80 publications

(74 citation statements)

References 58 publications

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“…In the recent years, the other two growth modes relying on the diameter ratio between SWCNT and catalyst particle size has become more and more important in controlling SWCNT diameter and even chirality [102–104]. …”

Section: Reviewmentioning

confidence: 99%

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Investigation of growth dynamics of carbon nanotubes

Kharlamova¹

2017

Beilstein J. Nanotechnol.

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The synthesis of single-walled carbon nanotubes (SWCNTs) with defined properties is required for both fundamental investigations and practical applications. The revealing and thorough understanding of the growth mechanism of SWCNTs is the key to the synthesis of nanotubes with required properties. This paper reviews the current status of the research on the investigation of growth dynamics of carbon nanotubes. The review starts with the consideration of the peculiarities of the growth mechanism of carbon nanotubes. The physical and chemical states of the catalyst during the nanotube growth are discussed. The chirality selective growth of nanotubes is described. The main part of the review is dedicated to the analysis and systematization of the reported results on the investigation of growth dynamics of nanotubes. The studies on the revealing of the dependence of the growth rate of nanotubes on the synthesis parameters are reviewed. The correlation between the lifetime of catalyst and growth rate of nanotubes is discussed. The reports on the calculation of the activation energy of the nanotube growth are summarized. Finally, the growth properties of inner tubes inside SWCNTs are considered. 826

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Section: Reviewmentioning

confidence: 99%

“…In [104], the control of the growth mode of SWCNTs led to the synthesis of semiconducting SWCNTs with a narrow band-gap distribution. SWCNTs were grown on acorn-like partially carbon-coated Co nanoparticles.…”

Section: Reviewmentioning

confidence: 99%

Investigation of growth dynamics of carbon nanotubes

Kharlamova¹

2017

Beilstein J. Nanotechnol.

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“…[25][26][27] The RPM breathing mode of SWCNT is also shown at 142 cm À1 . 28 These results conrm that these carbon nanomaterials have perfect structures.…”

Section: Resultsmentioning

confidence: 89%

Carbon nanotubes of oil fly ash as lubricant additives for different base oils and their tribology performance

et al. 2017

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Oil fly ash has been reported to be a good source for the production of carbon nanotubes (CNTs). Recently, these CNTs were evaluated as lubricant additives in sunflower base oil and were found to exhibit excellent tribological properties. In this work, these CNTs were tested as lubricant additives in 100SN, 500SN and 150BS Saudi Aramco base oils. The results on other commercial carbon nanostructures like multiwall and single wall CNTs and graphene are also included in this study for comparison. Excellent tribological performance was obtained with CNTs of fly ash at a very small concentration. The observed reduction in values of the friction coefficient between two metallic surfaces using these CNTs was found to be superior to those of other carbon nanomaterials. The value of the friction coefficient was reduced by around 20% at a concentration of 0.1 wt%. These values were also investigated as a function of load, speed and temperature. The rheological behaviour showed that the viscosity of the 0.1 wt% CNTsimpregnated 500SN oil is almost invariant compared to that of the pure one. It is therefore suggested that CNTs of fly ash may be a good lubricant additive to minimize the friction and improve the fuel economy.

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“…Among all nanomaterials, due to high carrier mobility, good stability, and tunable band-gap structure with small diameter, CNTs become a perfect structure for making channel for high-performance field effect transistors (FETs), integrated circuits, and other electronic applications (Zhang et al 2016) and hence, research communities have started focusing on various application aspects of CNTs. The requirement of structural quality of CNTs is different for different types of applications.…”

Section: Introductionmentioning

confidence: 99%

A new approach for orientation-controlled growth of CNTs: an in-depth analysis on the role of oxygen plasma treatment to catalyst

Tripathi

Islam

2017

Appl Nanosci

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In this paper, a novel and easy technique is proposed for orientation controlled growth of MWNTs. The results indicate that when CNT growth was carried over the substrate, not treated with plasma, horizontal network of MWNTs was formed. Plasma treatment to the substrate prior to CNTs growth led to formation of vertically aligned MWNTs. An in situ growth as a function of plasma treatment time reveals the mechanism behind this flip process. All experiments were performed under atmospheric pressure. At every step during time-dependent growth process, CNTs were characterized using FESEM, HRTEM, and Raman spectroscopy. Iron sputtered silicon substrate was also investigated to validate the excellent formation of as-grown vertical CNTs and also to analyze the role of oxygen plasma behind the orientation-controlled growth. The as-grown CNTs over the iron sputtered silicon substrate with or without plasma treatment were characterized by FESEM and AFM. The successful orientationcontrolled growth of CNTs was achieved.

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Growth of semiconducting single-wall carbon nanotubes with a narrow band-gap distribution

Cited by 80 publications

References 58 publications

Investigation of growth dynamics of carbon nanotubes

Investigation of growth dynamics of carbon nanotubes

Carbon nanotubes of oil fly ash as lubricant additives for different base oils and their tribology performance

A new approach for orientation-controlled growth of CNTs: an in-depth analysis on the role of oxygen plasma treatment to catalyst

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