Charge Transfer between Metal Clusters and Growing Carbon Structures in Chirality-Controlled Single-Walled Carbon Nanotube Growth

Wang, Qiang; Yang, Shuo‐Wang; Yang, Yanhui; Chan-Park, Mary B.; Chen, Yuan

doi:10.1021/jz200417b

Cited by 23 publications

(24 citation statements)

References 48 publications

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“…They proposed that the energetic smoothness of carbon addition in (6,5) SWCNT may account for its experimentally high occurrence. Wang et al [414] simulated the growth of armchair (5,5), chiral (6,5), and zigzag (9,0) nanotubes on a relaxed Ni 55 cluster and studied the reactivity caused by charge transfer between the metal particle and the tube. They notably found that the edge of a (6,5) tube presents one particularly reactive site which could explain the preferential growth of chiral (6,5) nanotubes over armchair (5,5) and zigzag (9,0) nanotubes.…”

Section: Growth-rate Selectivitymentioning

confidence: 99%

Current understanding of the growth of carbon nanotubes in catalytic chemical vapour deposition

Jourdain

Bichara

2013

Carbon

490

334

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Due to its higher degree of control and its scalability, catalytic chemical vapour deposition is now the prevailing synthesis method of carbon nanotubes. Catalytic chemical vapour deposition implies the catalytic conversion of a gaseous precursor into a solid material at the surface of reactive particles or of a continuous catalyst film acting as a template for the growing material. Significant progress has been made in the field of nanotube synthesis by this method although nanotube samples still generally suffer from a lack of structural control. This illustrates the fact that numerous aspects of the growth mechanism remain ill-understood. The first part of this review is dedicated to a summary of the general background useful for beginners in the field. This background relates to the carbon precursors, the catalyst nanoparticles, their interaction with carbonaceous compounds and their environment. The second part provides an updated review of the influence of the synthesis parameters on the features of nanotube samples: diameters, chirality, metal/semiconductor ratio, length, defect density and catalyst yield. The third part is devoted to important and still open questions, such as the mechanism of nanotube nucleation and the chiral selectivity, and to the hypotheses currently proposed to answer them

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Section: Growth-rate Selectivitymentioning

confidence: 99%

Current understanding of the growth of carbon nanotubes in catalytic chemical vapour deposition

Jourdain

Bichara

2013

Carbon

490

334

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“…The total binding energy required for the cap lift off can be obtained by adding the binding energy between each carbon atom in the cap and the catalyst surface (E BC-M ). Larger-diameter caps contain greater number of carbon atoms (C cap ) ((6,4):C cap ∼ 30, (6,5):C cap ∼ 43) 27 , 28 , thereby requiring a higher energy for lifting off the large diameter SWNTs than that for the smaller ones. Thus, the upper limit of diameter for SWNTs grown under the same growth temperature should be down shifted by introducing the pretreatment due to the increase of E BC-M (Fig.…”

Section: Discussionmentioning

confidence: 99%

Preferential synthesis of (6,4) single-walled carbon nanotubes by controlling oxidation degree of Co catalyst

Kaneko

Shibuta

et al. 2017

Sci Rep

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Chirality-selective synthesis of single-walled carbon nanotubes (SWNTs) has been a research goal for the last two decades and is still challenging due to the difficulty in controlling the atomic structure in the one-dimensional material. Here, we develop an optimized approach for controlling the chirality of species by tuning the oxidation degree of Co catalyst. Predominant synthesis of (6,4) SWNTs is realized for the first time. The detailed mechanism is investigated through a systematic experimental study combined with first-principles calculations, revealing that the independent control of tube diameter and chiral angle achieved by changing the binding energy between SWNTs (cap and tube edge) and catalyst causes a drastic transition of chirality of SWNTs from (6,5) to (6,4). Since our approach of independently controlling the diameter and chiral angle can be applied to other chirality species, our results can be useful in achieving the on-demand synthesis of specific-chirality SWNTs.

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“…1 There have been also first-principles theoretical studies on the growth of single-walled CNTs concerning also the initial formation of the cap on transition-metal catalytic particles [10,11]. Reich et al [12], have reported that the geometric structure of a cap uniquely determines the chirality of the nanotube that is attached to it, implying a possibility for chirality selective growth of single-walled CNTs by CVD method.…”

Section: Introductionmentioning

confidence: 99%

Capped carbon nanotube photovoltaic cells: Influence of distribution of the five-membered rings on the efficiency

Ono

Tanikawa

Kuwahara

et al. 2015

Diamond and Related Materials

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Charge Transfer between Metal Clusters and Growing Carbon Structures in Chirality-Controlled Single-Walled Carbon Nanotube Growth

Cited by 23 publications

References 48 publications

Current understanding of the growth of carbon nanotubes in catalytic chemical vapour deposition

Current understanding of the growth of carbon nanotubes in catalytic chemical vapour deposition

Preferential synthesis of (6,4) single-walled carbon nanotubes by controlling oxidation degree of Co catalyst

Capped carbon nanotube photovoltaic cells: Influence of distribution of the five-membered rings on the efficiency

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