scholarly journals Catalyst Composition and Content Effects on the Synthesis of Single-Walled Carbon Nanotubes by Arc Discharge

2007 ◽  
Vol 2007 ◽  
pp. 1-4 ◽  
Author(s):  
Tingkai Zhao ◽  
Qinghu Tang ◽  
Yongning Liu ◽  
Changchun Zhu ◽  
Xiang Zhao
Keyword(s):  
Carbon Nanotubes ◽  
Production Process ◽  
Production Rate ◽  
Arc Discharge ◽  
Single Walled Carbon Nanotubes ◽  
Experimental Results ◽  
Single Walled Carbon ◽  
Catalyst Composition ◽  
Catalyst Content ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWCNTs) were prepared by a modified arc discharging furnace using Fe-Ni-Mg powders as catalyst at600∘C. The effects of catalyst composition and content on the production rate and purity of SWCNTs are investigated in this paper. When the Fe-Ni-Mg catalyst composition is 2: 1: 2wt%and the catalyst content is 5wt%, the experimental results indicate that the production of SWCNTs is 12 grams per hour, and the purity and diameter of SWCNTs are70%and 1.22∼1.38 nm, respectively. The results indicate that the cooperative function of catalyst composition and content plays an important role in the production of SWCNTs. The aim of this work is to control the production process of SWCNTs efficiently.

Synthesis of single-walled carbon nanotubes by an arc-discharge method using selenium as a promoter

Carbon ◽  
2011 ◽  
Vol 49 (14) ◽  
pp. 4792-4800 ◽  
Author(s):  
Liping Huang ◽  
Bin Wu ◽  
Jianyi Chen ◽  
Yunzhou Xue ◽  
Yunqi Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Arc Discharge ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Discharge Method

scholarly journals Preparation of Bulk13C-Enriched Graphene Materials

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Leilei Tian ◽  
Xin Wang ◽  
Li Cao ◽  
Mohammed J. Meziani ◽  
Chang Yi Kong ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Convenient Method ◽  
Carbon Nanomaterials ◽  
Arc Discharge ◽  
Single Walled Carbon Nanotubes ◽  
Production Technique ◽  
Graphene Oxides ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
Bulk Production

Arc-discharge has been widely used in the bulk production of various carbon nanomaterials, especially for structurally more robust single-walled carbon nanotubes. In this paper, the same bulk-production technique was applied to the synthesis of significantly13C-enriched graphitic materials, from which graphene oxides similarly enriched with13C were prepared and characterized. The results demonstrate that arc-discharge is a convenient method to produce bulk quantities of13C-enriched graphene materials from relatively less expensive precursors (largely amorphous13C powders).

Effects of the Molecular Weight of PCz on Selective Extraction of Large-Diameter Semiconducting Single-Walled Carbon Nanotubes

2021 ◽  
Vol 69 ◽  
pp. 11-21
Author(s):  
Ping Zhang ◽  
Wen Hui Yi ◽  
Bai Lei ◽  
Jin Feng Zhou ◽  
Yi Long Tian ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Weight ◽  
Arc Discharge ◽  
Large Diameter ◽  
Single Walled Carbon Nanotubes ◽  
Selective Extraction ◽  
High Yield ◽  
Extraction Technology ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Due to the difficulty in the selective synthesis of semiconductor (s-) and metal (m-) single-walled carbon nanotubes (SWCNTs), we still need to explore the selective extraction technology of s-SWCNTs. Using Poly[9-(1-octylonoyl)-9H-carbazole-2,7-diyl] (PCz) extraction of s-SWCNTs has attracted extensive attention in recent years, because it can selective extraction of large-diameter s-SWCNTs with high purity. However, influence of the molecular weight of this polymer on the s-SWCNTs selective extraction properties remains unclear. In this study, we used PCz with different average molecular weights to study the ability of selective extraction s-SWCNTs from pristine arc discharge carbon nanotubes. Spectra studies indicate that compared to the PCz with lower molecular weight, the PCz with higher molecular weight has better selective extraction ability, and can help to obtain s-SWCNTs with higher purity (>99%) and high yield. FETs devices have been prepared by s-SWCNTs obtained via PCz with higher molecular weight exhibit higher on/off ratio, lower off current and lower subthreshold swing. This work offers a reference of the design and synthesis of PCz polymer that performs sufficient selective ability in extracting s-SWCNTs with promising applications.

A simple and highly effective process for the purification of single-walled carbon nanotubes synthesized with arc-discharge

Carbon ◽  
2009 ◽  
Vol 47 (15) ◽  
pp. 3544-3549 ◽  
Author(s):  
Hyeon Gu Cho ◽  
Sang Won Kim ◽  
Hyeong Jun Lim ◽  
Chang Hoon Yun ◽  
Heon Sang Lee ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Arc Discharge ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Highly Effective ◽  
Walled Carbon Nanotubes
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