Synthesis and High Thermal Stability of Double-Walled Carbon Nanotubes Using Nickel Formate Dihydrate as Catalyst Precursor

2007 ◽  
Vol 111 (13) ◽  
pp. 5006-5013 ◽  
Author(s):  
Qingfeng Liu ◽  
Wencai Ren ◽  
Feng Li ◽  
Hongtao Cong ◽  
Hui-Ming Cheng
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Stability ◽  
High Thermal Stability ◽  
Catalyst Precursor ◽  
Nickel Formate ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Thermal Stability Of

Oxidation and Thermal Stability of Linear Carbon Chains Contained in Thermally Treated Double-Walled Carbon Nanotubes

Small ◽  
2007 ◽  
Vol 3 (5) ◽  
pp. 788-792 ◽  
Author(s):  
Hiroyuki Muramatsu ◽  
Yoong Ahm Kim ◽  
Takuya Hayashi ◽  
Morinobu Endo ◽  
Mauricio Terrones ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Carbon Chains ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Thermal Stability Of ◽  
Thermally Treated

Enhanced thermal stability of multi-walled carbon nanotubes after coating with polyaniline salt

2012 ◽  
Vol 97 (8) ◽  
pp. 1405-1414 ◽  
Author(s):  
Zuzana Morávková ◽  
Miroslava Trchová ◽  
Elena Tomšík ◽  
Juraj Čechvala ◽  
Jaroslav Stejskal
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Thermal Stability Of

PP/MWCNTs composites: Effects of length of MWCNTs on isothermal crystallization behaviors, crystalline structure, and thermal stability

2017 ◽  
Vol 52 (4) ◽  
pp. 503-517 ◽  
Author(s):  
Zheng-Ian Lin ◽  
Ching-Wen Lou ◽  
Yi-Jun Pan ◽  
Chien-Teng Hsieh ◽  
Chien-Lin Huang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Stability ◽  
Crystalline Structure ◽  
Isothermal Crystallization ◽  
Crystallization Rate ◽  
Nucleating Agent ◽  
Scanning Calorimetry ◽  
Crystallization Behaviors ◽  
Walled Carbon Nanotubes ◽  
Thermal Stability Of

This study adopts the melt compounding method to prepare /mutli-walled carbon nanotubes composites. The effects of different lengths of the mutli-walled carbon nanotubes on the isothermal crystallization behaviors, crystalline structure, and thermal stability of the polypropylene/mutli-walled carbon nanotubes composites are examined. The PLM results show that the combination of mutli-walled carbon nanotubes prevents the growth of polypropylene spherulites, and thus results in a small size of spherulites. The differential scanning calorimetry results show that the short (S-) or long (L-) mutli-walled carbon nanotubes can function as the nucleating agent of polypropylene, which accelerates the crystallization rate of polypropylene. Avrami theory analyses indicate that the addition of short-mutli-walled carbon nanotubes particularly provides polypropylene/mutli-walled carbon nanotubes composites with a high crystallization rate. The X-ray diffraction results show that the combination of mutli-walled carbon nanotubes does not pertain to the crystal structure. The TGA test results show that long-mutli-walled carbon nanotubes outperform short -mutli-walled carbon nanotubes in improving the thermal stability of polypropylene, and both can significantly improve it.

Synthesis of Double-Walled Carbon Nanotubes by Floating Chemical Vapor Deposition Method in a Reactor with Varied Diameter

2013 ◽  
Vol 662 ◽  
pp. 3-6
Author(s):  
Chang Yu ◽  
Xiang Tong Meng ◽  
Lei Zhang ◽  
Jie Shan Qiu
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Electron Microscope ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Chemical Vapor Deposition Method ◽  
Catalyst Precursor ◽  
Deposition Method ◽  
Double Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Double-walled carbon nanotubes (DWCNTs) have been synthesized by a floating catalytic chemical vapor deposition method (FC-CVD) in diameter-varied reactor with xylene as carbon sources, ferrocene as catalyst precursor, and sulfur as additive. The as-grown products were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), and Raman spectrometer. The results show that DWCNTs with a high graphite degree is centimeter-scale in length, and the inner diameter varies in the range of 1.5-1.7 nm. The effect of reactor diameter on the structure and morphology of the products was also investigated and compared. It is believed that the diameter-varied reactor may become a feasible route to the mass and continuous production of DWCNTs.

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