Study of effect of temperature on the synthesis of carbon nanotubes by floating catalyst method
คำสำคัญ:
Carbon nanotubes, Floating catalyst method, Double stage CVD, Effect of temperatureบทคัดย่อ
Carbon nanotubes (CNTs) were grown by floating catalyst method using acetylene as carbon precursor and ferrocene as catalyst precursor. The CNTs were grown in the temperature range of 700 - 1150°C. The prepared CNTs were purified by acid treatment and air oxidation methods. The purified CNTs were characterized by scanning electron microscopy, transmission electron microscopy and Raman spectroscopy. The purity of CNTs was determined by thermal analysis and X-ray diffraction method. The yield, diameter and length of grown CNTs were same at all temperatures. The crystalline perfection of CNTs increases as the temperature increases. Our results indicated that the synthesis temperature could affect the degree of graphitization of CNTs.Downloads
เอกสารอ้างอิง
Iijima, S. (1991). Helical microtubules of graphitic carbon Nature 354: 56-58.
Wang, Y, Shi, Z. and Yin, J. (2010). Unzipped multiwalled carbon nanotubes for mechanical reinforcement of polymer composites. J. Phys. Chem. C. 114: 19621-19628.
Brataas, A. (2008). Nanoelectronics: Spin surprise in carbon. Nature 452: 419-420.
Dillon , A. C., Jones, K. M., Bekkedahl, T. A., Kiang, C. H., Bethune, D. S. and Heben, M.J. (1997 ) . Storage of hydrogen in single - walled carbon nanotubes. Nature 386: 377-379 .
Oh, J., Yoo, S., Chang, Y. W., Lim , K. and Yoo, K. H. (2009) . Carbon nanotube - based biosensor for detection hepatitis B. Curr . Appl . Phys. 9 : e229-e231.
Wang, C., Waje , M., Wang, X., Tang , J. M., Haddon, R. C. and Yan, Y. (2004). Proton exchange membrane fuel cells with carbon nanotube based electrodes. Nano Lett . 4 : 345-348 .
Yoon, B. J., Hong, E. H., Jee , S. E, Yoon, D. M., Shim, D. S., Son, G. Y, Lee, Y. J., Lee, K. H., Kim, H. S. and Park C. G. (2005) Fabrication of flexible carbon nanotube field emitter arrays by direct microwave irradiation on organic polymer substrate J. Am. Chem. Soc . 127 8234-8235.
Pan, D., Chen, J., Tao, W., Nie, L. and Yao, S. (2006). Polyoxometalate-Modified carbon nanotubes: New catalyst support for methanol Electro-oxidation. Langmuir 22: 5872-5876.
Chen, C., Chen, W. and Zhang, Y. (2005). Synthesis of carbon nano-tubes by pulsed laser-ablation at normal pressure in metal nano-sol. Physica E 28: 121-127.
Vanyorek, L., Loche, D., Katona, H., Casula, M. F., Corrias, A., Konya, Z., Kukovecz, A. and Kiricsi I. (2011). Optimization of the catalytic chemical vapor deposition synthesis of multiwall carbon nanotubes on Fe,Co(Ni)/SiO2 aerogel catalysts by statistical design of experiments. J. Phys. Chem. C 115: 5894- 5902.
Zhang, J., Li, J., Cao, J. and Qian, Y. (2008). Synthesis and characterization of larger diameter carbon nanotubes from catalytic pyrolysis of polypropylene. Mater. Lett. 62: 1839-1842.
Lee, Y. K., Kim, N. S., Park, J., Han, J. B., Choi, Y. S., Ryu, H. and Lee, H. J. (2003). Temperature-dependent growth of carbon nanotubes by pyrolysis of ferrocene and acetylene in the range between 700 and 1000°C. Chem. Phys. Lett. 372: 853-859.
ดาวน์โหลด
เผยแพร่แล้ว
วิธีการอ้างอิง
ฉบับ
บท
การอนุญาต
ลิขสิทธิ์ (c) 2012 วารสารโลหะ, วัสดุ และแร่
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Authors who publish in this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgment of its initial publication in this journal.
