Facile tuning of carbon nanotube morphologies via residual carbon control during catalyst preparation stage

서지정보

ㆍ발행기관 : 한국탄소학회 ㆍ수록지정보 : Carbon letters / 31권 / 4호
ㆍ저자명 : Sumin Kim, In Ji Gang, Young Soo Park, Jong Hun Han

목차

Abstract
1 Introduction
2 Experimental
2.1 Materials
2.2 Catalyst preparation
2.3 Synthesis of t-MWCNTs
2.4 Characterization of catalysts and t-MWCNTs
3 Results and discussion
3.1 Characterization of catalysts
3.2 t-MWCNTs
4 Conclusion
Acknowledgements
References

영어 초록

In this study, Fe–Mo–MgO catalysts for the synthesis of carbon nanotubes (CNTs) were prepared using the combustion method and CNTs were synthesized through catalytic chemical vapor deposition. The combustion time was controlled to 0.5, 1, 2, 3, 5, 10, and 24 h in the catalyst preparation stage. The residual carbon contents after the combustion stage and the morphologies of synthesized CNTs were also analyzed. The diameter, yield, and crystallinity of the synthesized CNTs were found to remarkably vary according to the combustion time in the catalyst preparation process. The amount of residual carbon in the catalyst considerably affects the purity, crystallinity, diameter and its distribution, and wall number of CNTs. Based on the yield and crystallinity, CNTs synthesized using the catalyst with a combustion time of 3 h were determined to be the most appropriate for application in field emitters

참고 자료

없음