탄소나노튜브 합성 시 촉매 금속의 분산도 향상을 위한 Ti Substrate의 표면 개질 연구Study on Surface Modification of Ti Substrate to Improve the Dispersion of Catalytic Metals on Synthesis of Carbon Nanotubes
- Other Titles
- Study on Surface Modification of Ti Substrate to Improve the Dispersion of Catalytic Metals on Synthesis of Carbon Nanotubes
- Authors
- 곽성열; 김호규; 변종민; 박주혁; 석명진; 오승탁; 김영도
- Issue Date
- Feb-2014
- Publisher
- 한국분말야금학회
- Keywords
- Metal filter; Surface modification; Surface roughness; Nano-catalyst; Carbon nanotube
- Citation
- 한국분말야금학회지, v.21, no.1, pp.28 - 33
- Indexed
- KCI
- Journal Title
- 한국분말야금학회지
- Volume
- 21
- Number
- 1
- Start Page
- 28
- End Page
- 33
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/160646
- DOI
- 10.4150/KPMI.2014.21.1.28
- ISSN
- 1225-7591
- Abstract
- This paper describes the surface modification effect of a Ti substrate for improved dispersibility of the catalyticmetal. Etching of a pure titanium substrate was conducted in 50% H2SO4, 50oC for 1 h-12 h to observe the surfaceroughness as a function of the etching time. At 1 h, the grain boundaries were obvious and the crystal grains weredistinguishable. The grain surface showed micro-porosities owing to the formation of micro-pits less than 1 μm in diameter.
The depths of the grain boundary and micro-pits appear to increase with etching time. After synthesizing the catalyticmetal and growing the carbon nano tube (CNT) on Ti substrate with varying surface roughness, the distributiontrends of the catalytic metal and grown CNT on Ti substrate are discussed from a micro-structural perspective.
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