CNTs 합성을 통해 향상된 비표면적을 갖는 Ti 다공체의 제조Fabrication of Ti Porous body with Improved Specific Surface Area by Synthesis of CNTs
- Other Titles
- Fabrication of Ti Porous body with Improved Specific Surface Area by Synthesis of CNTs
- Authors
- 최혜림; 변종민; 석명진; 오승탁; 김영도
- Issue Date
- Jun-2016
- Publisher
- 한국분말야금학회
- Keywords
- Titanium porous body; freeze drying method; carbon nanotube (CNT); catalytic chemical vapor deposition (CCVD); specific surface area
- Citation
- 한국분말야금학회지, v.23, no.3, pp.235 - 239
- Indexed
- KCI
- Journal Title
- 한국분말야금학회지
- Volume
- 23
- Number
- 3
- Start Page
- 235
- End Page
- 239
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/22984
- DOI
- 10.4150/KPMI.2016.23.3.235
- ISSN
- 1225-7591
- Abstract
- This study is performed to fabricate a Ti porous body by freeze drying process using titanium hydride (TiH2) powder and camphene. Then, the Ti porous body is employed to synthesize carbon nanotubes (CNTs) using thermal catalytic chemical vapor deposition (CCVD) with Fe catalyst and methane (CH4) gas to increase the specific surface area. The synthesized Ti porous body has 100 μm-sized macropores and 10-30 μm-sized micropores. The synthesized CNTs have random directions and are entangled with adjacent CNTs. The CNTs have a bamboo-like structure, and their average diameter is about 50 nm. The Fe nano-particles observed at the tip of the CNTs indicate that the tip growth model is applicable. The specific surface area of the CNT-coated Ti porous body is about 20 times larger than that of the raw Ti porous body. These CNT-coated Ti porous bodies are expected to be used as filters or catalyst supports.
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