CNTs 합성을 통해 향상된 비표면적을 갖는 Ti 다공체의 제조
Fabrication of Ti Porous body with Improved Specific Surface Area by Synthesis of CNTs
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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.
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.
참고문헌 (16)
- John Banhart, , Prog. Mater Sci., 46, pp.559~ (2001)
- G. J. Davies, , Prog. Mater Sci., 18, pp.1899~ (1983)
- H. Nakajima, , Prog. Mater Sci., 52, pp.1091~ (2007)
- Z. G. Wang, , J. Alloys Compd., 384, pp.93~ (2004)
- 석명진, "동결건조 공정에서 동결제의 응고조건이 기공특성에 미치는 영향", 한국분말야금학회지, 21(5), pp.366~370 (2014), 한국분말야금학회
- T. Fukasawa, , J. Am. Ceram. Soc., 84, pp.230~ (2001)
- T. Fukasawa, , J. Mater. Sci., 36, pp.2523~ (2001)
- 김영문, "알칼리 표면개질을 통한 다공성 알루미늄 합금의 하이브리드 기공구조 형성", 한국분말야금학회지, 16(1), pp.22~27 (2009), 한국분말야금학회
- N. Sano, , Carbon, 50, pp.5618~ (2012)
- 박주혁, "촉매 화학기상증착 공정에서 온도구배 설정을 통한 타이타늄 기판에서의 CNT 성장 거동", 한국분말야금학회지, 21(5), pp.371~376 (2014), 한국분말야금학회
- V. Bhosle, , Mater. Sci. Eng.A, A356, pp.190~ (2003)
- S. Deville, , Nat. Mater., 8, pp.966~ (2009)
- K. Araki, , J. Am. Ceram. Soc., 87, pp.1859~ (2004)
- A. Magrez, , Mateials, 3, pp.4871~ (2010)
- F. Doustan, , J. Nanostruct., 3, pp.333~ (2013)
- H. Sharma, , J. Appl. Phys., 110, pp.003726~ (2011)