Synthesis and conductivity measurement of carbon spheres by catalytic CVD using non-magnetic metal complexes

文化大學機構典藏 CCUR > 理工學院 > 工學院 > 化學工程與材料工程學系暨碩士班 > 期刊論文 > Item 987654321/24004

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题名:	Synthesis and conductivity measurement of carbon spheres by catalytic CVD using non-magnetic metal complexes
作者:	Lei, CM (Lei, Chien-Ming) Yuan, WL (Yuan, Wei-Li) Huang, HC (Huang, Hsin-Chen) Ho, SW (Ho, Shao-Wei) Su, CJ (Su, Chi-Jung)
贡献者:	Dept Chem & Mat Engn
关键词:	CHEMICAL-VAPOR-DEPOSITION PULSED-LASER VAPORIZATION NANOTUBES FLUIDIZED-BED REACTOR GROWTH NANOFIBERS KAOLIN RESIN NANOSPHERES COMPOSITES
日期:	2011-08
上传时间:	2013-01-16 13:42:01 (UTC+8)
摘要:	Carbon spheres (CSs) have been an important subject of research in recent years. Catalytic chemical vapor deposition (CCVD) was carried out in this work to synthesize solid-core CSs at mild temperatures from 720 to 810 degrees C. Non-magnetic metal complexes of La, Nb, and Ti, dispersed on porous kaolin support, were tried out as catalyst. X-ray diffraction patterns revealed the graphitic structures of CSs. TEM analysis showed no encapsulated transition-metal nanoparticles inside the CSs. It was found by Raman spectra that the La catalyst resulted in CSs with higher graphitization. To examine the potential applications of CSs to the fields such as catalysis, electrochemistry, and electronic device, values of the thermal and electrical conductivity of the prepared CSs using different catalysts were measured and found to be comparable to those of the commercial carbon black. (C) 2011 Elsevier B.V. All rights reserved.
關聯:	SYNTHETIC METALS Volume: 161 Issue: 15-16 Pages: 1590-1595
显示于类别:	[化學工程與材料工程學系暨碩士班] 期刊論文

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