Coupled process of plastics pyrolysis and chemical vapor deposition for controllable synthesis of vertically aligned carbon nanotube arrays

被引：44
作者：
Yang, Zhou [1 ]
Zhang, Qiang [1 ]
Luo, Guohua [1 ]
Huang, Jia-Qi [1 ]
Zhao, Meng-Qiang [1 ]
Wei, Fei [1 ]
机构：
[1] Tsinghua Univ, Beijing Key Lab Green Chem React Engn & Technol, Dept Chem Engn, Beijing 100084, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2010年 / 100卷 / 02期
关键词：
LIQUEFIED PETROLEUM GAS; FLUIDIZED-BED REACTOR; IN-SITU SYNTHESIS; MASS-PRODUCTION; OXIDATIVE DEHYDROGENATION; CATALYTIC COMBUSTION; EMISSION PROPERTIES; NATURAL MATERIALS; SPRAY-PYROLYSIS; WASTE PLASTICS;
D O I：
10.1007/s00339-010-5868-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Efficient conversion of waste plastics into advanced materials is of conspicuous environmental, social and economic benefits. A coupled process of plastic pyrolysis and chemical vapor deposition for vertically aligned carbon nanotube (CNT) array growth was proposed. Various kinds of plastics, such as polypropylene, polyethylene, and polyvinyl chloride, were used as carbon sources for the controllable growth of CNT arrays. The relationship between the length of CNT arrays and the growth time was investigated. It was found that the length of aligned CNTs increased with prolonged growth time. CNT arrays with a length of 500 mu m were obtained for a 40-min growth and the average growth rate was estimated to be 12 mu m/min. The diameter of CNTs in the arrays can be modulated by controlling the growth temperature and the feeding rate of ferrocene. In addition, substrates with larger specific surface area such as ceramic spheres, quartz fibers, and quartz particles, were adopted to support the growth of CNT arrays. Those results provide strong evidence for the feasibility of conversion from waste plastics into CNT arrays via this reported sustainable materials processing.
引用
收藏
页码：533 / 540
页数：8
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