期刊
ACS APPLIED MATERIALS & INTERFACES
卷 2, 期 7, 页码 1851-1856出版社
AMER CHEMICAL SOC
DOI: 10.1021/am100128m
关键词
vertically aligned carbon nanotubes; alumoxane; catalyst support; chemical vapor deposition
资金
- Air Force Research Laboratories [FA8650-05-D-5807]
- Air Force Office of Scientific Research [FA9550-09-1-0581]
- PrivaTran, LLC via the Army Research Office
A procedure for vertically aligned carbon nanotube (VA-CNT) production has been developed through liquid-phase deposition of alumoxanes (aluminum oxide hydroxides, boehmite) as a catalyst support. Through a simple spin-coating of alumoxane nanoparticles, uniform centimer-square thin film surfaces were coated and used as supports for subsequent deposition of metal catalyst. Uniform VA-CNTs are observed to grow from this film following deposition of both conventional evaporated Fe catalyst, as well as premade Fe nanoparticles drop-dried from the liquid phase. The quality and uniformity of the VA-CNTs are comparable to growth from conventional evaporated layers of Al2O3. The combined use of alumoxane and Fe nanoparticles to coat surfaces represents an inexpensive and scalable approach to large-scale VA-CNT production that makes chemical vapor deposition significantly more competitive when compared to other CNT production techniques.
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