Freestanding macroscopic metal-oxide nanotube films derived from carbon nanotube film templates
metal-oxide nanotube film, atomic layer deposition, carbon nanotube, humidity sensor, catalyst support
Aligned carbon nanotube films coated with amorphous carbon were developed into novel templates by atomic layer deposition. Freestanding macroscopic metal-oxide nanotube films were then successfully synthesized by using these templates. The reactive amorphous carbon layer greatly improved the nuclei density, which ensured the high quality of the films and allowed for precise control of the wall thickness of the nanotubes. Using template-synthesized alumina nanotube films, we demonstrate a humidity sensor with a high response speed, a transmission electron microscopy (TEM) grid, and a catalyst support. The crossstacked assembly, ultrathin thickness, chemical inertness, and high thermal stability of the alumina nanotube films contributed to the excellent performance of these devices. In addition, it is expected that the metal-oxide nanotube films would have significant potential owing to their material richness, macroscopic appearance, flexibility, compatibility with the semiconducting technologies, and the feasibility of mass production.
Tsinghua University Press
He Ma,Yang Wei,Jiangtao Wang,Xiaoyang Lin,Wenyun Wu,Yang Wu,Ling Zhang,Peng Liu,Jiaping Wang,Qunqing Li,Shoushan Fan,Kaili Jiang, Freestanding macroscopic metal-oxide nanotube films derived from carbon nanotube film templates. NanoRes.2015, 8(6): 2024–2032