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Nano Research

Article Title

Freestanding macroscopic metal-oxide nanotube films derived from carbon nanotube film templates

Authors

He Ma, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Yang Wei, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Jiangtao Wang, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Xiaoyang Lin, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Wenyun Wu, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Yang Wu, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Ling Zhang, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Peng Liu, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Jiaping Wang, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Qunqing Li, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Shoushan Fan, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
Kaili Jiang, State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua–Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China

Keywords

metal-oxide nanotube film, atomic layer deposition, carbon nanotube, humidity sensor, catalyst support

Abstract

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.

Graphical Abstract

Publisher

Tsinghua University Press

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