Pore structure changes in free-standing single-wall carbon nanotube film on vacuum high-temperature annealing

Yuito Kamijyou; Radovan Kukobat; Ayumi Furuse; Hayato Otsuka; Kazunori Fujisawa; Takuya Hayashi; Toshio Sakai; Katsumi Kaneko

Carbon Trends (Oct 2022)

Pore structure changes in free-standing single-wall carbon nanotube film on vacuum high-temperature annealing

Yuito Kamijyou,
Radovan Kukobat,
Ayumi Furuse,
Hayato Otsuka,
Kazunori Fujisawa,
Takuya Hayashi,
Toshio Sakai,
Katsumi Kaneko

Affiliations

Yuito Kamijyou: Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan; Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
Radovan Kukobat: Center for Biomedical Research, Faculty of Medicine, University of Banja Luka, Save Mrkalja 14, Banja Luka 78000, Bosnia and Herzegovina
Ayumi Furuse: Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
Hayato Otsuka: Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
Kazunori Fujisawa: Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
Takuya Hayashi: Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan; Department of Water Environment and Civil Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
Toshio Sakai: Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
Katsumi Kaneko: Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan; Corresponding author at: Research Initiative for Supra-Materials, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan.

Journal volume & issue: Vol. 9
p. 100230

Abstract

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The fabrication of free-standing single-wall carbon nanotube (SWCNT) film is promising for better understanding of SWCNT and many applications. Here we fabricated highly pure and crystalline free-standing SWCNT film using vacuum high-temperature annealing. Impurities can be removed thoroughly by vacuum annealing at 2073 K and 10−1 Pa for 3 h. Also, the vacuum annealing was quite efficient for removing nanowindows and improving crystallinity of the SWCNT film. The transmission electron microscopic observation and X-ray diffraction confirmed almost no change in the average tube diameter and bundle structure of SWCNT. The vacuum high-temperature annealing decreases the N2 adsorption amount at 77 K by more than half, supporting closing nanowindows on graphene wall of SWCNT by the vacuum annealing. Our free-standing SWCNT film is expected to promote a fundamental understanding of electrochemical energy issues by the application these films as the well-characterized electrodes.

Published in Carbon Trends

ISSN: 2667-0569 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Science: Chemistry
Website: https://www.journals.elsevier.com/carbon-trends/

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