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Direct Synthesis of Colorful Single-Walled Carbon Nanotube Thin Films.


ABSTRACT: In floating catalyst chemical vapor deposition (FC-CVD), tuning chirality distribution and obtaining narrow chirality distribution of single-walled carbon nanotubes (SWCNTs) is challenging. Herein, by introducing various amount of CO2 in FC-CVD using CO as a carbon source, we have succeeded in directly synthesizing SWCNT films with tunable chirality distribution as well as tunable colors. In particular, with 0.25 and 0.37 volume percent of CO2, the SWCNT films display green and brown colors, respectively. We ascribed various colors to suitable diameter and narrow chirality distribution of SWCNTs. Additionally, by optimizing reactor temperature, we achieved much narrower ( n, m) distribution clustered around (11,9) with extremely narrow diameter range (>98% between 1.2 and 1.5 nm). We propose that CO2 may affect CO disproportionation and nucleation modes of SWCNTs, resulting in SWCNTs' various diameter ranges. Our work could provide a new route for high-yield and direct synthesis of SWCNTs with narrow chirality distribution and offer potential applications in electronics, such as touch sensors or transistors.

SUBMITTER: Liao Y 

PROVIDER: S-EPMC6150687 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Direct Synthesis of Colorful Single-Walled Carbon Nanotube Thin Films.

Liao Yongping Y   Jiang Hua H   Wei Nan N   Laiho Patrik P   Zhang Qiang Q   Khan Sabbir A SA   Kauppinen Esko I EI  

Journal of the American Chemical Society 20180730 31


In floating catalyst chemical vapor deposition (FC-CVD), tuning chirality distribution and obtaining narrow chirality distribution of single-walled carbon nanotubes (SWCNTs) is challenging. Herein, by introducing various amount of CO<sub>2</sub> in FC-CVD using CO as a carbon source, we have succeeded in directly synthesizing SWCNT films with tunable chirality distribution as well as tunable colors. In particular, with 0.25 and 0.37 volume percent of CO<sub>2</sub>, the SWCNT films display green  ...[more]

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