Projects per year
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.
Original language | English |
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Pages (from-to) | 9797-9800 |
Number of pages | 4 |
Journal | Journal of the American Chemical Society |
Volume | 140 |
Issue number | 31 |
DOIs | |
Publication status | Published - 8 Aug 2018 |
MoE publication type | A1 Journal article-refereed |
Fingerprint
Dive into the research topics of 'Direct Synthesis of Colorful Single-Walled Carbon Nanotube Thin Films'. Together they form a unique fingerprint.Projects
- 4 Finished
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FEDOC / Kauppinen
Kauppinen, E., Khan, S. A., Raula, J., Liao, Y., Laiho, P. & Zhang, Q.
01/06/2016 → 31/12/2018
Project: Business Finland: Other research funding
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CNT-PV: Carbon nanotube hole-transporting and collecting layers for semi-transparent, flexible and low-cost solid-state photovoltaic cells
Zhang, Q., Kauppinen, E. & Wei, N.
01/01/2016 → 31/12/2017
Project: Business Finland: Other research funding
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Sustainable platinum group metal free catalyst materials
Liao, Y., Kauppinen, E. & Khan, S. A.
01/09/2015 → 31/08/2019
Project: Academy of Finland: Other research funding
Equipment
Press / Media
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First-ever colored thin films of nanotubes created
04/09/2018
1 item of Media coverage
Press/Media: Media appearance
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Carbon in colour: First-ever coloured thin films of nanotubes created
28/08/2018 → 29/08/2018
2 items of Media coverage
Press/Media: Media appearance