TY - JOUR
T1 - Directed Assembly and Microstructural Control of Carbon Nanotube Fibers via Carbon Source Manipulation
AU - Niu, Yutao
AU - He, Zhao
AU - Yang, Zhengpeng
AU - Wang, Shan
AU - Ayob, Eman A.
AU - Amin, Mohammed
AU - Zhao, Liming
AU - Cao, Yufang
AU - Guo, Zhanhu
AU - Zhang, Yongyi
PY - 2025/3/21
Y1 - 2025/3/21
N2 - Floating catalyst chemical vapor deposition (FCCVD) is recognized as a pivotal technique for fabricating high-performance carbon nanotube fibers (CNTFs). However, the role of carbon-source-directed growth and assembly in regulating the alignment and densification of CNTFs has received limited attention. Herein, we systematically investigated the assembly and microstructural regulation mechanisms of CNTFs via adjusting carbon sources (e.g., ethanol and acetone) in the FCCVD process. Analysis results demonstrate that compared with tangled few-wall carbon nanotubes (CNTs) derived from ethanol, the rigid multiwall CNTs with acetone as the carbon source tend to be aligned and densely arranged during gas-phase assembly, thus improving the strength of CNTFs. As a result, the acetone-derived CNTF with low entangled morphology showcases superior alignment and mechanical properties compared to those of ethanol-derived CNTF. This work offers critical insights and guidance for the direct floating-spinning of high-performance CNTFs.
AB - Floating catalyst chemical vapor deposition (FCCVD) is recognized as a pivotal technique for fabricating high-performance carbon nanotube fibers (CNTFs). However, the role of carbon-source-directed growth and assembly in regulating the alignment and densification of CNTFs has received limited attention. Herein, we systematically investigated the assembly and microstructural regulation mechanisms of CNTFs via adjusting carbon sources (e.g., ethanol and acetone) in the FCCVD process. Analysis results demonstrate that compared with tangled few-wall carbon nanotubes (CNTs) derived from ethanol, the rigid multiwall CNTs with acetone as the carbon source tend to be aligned and densely arranged during gas-phase assembly, thus improving the strength of CNTFs. As a result, the acetone-derived CNTF with low entangled morphology showcases superior alignment and mechanical properties compared to those of ethanol-derived CNTF. This work offers critical insights and guidance for the direct floating-spinning of high-performance CNTFs.
KW - aligned architecture
KW - carbon nanotube fiber
KW - carbon source
KW - entangled network
KW - floating-spinning method
UR - https://www.scopus.com/pages/publications/86000146628
U2 - 10.1021/acsanm.5c00285
DO - 10.1021/acsanm.5c00285
M3 - Article
SN - 2574-0970
VL - 8
SP - 5730
EP - 5738
JO - ACS Applied Nano Materials
JF - ACS Applied Nano Materials
IS - 11
ER -