@article{ART003342739},
author={Kang Taehoon and Park Chae Yeon and Cho Wonho and Lee Seungjun and Seo Byung Hwa and Hwang Ye-Jin},
title={Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor},
journal={Carbon Letters},
issn={1976-4251},
year={2026},
volume={36},
number={2},
pages={997-1006},
doi={10.1007/s42823-026-01047-0}
TY - JOUR
AU - Kang Taehoon
AU - Park Chae Yeon
AU - Cho Wonho
AU - Lee Seungjun
AU - Seo Byung Hwa
AU - Hwang Ye-Jin
TI - Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor
JO - Carbon Letters
PY - 2026
VL - 36
IS - 2
PB - Korean Carbon Society
SP - 997
EP - 1006
SN - 1976-4251
AB - Multi-walled carbon nanotubes (MWCNTs), widely recognized for their excellent electrical, thermal, and mechanical properties, have gained significant attention across various fields. However, aggregation due to their high Van der Waals force limits their processability and applications. Surface functionalization can offer a solution to these limitations and broadens their potential uses. Nevertheless, the low reaction rates of covalent functionalization in conventional batch reactors, caused by MWCNT aggregation, remain a significant challenge to overcome. Moreover, controlling the degree of functionalization in batch reactors is difficult. In this work, we demonstrated covalent functionalization of MWCNT with 4-bromoaniline to produce MWCNT-PhBr with high, controllable degrees of functionalization, using a customized packed-bed flow reactor. The reaction was performed under various conditions, including the reactant injection sequence, reaction time (1–3 h), temperature (60–80 ℃), and concentration of reactant (0.42–1.72 M). The resulting degree of functionalization was controlled within the range of 1.81–5.70 wt%. Notably, the highest degree of functionalization obtained under the optimized flow conditions (5.70 wt% at 70 °C and 1.72 M) represents a 2.11-fold increase compared to that achieved under the optimized batch conditions (2.70 wt% at 60 °C and 0.86 M). These results suggest that the flow system is an efficient and reliable method for synthesizing functionalized MWCNTs with the desired functional group content.
KW - Multi-walled carbon nanotubes Surface functionalization Covalent functionalization Flow reactors Packed-bed flow reactors
DO - 10.1007/s42823-026-01047-0
ER -
Kang Taehoon, Park Chae Yeon, Cho Wonho, Lee Seungjun, Seo Byung Hwa and Hwang Ye-Jin. (2026). Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor. Carbon Letters, 36(2), 997-1006.
Kang Taehoon, Park Chae Yeon, Cho Wonho, Lee Seungjun, Seo Byung Hwa and Hwang Ye-Jin. 2026, "Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor", Carbon Letters, vol.36, no.2 pp.997-1006. Available from: doi:10.1007/s42823-026-01047-0
Kang Taehoon, Park Chae Yeon, Cho Wonho, Lee Seungjun, Seo Byung Hwa, Hwang Ye-Jin "Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor" Carbon Letters 36.2 pp.997-1006 (2026) : 997.
Kang Taehoon, Park Chae Yeon, Cho Wonho, Lee Seungjun, Seo Byung Hwa, Hwang Ye-Jin. Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor. 2026; 36(2), 997-1006. Available from: doi:10.1007/s42823-026-01047-0
Kang Taehoon, Park Chae Yeon, Cho Wonho, Lee Seungjun, Seo Byung Hwa and Hwang Ye-Jin. "Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor" Carbon Letters 36, no.2 (2026) : 997-1006.doi: 10.1007/s42823-026-01047-0
Kang Taehoon; Park Chae Yeon; Cho Wonho; Lee Seungjun; Seo Byung Hwa; Hwang Ye-Jin. Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor. Carbon Letters, 36(2), 997-1006. doi: 10.1007/s42823-026-01047-0
Kang Taehoon; Park Chae Yeon; Cho Wonho; Lee Seungjun; Seo Byung Hwa; Hwang Ye-Jin. Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor. Carbon Letters. 2026; 36(2) 997-1006. doi: 10.1007/s42823-026-01047-0
Kang Taehoon, Park Chae Yeon, Cho Wonho, Lee Seungjun, Seo Byung Hwa, Hwang Ye-Jin. Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor. 2026; 36(2), 997-1006. Available from: doi:10.1007/s42823-026-01047-0
Kang Taehoon, Park Chae Yeon, Cho Wonho, Lee Seungjun, Seo Byung Hwa and Hwang Ye-Jin. "Efficient covalent functionalization of multi-walled carbon nanotubes in a flow reactor" Carbon Letters 36, no.2 (2026) : 997-1006.doi: 10.1007/s42823-026-01047-0
