Remote-Contact Catalysis for Target-Diameter Semiconducting Carbon Nanotube Arrays

• DOI: 10.1021/jacs.4c10592
• Publication Date: 2024-11-21T12:32:04Z
• Authors: Jiangtao Wang; Xudong Zheng; Gregory Pitner; Xiang Ji; Tianyi Zhang; Aijia Yao; Jiadi Zhu; Tomás Palacios; Lain-Jong Li; Han Wang; Jing Kong
• Keywords: Carbon fibers

Electrostatic catalysis uses an external electric field (EEF) to rearrange the charge distribution boost reaction rates and selectively produce certain products in small-molecule reactions (e.g., Diels-Alder addition), requiring a 10 MV/cm aligned with axis. Such large oriented EEF is challenging for large-scale implementation or material growth multiple axes steps. Here, we demonstrate that energy band at tip of individual single-walled carbon nanotube (SWCNT) can be spontaneously shifted high-permittivity environment, its other end contact low-work-function electrode hafnium carbide). By adjusting Fermi level point where there substantial disparity density states (DOS) between semiconducting (s-) metallic (m-) SWCNTs, achieve effective electrostatic 99.92% purity s-SWCNT narrow diameter (0.95 ± 0.04 nm), targeting requirement advanced SWCNT-based electronics future computing.