Open AccessThe nature of small molecules adsorbed on defective carbon nanotubes
Author(s) -
Danhui Li,
Fengting Wang,
Zhiyuan Zhang,
Wanrun Jiang,
Yu Zhu,
Zhigang Wang,
Fei Qi
Publication year - 2019
Publication title -
royal society open science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 51
ISSN - 2054-5703
DOI - 10.1098/rsos.190727
Subject(s) - carbon nanotube , nanotechnology , molecule , adsorption , materials science , carbon fibers , small molecule , chemical physics , chemistry , organic chemistry , composite material , composite number , biochemistry
In this work, we perform a comprehensive theoretical study on adsorption of representative 10-electron molecules H 2 O, CH 4 and NH 3 onto defective single-walled carbon nanotubes. Results of adsorption energy and charge transfer reveal the existence of both chemical adsorption (CA) and physical adsorption (PA). While PA processes are common for all molecules, CA could be further achieved by the polar molecule NH 3 , whose lone-pair electrons makes it easier to be bonded with the defective nanotube. Our systematic work could contribute to the understanding on intermolecular interactions and the design of future molecular detectors.